甲基丙烯酸缩水甘油酯-苯乙烯多单体熔融接枝微孔聚丙烯  

STUDY ON St-ASSISTED MELT FREE-RADICAL GRAFTING OF GMA ONTO POLYPROPYLENE

作　　者：柯华[1] 谢续明[1] 

机构地区：[1]清华大学化工系高分子研究所,北京100084

出　　处：《高分子材料科学与工程》2003年第5期216-218,223,共4页Polymer Materials Science & Engineering

基　　金：聚合物成型装备国家工程研究中心科学与技术基金资助项目(99-001)

摘　　要：用单螺杆挤出机研究了甲基丙烯酸缩水甘油酯(GMA)-苯乙烯(St)多组分单体熔融接枝微孔聚丙烯(PP)体系。研究表明,以微孔型PP做接枝基体吸收接枝单体,能够大幅度提高单体的接枝率。当GMA和St的物质的量比约为16∶8时,所得接枝物的接枝率最高,而此时接枝产物的熔体流动速率最小。二者有良好的对应关系。体系中所采用的PP具有特殊的微孔结构,使得单体接枝率获得极大提高。此外还探讨了单体用量比、温度和引发剂用量等因素对反应的影响。Free radical meltgrafting of the multimonomer system for glycidyl methacrylate(GMA)/Styrene(St) onto polypropylene(PP) has been studied by means of a singlescrew extruder. The porous PP pellets were used for absorbing a large amount of monomers to highly increase the grafting yield in melt grafting process. The maximum GMA grafting degree was attained when the molar ratio of GMA to St was approximately 16∶8, and MFR of the grafted PP was the lowest at this ratio. The Influences of the molar ratio of GMA to St, the reaction temperature, and the amount of the peroxide on the grafting yield were also studied.

关 键 词：甲基丙烯酸缩水甘油酯 苯乙烯 多单体 熔融接枝 微孔聚丙烯 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]