阳离子聚丙烯酰胺P(AM-DMC)的合成与表征

Synthesis and Characterization of Cationic Polyacrylamide P(AM-DMC)

以丙烯酰胺(AM)和甲基丙烯酰氧乙基三甲基氯化铵(DMC)为单体,通过水溶液聚合法合成了P(AM-DMC)。研究了不同引发体系对聚合反应的影响,探讨了络合剂、助溶剂及表面活性剂的种类和质量分数对产物特性黏数和溶解性的影响。得到的较佳工艺条件是:在氧化还原剂[(NH4)2S2O8,CH3NaO3S.2H2O]和偶氮类化合物组成的复合引发体系作用下(氧化还原剂总质量分数0.0150%,偶氮类化合物质量分数0.0125%),EDTA.2Na质量分数0.0002%,尿素质量分数0.005%,表面活性剂B质量分数0.05%,在上述条件下,所得产物的特性黏数为10.7 dL/g,溶解时间100 min。用红外光谱技术对聚合物的结构进行了表征。

Cationic polyacrylamide [P（AM-DMC）] was synthesized by aqueous copolymerization of acrylamide （AM） and methacryloyloxyethyltrimethyl ammonium chloride （DMC） using composite initiator system consisting of oxidant reductant E（ NH4 ）28208, CH3NaO3S· 2H2O] and azocompound. The influences of factors, such as initiator systems, concentrations and types of chelator, solubilizing agent and surfactant, on the intrinsic viscosity and solubility of obtained product were studied. The optimum reaction conditions are oxidant-reductant concentration 0.0150%, azocompound concentration 0. 0125 %, EDTA· 2Na concentration 0. 0002 %, urea concentration 0. 005 % and surfactant concentration 0.05 %. Under above conditions, the intrinsic viscosity of product is 10.7 dL/g and the dissolving time of product is 100 min. The structure of obtained product was characterized by FT-IR.