采用新型引发剂乳液聚合法合成高相对分子质量聚乙烯醇  

Synthesis of High Molecular Weight Poly(vinyl alcohol) by Emulsion Polymerization using a Novel Initiator

作　　者：罗小砚[1] 张巧玲[1] 谢龙[1] 梁亚琴[1] 程原[1] 

机构地区：[1]中北大学化学工程系,太原030051

出　　处：《化学通报》2006年第8期606-610,共5页Chemistry

摘　　要：采用新型引发剂偶氮二异（N-胺乙基）丁脒（ABEA）对醋酸乙烯酯的低温乳液聚合进行了研究。通过正交试验得出了高相对分子质量聚醋酸乙烯酯的最佳工艺配方。讨论了引发剂浓度、反应温度和乳化剂浓度对聚合物相对分子质量和转化率的影响。对高相对分子质量聚醋酸乙烯酯醇解工艺进行了探讨，并获得了聚合度为3500～4050的聚乙烯醇。Poly （vinyl acetate） was synthesized by emulsion polymerization using ABEA as initiator at lower temperature. The optimal technological parameters were obtained by orthogonal experiments. The effects of concentration of initiator and emulsifier, temperature of polymerization on the degree of polymerization and conversion of monomer were investigated. Meanwhile, poly （vinyl alcohol） with 3500～4000 degree of polymerization was obtained by saponification of high molecular weight poly（vinyl acetate）.

关 键 词：聚乙烯醇 聚醋酸乙烯酯 高相对分子质量 低温乳液聚合 

分 类 号：TQ316.334[化学工程—高聚物工业]