摘要
文章以过硫酸铵为引发剂,采用溶液聚合制备低分子量聚丙烯酸,详细研究了聚合反应条件对聚丙烯酸分子量的影响.实验结果表明:引发剂用量4.5%,单体浓度25%,聚合反应温度70℃,聚合4h时,可以得到分子量为3000左右适用于超分散剂水溶剂链的聚丙烯酸.
In this paper, low molecular weight polyacrylic acid was prepared by solution polymerization in the presence of ammonium persulfate as initiator. The effects of polymerization conditions on the molecular weight of polyacrylic acid were investigated in detail. The results showed that the optimum conditions for proper molecular weight about 3 000 applicable to solution chain for hyperdispersant were as follows： the concentration of initiator was 4.5 %, the monomer concentration was 25 %, the polymerization temperature was 70℃, and the reaction time was 4 h.
出处
《南通大学学报（自然科学版）》
CAS
2008年第1期58-61,共4页
Journal of Nantong University(Natural Science Edition)
基金
南通大学自然科学基金项目(06Z022)
关键词
聚丙烯酸
超分散剂
低分子量
溶剂链
制备
polyacrylic acid
hyperdispersant
low molecular weight
solution chain
preparation
