环境工程学报2012，Vol.6Issue(4)：1075-1080,6.
高分子量高纯度阳离子聚丙烯酰胺的合成
Synthesis of a cationic polyacrylamide with high molecular weight and high purity
摘要
Abstract
In this research,a cationic polyacrylamide（CPAM） with high molecular weight and high purity was synthesized though aqueous copolymerization of acrylamide with acryloyloxyethyltrimethyl ammonium chloride,and the composite initiators were used to accelerate the polymerization.The experimental results showed that the molecular weight of CPAM with a high solubility in the range of 10.42 million was achieved when azo initiator（A） dosage was 0.5‰,redox initiator dosage was 0.45‰,the reducer/oxidizer molar ratio was 2∶ 1,reaction time was 5 h,and pH was 4.In addition,some parameters affecting residual monomer concentration such as additive concentration and reaction time were examined.The results indicated that additives（EDTA and solubilizer D） had no significant influence on the concentration of the residual AM monomer but sodium benzoate exhibited a remarkable effect on the AM concentration.Consequently,when prolonging the reaction time to 7 hours,the residual monomer concentration would be reduced to 0.27%,and a high purity CPAM was obtained.By compared with three same type products made at home and abroad,it showed that the molecular weight of CPAM was significantly higher than other products,and the residual content of AM was lower than domestic products,with a single reduction of 50%~75%.关键词
聚丙烯酰胺/阳离子/高纯度/高分子量/残单量Key words
polyacrylamide/cation/high purity/high molecular weight/level of residue of monomer分类
资源环境引用本文复制引用
郑怀礼,尤艳飞,邓晓莉,郑美珍,朱国成,相欣奕,蒋绍阶..高分子量高纯度阳离子聚丙烯酰胺的合成[J].环境工程学报,2012,6(4):1075-1080,6.基金项目
基金项目：国家自然科学基金资助项目 （）
国家水体污染控制与治理科技重大专项 （）
