疏水缔合阳离子聚丙烯酰胺的合成与应用

采用水溶液自由基胶束聚合方式，使用氧化还原体系（K2S2O8-Na2S2O3）与热分解引发剂偶氮二异丁腈（AIBN）组成的复合引发体系引发聚合，得到有机高分子聚合物--丙烯酰胺-二甲基二烯丙基氯化铵-丙烯酸丁酯共聚物P(AM-DMDAAC-BA)；探讨了合成条件对聚合物性质的影响，并对聚合物的相关性质及结构进行了表征.实验结果表明，使用复合引发体系可以提高反应的转化率和聚合物的分子量.制备P(AM-DMDAAC-BA)的最佳条件为：复合引发体系中各物质的质量配比为m(Na2S2O3)∶m(K2S2O8)∶m(AIBN)=1.0∶2.0∶1.0，反应单体的物质的量配比为n(AM)∶n(DMDAAC)∶n(BA)=68.6∶29.4∶2.0，引发剂、表面活性剂、尿素分别占单体总质量的0.15%、2.0%、2.5%.IR光谱图证明AM、DMDAAC、BA三种单体已参加聚合反应.聚合物的絮凝效果表明，P(AM-DMDAAC-BA)对含油污水具有显著的除油效果.

Synthesis and application of hydrophobically associating cationic polyacrylamide

A series of hydrophobically associating cationic copolymers,poly(AM-DMDAAC-BA),were synthesized with acrylamide(AM),dimethyldiallyammonium chloride(DMDAAC) and butylacrylate(BA) by the micellar free radical copolymerization technique.Copolymerization was initiated by a complex initiation system,which was composed of a redox initiator(K2S2O8-Na2S2O3) and thermal decomposition initiator azobisisobutyronitrile(AIBN).The effects of synthesis conditions,such as various initiation systems,initiator concentration,...