全文下载：2012040368
翟新， 刘福胜*， 于世涛
(青岛科技大学 化工学院，山东 青岛 266042)
摘要： 以丙烯酸和氢氧化钠为原料，过硫酸铵、亚硫酸氢钠和V-50为引发剂，采用光辅助引发聚合法对聚丙烯酸钠的制备进行了研究。考察了各引发剂配比、pH值、反应温度等对聚合结果的影响，得到的较佳反应条件为：pH=7， (NH4)2S2O8 与NaHSO3质量分数总和为0.075%，V-50质量分数0.02%， m((NH4)2S2O8)∶m(NaHSO3)=2∶1，反应温度20 ℃，单体质量分数35%。在上述较佳条件下，产物的相对分子质量可达1 340万，溶解时间26 min。
关键词: 聚丙烯酸钠； 丙烯酸； 光辅助引发
中图分类号： TQ 314 253 文献标志码： A
收稿日期：2011-12-21
作者简介： 翟新（1984—），男，硕士研究生.*通信联系人.
Preparation of Sodium Polyacrylate with Higher Molecular Weight Assisted by Photo-initiation
ZHAI Xin, LIU Fu-sheng，YU Shi-tao
(College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: Sodium polyacrylate was prepared using acrylic acid and sodium hydroxide as raw materials, and ammonium persulfate/sodium hydrogen sulfite/V-50 as initiator by assistance of photo-initiation. The effects of initiator dosage, pH, monomer concentration and reaction temperature on polymerization results were examined. The obtained optimum conditions were pH=7, V-50 concentration 0.02%, ammonium persulfate concentration and sodium hydrogen sulfite concentration 0.075%, m(ammonium persulfate)∶m(sodium hydrogen sulfite)=2∶1, reaction temperature 20 ℃ and monomer concentration 35%. Under above conditions, the molecular weight of product was 1.34×107 and the dissolving time was 26 min.
Key words:sodium polyacrylate; acrylic acid; assisted by photo-initiation
