【摘要】 采用大单体技术合成聚苯乙烯和丙烯酸丁酯的规整接枝共聚物PBA-g-PS。研究了共聚合反应条件:聚苯乙烯大单体的投料质量分数,引发剂用量,反应温度对接枝效率的影响;PBA-g-PS可以作为ACR/PS体系的共混增容剂,研究共混物的组成,接枝物的用量,接枝物的组成对共混物物理机械性能的影响。用SEM,DSC表征共混物的变化,结果表明,接枝共聚物确实能促进两组分相容,起到增容剂的作用。更多还原

【Abstract】 PBA-g-PS was synthesized via macromer techniques.Effect of polymerization conditions including charging weight ratio of polystyrene macromer,amount of initiator and temperature of copolymerization on grafting efficiency were studied.PBA-g-PS was used as compatibilizer in the blends of PS/ACR.Effects of composition of the blends,amount of the graft copolymer,and composition of the graft copolymer on mechanical properties were studied.The blends of PS/ACR were characterized with SEM and DSC.The results showed that the graft copolymers have the compatibilizing action on the blends.更多还原