两性离子接枝共聚淀粉的制备及对Cu^2+的吸附性能  

Preparation of zwitterionic graft copolymerized starch and its adsorption performance for Cu^2+

作　　者：王梓民 石海信 王爱荣 爨珊珊 何强 王锋 Wang Zimin;Shi Haixin;Wang Airong;Cuan Shanshan;He Qiang;Wang Feng(Guangxi Colleges and University Key Laboratory of Beibu Gulf Oil and Natural Gas Resource Effective,Beibu Gulf University,Qinzhou 535011,China;School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]北部湾大学广西高校北部湾石油天然气资源有效利用重点实验室,广西钦州535011 [2]广西大学化学化工学院,广西南宁530004

出　　处：《工业水处理》2020年第11期53-57,共5页Industrial Water Treatment

基　　金：广西高校高水平创新团队及卓越学者计划(桂教人[2016]42号);广西教育厅高校中青年教师基础能力提升项目(2018KY0618);广西高校北部湾石油天然气资源有效利用重点实验室基金(2017KLOG13)。

摘　　要：以玉米淀粉(St)和两性离子单体(ZM)为主要原料,通过溶液聚合和化学交联制备了两性离子接枝共聚淀粉(ZS)。使用FTIR、TGA-DSC、XRD、SEM-EDS对产物进行了表征,评价了产物对Cu2+的静态吸附效果。结果表明:St从结晶态转变为无定型态,产物在270℃以下热稳定性良好,对Cu^2+的最大吸附量为63 mg/g,吸附过程符合准二级动力学模型和Freundlich等温模型。产物在高浓度Cu2+溶液中不聚沉,吸附性能良好。Using corn starch(St)and zwitterionic monomer(ZM)as main raw materials,zwitterionic graft copolymerized starch(ZS)was prepared through solution polymerization and chemical cross-linking method.The product was characterized by FTIR,TGA-DSC,XRD and SEM-EDS.Static adsorption effects of the product on Cu^2+was evaluated.The results showed that St changed from crystal to amorphous structure.The product had good thermal stability under 270℃.Saturated adsorption amount of Cu^2+was 63 mg/g.The adsorption process conformed to pseudo-second-order kinetic model and Freundlich isotherm adsorption model.The product had good adsorption performance and it did not precipitate in high concentration Cu^2+solution.

关 键 词：两性离子聚合物 淀粉 吸附剂 铜离子 反聚电解质效应 

分 类 号：X703.5[环境科学与工程—环境工程] TQ424[化学工程]