阳离子型接枝淀粉絮凝性能研究  

Research on flocculation property of cationic grafted starch

作　　者：李海花[1,2] 高玉华 张利辉[1,2] 李娜 刘振法[1,2] Li Haihua;Gao Yuhua;Zhang Lihui;Li Na;Liu Zhenfa(Institute of Energy Resources,Hebei Academy of Sciences,Shijiazhuang 050081,China;Hebei Engineering Research Center for Water Saving in Industry,Shijiazhuang 050081,China;Hebei Sunwater Water Treatment Co.,Ltd.,Shijiazhuang 050081,China)

机构地区：[1]河北省科学院能源研究所,河北石家庄050081 [2]河北省工业节水工程技术研究中心,河北石家庄050081 [3]河北桑沃特水处理有限责任公司,河北石家庄050081

出　　处：《工业水处理》2019年第10期49-53,共5页Industrial Water Treatment

基　　金：国家自然科学基金项目(21376062);河北省基础研究计划项目(18964005D);石家庄市科学技术研究与发展计划项目(171071153A);河北省科学院科技计划项目(18701,18704)

摘　　要：以玉米淀粉和甲基丙烯酰氧乙基三甲基氯化铵(DMC)为原料,硝酸铈铵为引发剂,合成阳离子型接枝淀粉St-g-PDMC。通过正交实验对St-g-PDMC的合成条件进行了优化,并采用FTIR和SEM对产物的结构进行了表征。结果表明,St-g-PDMC的最佳合成条件:淀粉2 g,m(St)∶m(DMC)=1∶1.25,引发剂质量0.6 g,反应温度60℃,反应时间5 h。在此条件下,合成的St-g-PDMC中氮为3.40%,接枝率101.8%。以质量分数为2%的高岭土悬浊液为模拟水样,研究了St-g-PDMC的絮凝性能。Cationic grafted starch St-g-PDMC was synthesized by using corn starch and methacryloxyethyl trimethyl ammonium chloride(DMC)as the raw materials and ceric ammonium nitrate as the initiator.The synthesis conditions were optimized by orthogonal experiments,and the structure of the product was characterized by FTIR and SEM,re-spectively.The results show that the optimum synthesis conditions are at the ratio of starch 2 g to m(St)∶m(DMC)of 1∶1.25 with the initiator dosage of 0.6 under the reaction temperature of 60℃for five hours.Under these conditions,the nitrogen content is 3.40%,and the grafted ratio of St-g-PDMC is 101.8%,respectively.The flocculation perfor-mance of St-g-PDMC was studied by kaolin suspension with a mass fraction of 2%.

关 键 词：接枝淀粉 絮凝剂 絮凝性能 

分 类 号：O636.12[理学—高分子化学]