Miscibility of poly(chloromethyl methacrylate) with bisphenol-A polycarbonate

Abstract

Poly(methyl methacrylate) (PMMA) and bisphenol-A polycarbonate (PC) are important commercial polymers. PMMA/PC blends were once considered as immiscible blends. However, recent studies have shown that the miscibility of PMMA/PC blends depends on the method of preparation. Chiou and co-workers reported that PMMA/PC blends prepared by solution casting and melt mixing were immiscible while blends prepared by precipitation from solution using n-heptane as nonsolvent were miscible over the whole composition range. Kyu and Salhanda reported that PMMA/PC blends cast from tetrahydrofuran (THF) at room temperature were immiscible but those cast from THF at temperatures above 47°C were miscible. In this communication, we report the miscibility of poly(chloromethyl methacrylate) (PCMMA) with PC. It will be shown that the miscibility behavior of PCMMA/PC blends is similar to that of PMMA/PC blends.