摘要
采用反相悬浮聚合（ＩＳＰ）方法合成了分子量（Ｍ＿ｗ）大于１０￣７、速溶型粉状聚丙烯酰胺（ＰＡＭ）。研究了反应体系的特征及影响分子量的基本因素，诸如温度、单体浓度、引发剂浓度、乳化剂浓度、水相和油相的体积比（Ｖ＿ｗ／Ｖ＿０）和添加盐浓度对分子量的影响。用测电导的方法证明了反应过程中相反转的存在。发现甲酸钠是一种优良的链转移剂。研究了转化率与时间的关系。
Rapidly dissolving powdery polyacrylamide with molecular weight higher than l0￣7 hasbeen prepared by inverse suspension polymerization (ISP).Factors which influence themolecular weight,such as temperature,monomer concentration,initiator concentration,emulsifier concentration,water to oil ratio,and the molar ratio of additives,have beenstudied.Phase inversion during the polymerization process has been confirmed by conductivitymeasurement.It is discovered that sodium formate is a good transfer agent for the system.
出处
《石油化工》
EI
CAS
CSCD
北大核心
1994年第10期641-646,共6页
Petrochemical Technology
基金
湖北省自然科学基金
关键词
丙烯酰胺
反相悬浮聚合
超高分子量
悬浮聚合
acrylamide,inverse slispension polymerization,ultra-bigh molecular weight,conductivity measurement
