Phase behavior of polystyrene/poly(phenylene oxide) (PS/PPO)?

28 October 2017 1 2K Report

PS and PPO blend, is a foreknown example of miscible blends which shows miscibility at the normal range of processing temperatures. However, it is not possible to find any report on the phase diagram of this blend. Does it have a LCST type of behavior? or it degradate before entering into the phase separation region?

Masoud Razavi

ANSWER: L. H. Sperling in his book "Polymeric Multicomponent Materials" states that this blend in principle should show a LCST behavior, however it thermally degrade prior to entering the phase-separated region.

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