Poly Phenylene Sulfide Based Blends

The one engineering thermoplastic for which only limited blend activity has been reported involves poly(oxymethylene)(POM) (commercial since the 1960s). POM blends with phenoxy (PHE) were noted to be immiscible but exhibited good mechanical compatibility [523]. The miscibility of PHE with the next member of the poly(alkylene oxide) series (poly(ethylene oxide)) has been well noted. POM blends with the miscible PS/PPO blend showed decreasing crystallinity with a shift from bulk to homogeneous crystallization [524]. 

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Common conductive polymers are poly acetylene, polyphenylene, poly-(phenylene sulfide), polypyrrole, and polyvinylcarba2ole (123) (see Electrically conductive polymers). A static-dissipative polymer based on a polyether copolymer has been aimounced (124). In general, electroconductive polymers have proven to be expensive and difficult to process. In most cases they are blended with another polymer to improve the processibiUty. Conductive polymers have met with limited commercial success. 

Over the past 20 years a considerable chemical research effort was devoted to developing new high temperature polymers. It is interesting to note that some of these materials are now finding new applications and solutions to old problems of processing through blending. A commercial series of products trade-named Tribolon XT has been announced which are based on an aromatic polymide (Upjohn s 2080) with Phillips poly(phenylene sulfide), trade-named Ryton. A recent publication (88) describes some of the unique characteristics of this new family of materials. 

Wu, D., Wu, L., Zhang, M., Zhou, W., and Zhang, Y. 2008. Morphology evolution of nanocomposites based on poly(phenylene sulfide)/poly(butylene terephthalate) blend. 

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