Miscibility of poly(tetrahydropyranyl-2-methacrylate) and poly(cyclohexyl methacrylate) with styrenic polymers

Abstract

The glass transition behaviour for blends of poly(tetrahydropyranyl-2-methacrylate) (PTHPMA) with poly(α-methylstyrene) (PαMS), polystyrene (PS) and poly(p-methylstyrene) (PpMS) has been studied by differential scanning calorimetry. The results indicate that PTHPMA/PαMS blends are fully miscible, whereas PTHPMA/PpMS blends are immiscible. The miscibility of PTHPMA/PS blends depends on their compositions. Lower critical solution temperature (LCST) behaviour was observed for all the miscible blends containing PTHPMA. Poly(cyclohexyl methyacrylate) was found to be miscible with PS, PαMS and PpMS, and none of the blends showed LCST behaviour. © 1991.