VAc-EA-St三元乳液共聚合转化率研究  

Study on Conversion Rate of VAc-EA-St Emulsion Copolymerization

作　　者：曹志峰[1,2] 苗青[1,2] 张彪[1,2] 金勇[1] 

机构地区：[1]中科院成都有机化学研究所,四川成都610041 [2]中国科学院研究生院,北京100039

出　　处：《皮革科学与工程》2009年第4期10-14,共5页Leather Science and Engineering

基　　金：浙江省嘉兴市科技攻关项目(2007A22018)

摘　　要：以醋酸乙烯酯(VAc)、苯乙烯(St)和丙烯酸乙酯(EA)为单体,十二烷基硫酸钠(K-12)和烷基酚聚氧乙烯醚(OP-10)为复合乳化剂,过硫酸钾(KPS)为引发剂,通过普通无规乳液共聚和核壳乳液聚合方法合成了窄分散的三元共聚物乳液。对普通无规乳液共聚中丙烯酸乙酯单体加入量和核壳乳液聚合中不同投料顺序对单体转化率的影响进行了研究。结果表明:三元无规乳液共聚中,转化率随着丙烯酸乙酯单体加入量的增加而增大;核壳乳液聚合中,以醋酸乙烯酯均聚物和P(VAc-EA)共聚物为核的核壳乳液聚合,转化率高于以苯乙烯均聚物或P(S-EA)共聚物为核的核壳乳液聚合。The narrow distribution terpolymer latices were synthesized by emulsion copolymerization with VAc, St and EA as comonomers, K-12 and OP-10. as emulsifiers, KPS as initiator. The influences of some factors on conversion such as the content of EA on random emulsion copolymerization and different polymers as core on core-shell emulsion polymerization were studied. The results showed that the conversion of random emulsion copolymerization increased with an increase in the content of EA; the conversion of core-shell emulsion polymerization used PVAc or P（VAc-EA） as core was higher than that which used PS or P（S-EA ） as core.

关 键 词：醋酸乙烯酯 苯乙烯 丙烯酸乙酯 乳液共聚 转化率 

分 类 号：TQ316.334[化学工程—高聚物工业]