聚二甲基二烯丙基氯化铵的合成及絮凝性能研究

Study on the Synthesis and Flocculation Properties of Poly-dimethyldiallylammonium Chloride

通过水溶液聚合,选择浓度为65%的二甲基二烯丙基氯化铵为反应单体,过硫酸铵为引发剂,乙二胺四乙酸二钠为助剂,合成了絮凝剂聚二甲基二烯丙基氯化铵。通过正交试验确定了合成的最佳条件并评价了合成产品的性能。研究结果表明,合成聚二甲基二烯丙基氯化铵各因素的最佳水平依次为反应温度为80℃,过硫酸铵用量为1·6%,乙二胺四乙酸二钠用量为0·12%,反应时间为8h,引发剂用水量为9ml,所得到的絮凝剂的除浊率可以达到94·4%。并初步讨论了合成产品PDMDAAC与无机絮凝剂复配以及复合的絮凝效果,取得较满意的效果。

Dimethyldiallylammonium chloride(with mass fraction of 65%)is chosen as the monomer, ammonium peroxydisulfate as the initiating agent, disodium ethylene diamine tetraacetate as the addi- tion agent,poly-dimethyldiallylammonium chloride is synthesized through aqueous solution polymeri- zation.The orthogonal experiment is made.The results indicates that the reaction temperature is 80℃,the dosage of ammonium peroxydisulfate is 1.6%,the disage of disodium ethylene diamine tet- raacetate is 0.12%,the reaction time is 8h,water consumption of initiator is 9 ml,the removal rate of turbidity may achieve 94.9 %. the compound and complex flocculation effect of PDMDAAC and the inorganic flocculant are discussed,satisfied effect is obtained.