PPS/PET 및 PPS/PA66 블렌드에 대한 상용화제의 영향

초록

Two commercial compatibilizers of ethylene glycidyl methacrylate (EGMA) and styrene-b-ethylene/butylene-b-styrene grafted with maleic anhydride (SEBS-g-MA) with various amounts were added to poly(phenylene sulfide) (PPS)/poly(ethylene terephthalate) (PET) (80/20, weight ratio) and PPS/polyamide 66 (PA66) (80/20, weight ratio) mixture, respectively, using a twin screw extruder via a melt blending method and the blends of three components were melt-pressed and quenched to films of 200 μm. Changes in thermal, mechanical, chemical, and morphological properties of the blend films were analyzed by using DSC, DMA, WAXS, SEM, and UTM. DSC results showed that EGMA in PPS(80)/PET(20)/EGMA blends lowered Tg of PPS and hindered the crystallization of both PPS and PET. Although the addition of EGMA imparted partial miscibility to the immiscible PPS(80)/PET(20) blends, the total miscibility and compatibility were not enhanced. Mechanical and chemical properties of PPS80/PET20/EGMA blend films deteriorated more with increasing EGMA content. SEBS-g-MA did not work as a compatibilizer at all for PPS(80)/PA66(20) blends; it rather enduced phase separation of the blends.

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