超支化聚酰胺胺(PAMAM)的阳离子改性及絮凝性能

摘要

Modified hyperbranched polyamidoamine(PAMAM) is used as a flocculant for waste water treatment,it was prepared by modification of its end groups with terminal cationic modified by using three kinds of cationic monomer in Michael addition. Impact of PAMAM modified reaction on the flocculation performance was analyzed with alkaline-surfactant-polymer (ASP)flooding fields simulated wastewater,and the modified structure of the product was characterized by IR. Experiment results showed that the preferred cationic monomer was methacryloyloxyethyl trimethyl ammonium chloride (DMC) ,the reaction was carried out at 660 ℃ for 36 h,m(DMC) ∶ m(PAMAM)=1. 2 ∶ 1,under the optimum condition,the flocculanting properties of the obtained product(PAMAM-DMC)was best.%采用3种阳离子单体,通过Michael加成反应,分别对超支化聚酰胺胺(PAMAM)进行了端基阳离子改性,改性产物作为絮凝剂用于处理油田污水.使用模拟三元复合驱油田污水,研究了PAM-AM改性反应条件对产物絮凝性能的影响,并对改性产物结构进行了红外表征.实验表明,优选阳离子单体甲基丙烯酰氧乙基三甲基氯化铵(DMC),反应温度60℃,时间36h,m(DMC):m(PAMAM)=1.2:1,在此条件下所得产物PAMAM-DMC的絮凝性能最佳.