AM/AMPS二元聚合物的合成及絮凝性能评价

Synthesis and flocculation performance evaluation of AM/AMPS binary polymer

以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)和丙烯酰胺(AM)为单体,制备了一种水溶性的AM/AMPS共聚物,对合成条件进行了分析,探讨了单体比例、引发剂、温度等因素对聚合物絮凝特性的影响,确立其最佳合成条件。研究发现合成反应温度45℃,反应时间7h,AMPS与AM质量比3∶7,引发剂过硫酸铵质量分数0.02%,溶液pH值6～8,该共聚物对污水的絮凝效果理想,显示出良好的耐盐抗温能力。

With 2-acrylamido-2-methylpropane sulfonic acid （AMPS） and acrylamide （AM） as raw materials, a water-soluble AM/AMPS copolymer is prepared. The factors effecting flocculation, such as the ratio of monomers, the amount of initiator, reaction temperature and reaction time have been investigated to obtain optimal polymerization condition. The optimal synthetic condition to flocculation is that reaction time is 7 h, m（AM） ： m（AMPS）equals 7 ： 3, reaction temperature is 45°C, the mass fraction of the reaction initiator, i.e. ammonium persulfate is 0. 02% and pH is 6 ～ 8. The results show that the copolymer flocculant has good performance in resisting heat and salt.