两性聚丙烯酰胺的制备及表征  

Research on the Preparation and Characterization of Amphoteric Polyacrylamide

作　　者：唐黎[1] 马邕文[1,2] 

机构地区：[1]华南理工大学环境科学与工程学院,广东广州510006 [2]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《造纸科学与技术》2013年第1期51-55,共5页Paper Science & Technology

基　　金：广东省科技计划项目(编号2010B010900026)

摘　　要：研究了反相微乳液法聚合制备两性聚丙烯酰胺的影响因素。通过正交实验对两性聚丙烯酰胺反相微乳液聚合的条件进行了优化选择,得出了制备两性聚丙烯酰胺的最佳工艺条件:单体水溶液的pH值为5,反应温度40℃,反应时间4h,引发剂质量百分数为0.4%(相对于水溶液质量),氧化剂与还原剂的质量比为1∶1。在此条件下合成的微乳液体系中各种粒子的平均粒径为73nm,分子量达40万。并用红外光谱(FT-IR)、热失重分析仪(TGA)对两性聚丙烯酰胺共聚物的结构及热稳定性进行了表征。The impact factors of amphoteric polyacrylamide preparation by inverse microemulsion were studied in this paper. The conditions of amphoteric polyacrylamide preparation by means of orthogonal experimental design were optimized. The optimal conditions of orthogonal experiment were as follows ： pH 4, reaction temperature 40℃ , reaction time 4h, the concentration of initiator 0.4% , the ratio of oxidant to reductant 1 ： 1. Under these conditions, molecular weight of 40.05 × 104 of 74 nm particles was synthesized. The structure and thermal stability of the amphoterie poly aerylamide were characterized by Fourier transform infrared spectroscopy（ FT -IR） and Thermogravi- metric analysis （TGA）.

关 键 词：两性聚丙烯酰胺 影响因素 反相微乳液 结构表征 

分 类 号：TS727.2[轻工技术与工程—制浆造纸工程]