PP接枝聚合物对PP/PS共混物相形态的影响  

Effect of PP graft copolymer on phase morphology of PP/PS blending system

作　　者：王红英[1,2] 郑刚[1] 郭存悦[2] 

机构地区：[1]中国石油化工股份有限公司北京化工研究院,北京100013 [2]中国科学院化学研究所,北京100190

出　　处：《合成树脂及塑料》2009年第3期5-7,16,共4页China Synthetic Resin and Plastics

摘　　要：通过原子转移自由基反应合成了聚丙烯(PP)接枝聚苯乙烯(PS)(PP-g-PS),研究了PP-g-PS对PP/PS共混物相形态的影响。采用扫描电子显微镜、偏光显微镜观察了共混物的断面形貌和等温结晶形态。结果表明:加入PP-g-PS对PP/PS共混物起到了良好的增容作用,表现在两相界面模糊,分散相尺寸减小,当PP-g-PS中x(PS)为5.10%左右时即可起到增容改善相界面的作用。相容性的提高改善了PP/PS共混物的发泡性能。The authors studied the effect of polypropylene-graft-polystyrene （PP-g-PS） prepared by atom transfer radical polymerization on phase morphology of PP/PS blends. The cross-section and isothermal crystallization of PP/PS blends were observed by means of scanning electron microscope （SEM） and polarizing light microscope （POM）, respectively. The results indicate that PP-g-PS is an effective eompatibilizer for PP/PS blending system, which leads to blur phase interface and smaller disperse phase size. In this study, the phase morphology of PP/PS blends can be improved when the PS molar content of PP-g-PS is 5.10%. Furthermore, the increased interracial compatibility significantly improves the foaming behavior of PP/PS blends.

关 键 词：聚丙烯 聚苯乙烯 增容剂 共混 相形态 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]