疏水缔合阳离子聚丙烯酰胺的合成与应用

山东大学学报(工学版) ›› 2008, Vol. 38 ›› Issue (6): 99-104.

疏水缔合阳离子聚丙烯酰胺的合成与应用

李春晓岳钦艳卢磊高宝玉杨忠莲司晓慧倪寿清王元芳

山东大学环境科学与工程学院，山东济南 250100

收稿日期:2008-09-16 出版日期:2008-12-16 发布日期:2008-12-16
通讯作者: 岳钦艳（1958-），女，山东曹县人，教授，博士，研究方向为水污染控制和固体废物处理处置. E-mail:qyyue@sdu.edu.cn
作者简介:李春晓（1984-），男，山东济阳人，硕士研究生，研究方向为水污染控制. E-mail:chunxiao@mail.sdu.edu.cn

Synthesis and application of hydrophobically associating cationic polyacrylamide

School of Environmental Science and Engineering, Shandong University, Jinan 250100, China

Received:2008-09-16 Online:2008-12-16 Published:2008-12-16

摘要/Abstract

摘要：

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.

关键词: 疏水缔合；自由基胶束聚合；复合引发体系；丙烯酰胺；阳离子

Abstract:

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, monomer ratio, surfactant concentration and urea concentration on properties of polymers were studied. The results showed that conversion and molecular weight of polymer were increased with the use of the initiation system. The optimum conditions of copolymerization were as follows: the molar ratio of AM, DMDAAC and BA was 68.6∶29.4∶ 2.0, respectively and the percentages of initiator, surfactant and urea by weight in the monomers were 0.15%, 2.0% and 2.5%, respectively. Infrared spectrogram of the copolymers proved the formation of hydrophobically associating cationic copolymers. The results of coagulation performance experiments indicated that the oil removal rate was significantly improved by using P(AM-DMDAAC-BA).

Key words: hydrophobic associating； micellar free radical copolymerization； complex initiation system； acrylamide； cation

李春晓岳钦艳卢磊高宝玉杨忠莲司晓慧倪寿清王元芳. 疏水缔合阳离子聚丙烯酰胺的合成与应用[J]. 山东大学学报(工学版), 2008, 38(6): 99-104.

LI Chun-xiao， YUE Qin-yan， LU Lei， GAO Bao-yu， YANG Zhong-lian， SI Xiao-hui， NI Shou-qing， WANG Yuan-fang. Synthesis and application of hydrophobically associating cationic polyacrylamide [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2008, 38(6): 99-104.

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