橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2008 Vol.31 No.6 P.436-440

橡胶技术网

乙烯-辛烯共聚物接枝苯乙烯-丙烯腈共聚物的合成及其表征

李银环  王炼石  代惊奇  张安强 

摘 要:用苯乙烯(St)、丙烯腈(AN)2种单体和乙烯一辛烯共聚物(POE)进行溶液接枝共聚合反应,制备了乙烯-辛烯共聚物接枝苯乙烯-丙烯腈共聚物(POE-g-SAN),探讨了接枝共聚反应条件,并对POE-g-SAN进行了表征.结果表明,接枝共聚反应的接枝率(GR)和接枝效率(GE)均随着St/AN(质量比)的减小而稍有增大,当POE/St-AN(质量比)为50/50时,GR与GE达到最大值;增加BPO用量有利于接枝反应;当反应物POE与St-AN在甲苯中的质量分数为27.5%时,GR与GE达到最大值;在反应前10 h,随着反应时间的延长,GR增大,GE在4 h时达到最大值77.8%,在反应10 h后,接枝反应几乎不再进行;在POE与St-AN接枝共聚反应中,POE已接枝了SAN支链,且GR越大,SAN支链越多;POE-g-SAN有2个玻璃化转变温度(Tg),约为-50℃和110℃;随着GR的增大,POE-g-SAN中POE相的Tg升高,熔融温度和熔融热均降低;随着共单体中AN配比量的增加,POE-g-SAN中SAN相的Tg升高.
关键词:乙烯-辛烯共聚物;苯乙烯-丙烯腈共聚物;溶液接枝共聚合;接枝率;微观结构;热性能
分类号:TQ316.343  文献标识码:A

文章编号:1000-1255(2008)06-0436-05

Synthesis and characterization of polyethylene-octene copolymer grafting styrene-acrylonitrile copolymer

Li Yinhuan  Wang Lianshi  Dai Jingqi  Zhang Anqiang 

作者简介:李银环(1978-),女,博士研究生.已发表论文2篇;
作者单位:李银环(华南理工大学材料科学与工程学院,广东,广州,510640) 
     王炼石(华南理工大学材料科学与工程学院,广东,广州,510640) 
     代惊奇(华南理工大学材料科学与工程学院,广东,广州,510640) 
     张安强(华南理工大学材料科学与工程学院,广东,广州,510640) 

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收稿日期:2007年7月3日

修稿日期:2008年7月22日

出版日期:2008年11月15日

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