摘要
考察了3种引发体系[过硫酸铵-碳酸氢钠(I1),偶氮二异丁腈(I2),过氧化氢-抗坏血酸(I3)]对聚醋酸乙烯酯微乳液聚合的影响。结果表明:I2使微乳液聚合体系反应剧烈;I3反应较为平稳;I1的表现中等。I1~I3所制得的乳液分子量出现典型的双峰分布。在高分子量部分,I3对应的聚合物分子量较高;在低分子量部分,I1~I3差别不大;I2对应的乳胶粒径较小,分布也较窄;I3次之;I1对应的乳胶粒径较大,分布也较宽。
Effects of initiation systems[ ammonium persulfate-sodium hydrogen carbonate( I1 ), azodiisobutyronitrile( I2 ) and peroxide-aseorbie acid ( I3 ) ] on mieroemulsion polymerization of poly ( vinyl acetate) were investigated. Experimental results showed that extent of the polymerization exihibited was I3 〉 I1 〉 I2 and the effect on the particle size of latex and distributions were I1 〉 I3 〉 I2.
出处
《合成化学》
CAS
CSCD
2008年第2期173-175,182,共4页
Chinese Journal of Synthetic Chemistry
关键词
聚醋酸乙烯酯
徽乳液聚合
引发剂
poly ( vinyl acetate)
mieroemulsion polymerization
initiator