N-cyclohexylmaleimide (CHMI) and styrene (St) were used to copolymerize wit
h methyl methacrylate (MMA) to synthesize heat-resistant poly(methyl methac
rylate) (PMMA) by a solution copolymerization method and a suspension copol
ymerization method. Residual CHMI concentrations in the copolymers were ana
lyzed by gas chromatography. Effects of styrene on residual CHMI concentrat
ion, glass transition temperature (T-g), molecular weight, and molecular we
ight distribution were studied. (C) 1999 John Wiley & Sons, Inc.