Preparation of novel membrane from dianhydride-modified polystyrene with controlled pore size on micro- and macrolevels

摘要

A technique has been developed to prepare crosslinked, porous membrane from a chemical modification of polystyrene. Polystyrene was chemically modified by crosslinking with pyromellitic dianhydride in nitrobenzene using a Friedel-Crafts acylation reaction in the presence of AlCl3 at 100 degrees C. Solid-state cross polarization/magic angle spinning NMR of powdered membrane was reported. TGA of the membrane was verified in air and in nitrogen. The morphologies of the membranes were analyzed. (C) 1998 John Wiley & Sons, Inc. [References: 10]