丙烯酰胺水溶液聚合──添加Na_2CO_3制取高分子量阴离子型速溶聚丙烯酰胺的研究  

AQUEOUS POLYMERIZATION OF ACRYLAMIDE THE PREPARATION OF WATER-SOLUBLE POLYACRYLAMIDE WYIH HIGH MOLECULAR WEIGHT USING Na_2CO_3

作　　者：季鸿渐[1] 孙占维[1] 张万喜[1] 李志宏[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《高分子学报》1994年第5期559-564,共6页Acta Polymerica Sinica

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.

关 键 词：聚丙烯酰胺 碳酸钠 水溶液聚合 

分 类 号：O633.22[理学—高分子化学]