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反相乳液聚合制备聚丙烯酸钠
引用本文:陈双玲,赵京波,刘涛,张兴英.反相乳液聚合制备聚丙烯酸钠[J].石油化工,2002,31(5):361-364.
作者姓名:陈双玲  赵京波  刘涛  张兴英
作者单位:北京化工大学,材料科学与工程学院,北京,100029
摘    要:采用反相乳液聚合法合成聚丙烯酸钠 ,研究了反应温度、引发剂用量、乳化剂用量及配比和单体中和度对产物相对分子质量的影响。结果表明 ,最佳的反应温度为 45℃ ,引发剂浓度为 4 0mmol/L ,乳化剂 (占油相 )质量分数为5 % ,单体中和度为 70 %。

关 键 词:反相乳液聚合  聚丙烯酸钠  絮凝剂
文章编号:1000-8144(2002)05-0361-04
修稿时间:2001年7月19日

Preparation of Poly(Sodium Acrylate) by Inverse Emulsion Polymerization
CHEN Shuang-ling,ZHAO Jing-bo,LIU Tao,ZHANG Xing-ying.Preparation of Poly(Sodium Acrylate) by Inverse Emulsion Polymerization[J].Petrochemical Technology,2002,31(5):361-364.
Authors:CHEN Shuang-ling  ZHAO Jing-bo  LIU Tao  ZHANG Xing-ying
Abstract:Poly (sodium acrylate) with high-molecular weight was synthesized with a redox initiator at 30~60 ℃ by inverse emulsion polymerization. The effects of reaction temperature, initiator concentration, molar ratio of oxidant to reductant, emulsifier concentration and weight ratio of compounding emulsifiers as well as acrylic acid neutralization on M w of poly(sodium acrylate) were studied. The results indicate the emulsification and stability of the reaction system are greatly influenced by the weight ratio of compounding emulsifiers and acrylic acid neutralization. The proper reaction temperature is 40~50 ℃. The proper reaction conditions are : initiator concentration , 4×10 -3 mol/L in water phase; molar ratio of oxidant to reductant, 2/1; emulsifier concentration, 5% by weight in total oil phase; hydrophile-lipophile balance(HLB) of compounding emulsifiers, less than 5.65 ; and acrylic acid neutralization, 70%.The M v of the obtained powdery poly (sodium acrylate) ranges from a few million to over ten millions, and the highest M v is up to 30 70 million.
Keywords:poly(sodiumacrylate)  inverse emulsion polymerization  flocculant  
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