絮凝剂聚二甲基二烯丙基氯化铵的合成

Synthesis of Poly(dimethyldiallylammonium) for Flocculating Agent

二甲基二烯丙基氯化铵(DMDAAC)水溶液在过硫酸胺与亚硫酸氢钠组成的氧化还原引发体系中引发聚合。研究了不同引发剂及助剂作用下的聚合工艺条件,用印染废水验证聚合物的絮凝效果。数据表明:引发剂加入量以3 mg/L为佳;加入助剂能提高聚合产物分子量,添加量为0.35 mg/L。聚合反应时间约6 h;反应温度约60℃。聚合产物PDMDAAC在印染废水的絮凝实验中的最佳用量范围在35～45mg/L之间。

The polymerization of dimethyldiallylammonium chloride （DMDAAC） in aqueous medium was initiated by the oxidation-reduction initiator of Ammonium Persulfate-Sodium bisulfite. The effects of various experimental conditions on the superficial viscosity were studied, and the flocculation efficiencies of polymer were tested by using dyeing wastewater. The data showed that the optimal dosage of initiator was 3 mg/L, the higher molecular weight of polymer can be obtained by introducing an aid-initiator to the reaction system, which optimal dosage was 0,35 mg/L, and the polymerization reaction was controlled at the temperature 60℃ with reacting time 6h. The optimal dosage of polymer in floceulation exneriment of dyeing wastewater was taken of 35-45 mg/L.