摘要
本文建立了丙烯酰胺水溶液聚合的潜在型引发体系；研究了在碳酸盐法聚合体系中，添加不同量氨、尿素、ＥＤＴＡ—２Ｎａ，以及聚合体系ｐＨ、单体浓度、聚合水浴温度对聚合产物分子量及其溶解性能的影响规律和原因；解决了产物高分子量与产生不溶聚合物之间的矛盾；指出了获得高分子量阴离子型速溶粉末产品的关键．从而，用碳酸盐法得到了溶解性能优异的［η］高达２８ｄｌ／ｇ的胶体产品和［η］高达２２ｄｌ／ｇ的速溶粉末产品．
A new initiation system for aqueous polymerization of acrylamide is presented.The effects of the contents of ammonia, urea, EDTA--2Na, pH value, concentration of monomer, polymerisation temperature in a Na2CO3 polymerization sysytem on the molecular weight of polymer and water-- soluble property were studied. Amethod to obtain the product with high molecualar weight which easily is dissolvedin water was found. A product in the form of powder with [η] = 22dl/g was obtained by Na2CO3 method.
出处
《高分子学报》
CSCD
北大核心
1994年第5期559-564,共6页
Acta Polymerica Sinica
关键词
聚丙烯酰胺
碳酸钠
水溶液聚合
Polycrylamide
Water- soluble polyacrylamide
Aqueous polymerization
