| 两性聚丙烯酰胺的制备及其絮凝性能研究 |
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| 引用本文： | 刘中卫,熊蓉春,魏刚.两性聚丙烯酰胺的制备及其絮凝性能研究[J].北京化工大学学报(自然科学版),2008,35(6):45-48. |
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| 作者姓名： | 刘中卫 熊蓉春 魏刚 |
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| 作者单位： | 北京化工大学材料科学与工程学院,北京,100029;北京化工大学材料科学与工程学院,北京,100029;北京化工大学材料科学与工程学院,北京,100029 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 针对两性聚丙烯酰胺制备过程中极易发生的阴离子和阳离子不相容问题，利用阴离子型聚丙烯酰胺进行曼尼奇反应，再对其进行季胺化，制备了两性聚丙烯酰胺，发现碳酸二甲酯具有最好的季胺化效果。当聚丙烯酰胺、甲醛和二甲胺的反应物质的量比为1∶1.1∶1.2，反应温度为45℃，反应时间为4h，最后用碳酸二甲酯季胺化，所得两性聚丙烯酰胺絮凝性能最佳。
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| 关 键 词： | 两性聚丙烯酰胺 絮凝剂 曼尼奇反应 |
| 收稿时间： | 2008-04-08 |
Synthesis and flocculation properties of amphoteric polyacrylamide |
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| LIU ZhongWei,XIONG RongChun,WEI Gang.Synthesis and flocculation properties of amphoteric polyacrylamide[J].Journal of Beijing University of Chemical Technology,2008,35(6):45-48. |
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| Authors: | LIU ZhongWei XIONG RongChun WEI Gang |
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| Institution: | College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | In view of the problem of incompatibility between anions and cations in copolymerization reactions, an amphoteric polyacrylamide was synthesized from an anionic polyacrylamide by the Mannich reaction and quaternized with dimethyl carbonate. The optimum conditions for flocculation were found to be as follows: the molar ratio between polyacrylamide, formaldehyde and dimethylamine was 1∶1.1∶1.2; T=45?℃；and t=4h in the Mannich reaction, followed by quaternization by dimethyl carbonate. |
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| Keywords: | amphoteric polyacrylamide flocculants Mannich reaction |
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