INIQUI   05448
INSTITUTO DE INVESTIGACIONES PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Preparation of poli (vinylalcohol)/organoclay nanocomposites by casting and in situ polymerization
Autor/es:
M. C. CARRERA; E. ERDMANN; H. A. DESTÉFANIS
Lugar:
Venecia
Reunión:
Conferencia; ECCM15 - 15TH EUROPEAN CONFERENCE ON COMPOSITE MATERIALS; 2012
Institución organizadora:
ECCM 15
Resumen:
In this paper was studied the preparation of nanocomposite polyvinylalcohol (PVA)
/organophilic montmorillonite (MMTHDTMA), 5 wt %, obtained by two methods: the first in situ
polymerization and the second mixed by solution (casting). The polymerization in situ was
carried out by the addition of organophilic clay in the monomer (vinyl acetate, VA), using
benzoyl peroxide as initiator. Poly (vinyl acetate)/MMTHDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
polymerization and the second mixed by solution (casting). The polymerization in situ was
carried out by the addition of organophilic clay in the monomer (vinyl acetate, VA), using
benzoyl peroxide as initiator. Poly (vinyl acetate)/MMTHDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA), 5 wt %, obtained by two methods: the first in situ
polymerization and the second mixed by solution (casting). The polymerization in situ was
carried out by the addition of organophilic clay in the monomer (vinyl acetate, VA), using
benzoyl peroxide as initiator. Poly (vinyl acetate)/MMTHDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
/organophilic montmorillonite (MMTHDTMA), 5 wt %, obtained by two methods: the first in situ
polymerization and the second mixed by solution (casting). The polymerization in situ was
carried out by the addition of organophilic clay in the monomer (vinyl acetate, VA), using
benzoyl peroxide as initiator. Poly (vinyl acetate)/MMTHDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
polymerization and the second mixed by solution (casting). The polymerization in situ was
carried out by the addition of organophilic clay in the monomer (vinyl acetate, VA), using
benzoyl peroxide as initiator. Poly (vinyl acetate)/MMTHDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA), 5 wt %, obtained by two methods: the first in situ
polymerization and the second mixed by solution (casting). The polymerization in situ was
carried out by the addition of organophilic clay in the monomer (vinyl acetate, VA), using
benzoyl peroxide as initiator. Poly (vinyl acetate)/MMTHDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
In this paper was studied the preparation of nanocomposite polyvinylalcohol (PVA)
/organophilic montmorillonite (MMTHDTMA), 5 wt %, obtained by two methods: the first in situ
polymerization and the second mixed by solution (casting). The polymerization in situ was
carried out by the addition of organophilic clay in the monomer (vinyl acetate, VA), using
benzoyl peroxide as initiator. Poly (vinyl acetate)/MMTHDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
polymerization and the second mixed by solution (casting). The polymerization in situ was
carried out by the addition of organophilic clay in the monomer (vinyl acetate, VA), using
benzoyl peroxide as initiator. Poly (vinyl acetate)/MMTHDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA), 5 wt %, obtained by two methods: the first in situ
polymerization and the second mixed by solution (casting). The polymerization in situ was
carried out by the addition of organophilic clay in the monomer (vinyl acetate, VA), using
benzoyl peroxide as initiator. Poly (vinyl acetate)/MMTHDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA was obtained and then an
alcoholysis in an alkaline medium was made, to finally obtain the composite of
PVA/MMTHDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA (In situ polimerization). In the method of obtaining by mixing in solution
(casting) organophilic clay dissolved in water. Moreover, the PVA was obtained by hydrolysis
of polyvinyl acetate in alkaline medium. PVA was added to the dispersion of clay in water and
heated to 90 ° C until complete dissolution of polymer, the solutions were added in petri
plates and obtained PVA/MMTHDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).
HDTMA (casting) films. The composites were characterized by Xray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The thermal
properties were evaluated by thermogravimetric analysis (TG) and differential scanning
calorimetry (DSC).