星形聚丙烯酰胺絮凝剂的合成与表征  

SYNTHESIS AND CHARACTERIZATION OF STAR-POLYACRYLAMIDE FOR FLOCCULATING AGENTS

作　　者：钱锦文[1] 王猛[1] 杨鹜远[1] 

机构地区：[1]浙江大学高分子系,浙江杭州310027

出　　处：《高分子材料科学与工程》2003年第6期58-61,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金(50173034)资助项目

摘　　要：以高价铈盐(硝酸铈铵)和多羟基有机物(丙三醇、季戊四醇、蔗糖)组成的氧化还原引发体系为引发剂引发丙烯酰胺(AM)自由基聚合,采用1H-NMR和SEC方法对产物进行结构表征。结果表明,制备的聚丙烯酰胺(PAM)是星形聚丙烯酰胺(SPAM),并提出了由NMR和SEC谱图计算SPAM平均臂数的两种方法。同时实验还考察了引发剂组成和用量、还原剂种类,以及单体浓度对聚合反应的影响。Acrylamide polymerization was conducted using Ce^(4+) and multi-hydroxyl reducer(such as 1,2,3-propanetriol, pentaerythritol and sucrose) as initiator systems. Polyacrylamide synthesized were characterized by ()~1H-NMR and SEC, and star-structure was displayed. Meanwhiles two methods were proposed to estimate the average arm number of SPAM according to the results of ()~1H-NMR and SEC. The effects of reducer type, dosage and component of initiator and concentration of monomer on polymerization were investigated.

关 键 词：星形高分子 聚丙烯酰胺 絮凝剂 合成 表征 废水处理 

分 类 号：X703.5[环境科学与工程—环境工程]