Preparation of poli (vinylalcohol)/organoclay nanocomposites by casting and in situ polymerization

M. C. CARRERA; E. ERDMANN; H. A. DESTÉFANIS

Venecia

Conferencia; ECCM15 - 15TH EUROPEAN CONFERENCE ON COMPOSITE MATERIALS; 2012

ECCM 15

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).