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丙烯酸酯/双官能团共单体无皂乳液聚合的成粒机理
引用本文:张茂根,翁志学,黄志明,潘祖仁.丙烯酸酯/双官能团共单体无皂乳液聚合的成粒机理[J].南京师大学报,2000,23(2):55-59.
作者姓名:张茂根  翁志学  黄志明  潘祖仁
作者单位:[1]南京师范大学化学系 [2]浙江大学高分子科学与工程研究所
基金项目:江苏省教育委员会自然科学基金资助项目(98KJB18001)
摘    要:研究了少量聚乙二醇马来酸单酯钠盐(ZA-6)存在下,MMA/BA无皂乳液聚合成粒过程,发现聚合初期产生的初级粒子消失后,2次周期性地产生小粒子,经分析,是新的成核作用产生的,特称为周期成核现象,表明在聚合的中晚期,成核过程并未真正结束,百是处于成核一聚并的动态平衡之中。

关 键 词:无皂乳液聚合  成粒机理  丙烯酸酯  MMA/BA
修稿时间:1999-11-27

Study on Particle Formation Mechanism in the Emulsifier-Free Emulsion Polymerization of Acrylate/Comonomer with Double Functional Groups
ZHANG Mao-gen,WENG Zhi-xue,HUANG Zhi-ming,PAN Zu-ren.Study on Particle Formation Mechanism in the Emulsifier-Free Emulsion Polymerization of Acrylate/Comonomer with Double Functional Groups[J].Journal of Nanjing Normal University(Natural Science Edition),2000,23(2):55-59.
Authors:ZHANG Mao-gen  WENG Zhi-xue  HUANG Zhi-ming  PAN Zu-ren
Abstract:The particle formation mechanism of MMA/BA emulsifier free emulsion polymerization in the presence of small amount of ZA 6 comonomer (Sodium polyethylene glycol 600 maleate) was investigated with Coulter LS 230 laser particle size analyzer.After the primary particles of the early stage have vanished,new small particles were twice found periodically.It is believed to be formed by new nucleations by theoretical and data analyses. It is called periodic nucleation phenomenon. It is suggested that the nucleation processes do not end really at the middle and later stages of the polymerization,and it is in the dynamic equilibrium of nucleation and aggregation.
Keywords:emulsifier  fee emulsion polymerization  particle formation mechanism  periodic nucleation phenomenon
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