第 45 卷第 3 期Vol. 45 No. 3
2015 年 6 月Jun 2015

所属栏目:安全与环保

聚二甲基二烯丙基氯化铵的合成及其絮凝性能研究
李佼佼,胡琼璨,张伟锋,宁静恒* (长沙理工大学 化学与生物工程学院,湖南 长沙 410110)
摘 要:以二甲基二烯丙基氯化铵(DMDAAC)单体浓度为65%、硫酸铵(APS)与DMDAAC质量比为0.35%、乙二胺四乙酸二钠与DMDAAC质量比为0.0035%三阶段升温制备聚二甲基二烯丙基氯化铵(PDMDAAC)。第一阶段反应2 h,第二阶段和第三阶均反应3 h,并将温度依次设定为46.0、55.5、67.0℃,得到的PDMDAAC特性粘度可达2.78 dL/g。并用其进行混凝实验,在投加量为3 mg/L、pH=7、混凝温度50℃、静置10 min的条件下,PDMDAAC的透过率最佳,其与原水样比值可达到9.5∶1.0,呈现良好的絮凝效果。
关键词:聚二甲基二烯丙基氯化铵;合成;絮凝
中图分类号:TQ31  文献标识码:A  文章编号:1009-9212(2015)03-0070-03
Synthesis and Flocculational Performance of Polydimethyldiallylammonium Chloride
LI Jiao-jiao, HU Qiong-can, ZHANG Wei-feng, NING Jing-heng* (School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410110, China)
Abstract:Polydimethyldiallylammonium chloride(PDMDAAC)was prepared by a 3-stage method. This 3-stage method included a first-stage reaction of 2 h at 46.0℃, a second stage reaction of 3 h at 55.5℃, and a third stage reaction of 3 h at 67.0℃. The weight ratio of chemicals in the reaction was as follows: m(APS)∶m(DMDAAC)=0.35%; m(Na2EDTA)∶m(DMDAAC)=0.0035%. The intrinsic viscosity of the obtained typical product (PDMDAAC) could reach 2.78 DL/g. The flocculational performance testing results of PDMDAAC showed a good flocculational performance with a best permeability rate, and the ratio of the permeability rate was obtained in the presence/absence of PDMDAAC was 9.5∶1.0 at a loading of 3 mg/L, a pH of 7, and a temperature of 50℃, standing time of 10 min.
Key words:polydimethyldiallyammonium chloride; synthesis; flocculation
基金项目: 智能活性包装材料合成及其在水产品保鲜中的应用,湖南省水生资源食品加工工程实验室开放基金资助(2015GCZX04)。
作者简介:李佼佼(1989-),女,吉林白山人,硕士研究生,研究方向:功能材料。
联 系 人: 宁静恒,副教授,研究方向:有机功能材料。
收稿日期: 2015-05-1