淀粉接枝两性离子絮凝剂的制备  

Synthesis of amphoteric copolymerric flocculant grafted on starch

作　　者：刘兆丽[1] 曹亚峰[1] 马希晨[1] 

机构地区：[1]大连轻工业学院化学工程系,辽宁大连116034

出　　处：《大连轻工业学院学报》2003年第1期50-52,共3页Journal of Dalian Institute of Light Industry

摘　　要：研究了两性单体的合成条件,以及以过硫酸铵为引发剂时,其与淀粉进行接枝共聚的规律。实验结果表明,当pH9～10,反应温度85℃,反应时间为5h时,两性单体收率最高,可达98%以上;当引发剂浓度为2.2mmol／L,单体用量(单体／淀粉)为1.8／1(质量分数),反应温度为48℃,反应时间为4h时,接枝共聚反应的G和GE均较高,且所得产品的特性粘数亦较大。This paper reports the investigation of the synthesis condition of amphoteric monomer and the rule of copolymerized grafting it on starch by using (NH4)2S2O8 as initiator. Experimental results indicate that the yield of amphoteric monomer is more than 98% under the condition: pH, 9～10;reaction temperature, 85?℃; reaction time, 5?h. The optimum variables of grafting ratio, grafting efficiency, and ［η］ of the copolymer are obtained at initiator concentration of 2.2?mmol/L,monomer dosage of 1.8/1(monomer/starch ),reaction temperature of 45?℃, and reaction time of 4?h.

关 键 词：淀粉 接枝共聚 两性单体 絮凝剂 制备 工艺条件 

分 类 号：TS236.9[轻工技术与工程—粮食、油脂及植物蛋白工程] TQ316.343[轻工技术与工程—食品科学与工程]