Effect of copolymer composition on the miscibility of poly(styrene-co-acetoxystyrene) with phenolic resin

Abstract

The miscibility behavior and specific interaction of phenolic/polystyrene-co-acetoxystyrene, (PS-co-PAS) blends by varying acetoxystyrene contents of the PS-co-PAS copolymer were investigated by differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FT-IR). A miscibility window was found when the acetoxystyrene fraction in the copolymer is higher than 45 mol% in phenolic/PS-co-PAS = 50/50 blend system. Painter-Coleman Association Model (PCAM) is able to predict the miscibility window at 150 degreesC compared with our experimental results based on DSC analyses. (C) 2001 Elsevier Science Ltd. All rights reserved.