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; 15TH EUROPEAN CONFERENCE ON COMPOSITE MATERIALS; 2012
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 were
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 mixing in solution (casting) organophilic clay dissolved in water.
PVA was added to the dispersion of clay in water to 90°C and were obtained
PVA/MMTHDTMA films by casting. The composites were characterized by XRD
and FTIR. The thermal properties were evaluated by TGA and DSC.