Synthesis of poly(DOMA-co-AN) by addition of carbon dioxide to poIy(GMA-co-AN) and the miscibility behavior of its blends with PEI

摘要

Poly(glycidyl methacrylate-co-acrylonitrile)[poly(GMA-co-AN)] was converted to a poly[(2-oxo-1,3 dioxolane-4-yl) methyl methacrylate-co-acrylronitrile][poly(DOMA-co-AN)] by the polymer reaction with carbon dioxide using quaternary ammonium salt as a catalyst. Quaternary ammonium salts of lager alkyl group and more nucleophilic counter anions exhibited better catalytic activity in the addition of CO_2 to poly(GMA-co-AN). Poly(DOMA-co-AN) formed clear films when blended with polyetherimide (PEI). DSC analysis also showed that poly(DOMA-co-AN) containing blends were miscible in the whole composition ranges. The glass transition temperature (T_g) of the polymer blends closely matched the Fox equation.