Preparation and characterization of mix matrix membranes polymer based silane-trated clay reinforced polycarbonate nanocomposites.

G. FLORES; E. ERDMANN; M. TORO; C. PARANHOS; L. PESSAN; H. DESTÉFANIS

Venecia

Conferencia; ECCM15 - 15TH European Conference on Composite Materials; 2012

ECCM15 - 15TH European Conference on Composite Materials

In this work an argentinian sodium montmorillonite (MMT) was used as a starting materia. The first step was a cation exchange with hexadecyltrimethylammonium for obtain an organophilic clay. Then, this clay was mixed with dimethyldichlorosilane in a process involving the generation of the silane oligomers due to hydrolysis reaction and subsequent polymerization. Characterization of these clays by X-ray diffraction shows the intercalation of modifiers species. In adittion, the results of TGA show different profiles of thermal decomposition of clays. These additives were used to modify the structure of polymeric matrix of polycarbonate; the final materials were characterized by X-ray diffraction and thermal analysis; transport properties were evaluated by the pervaporation technique, using distilled water. The results show that the hydrophobic character of the silanized material affects the PC polymeric matrix by changing the molecular mobility of species, enabling their use in separation processes of alcohol-water mixtures.