电荷均衡型两性离子淀粉的制备与表征  

Preparation and characterization of charge-balanced zwitterionic starch

作　　者：王梓民 石海信[1] 王爱荣[1] 郑昌海 何强 石文韬 WANG Zi-min;SHI Hai-xin;WANG Ai-rong;ZHENG Chang-hai;HE Qiang;SHI Wen-tao(Department of Petroleum and Chemical Engineering of Qinzhou College,Qinzhou 535011,China;Department of Chemistry and Chemical Engineering of Guangxi University,Nanning 530004,China)

机构地区：[1]钦州学院石油与化工学院,广西钦州535011 [2]广西大学化学化工学院,广西南宁530004

出　　处：《应用化工》2018年第S02期96-99,共4页Applied Chemical Industry

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：以木薯淀粉为基体,与电荷均衡型的两性离子单体接枝共聚,制备电荷均衡型两性离子淀粉。使用IR、XRD、TGA/DSC对产物进行了表征。考察了各因素(原料配比、引发剂用量、反应温度)对接枝率、接枝效率和单体转化率的影响。评价了产物对NaCl盐水的吸收效果。结果表明:当m(单体)∶m(淀粉)=1∶1、引发剂用量11 mmol/L、反应温度60℃时,接枝率为158%、接枝效率为72%、单体转化率为83%。产物淀粉的A型晶体结构消失,起始分解温度和焓值吸热峰对应温度更低。产物对NaCl盐水的吸收效果优于原料淀粉。A charge-balanced zwitterionic starch was prepared by graft copolymerization from cassava starch with a charge-balanced zwitterionic monomer.The product was characterized using IR,XRD,and TGA/DSC.The effects of various factors(raw material ratio,initiator dosage,reaction temperature)on grafting ratio,grafting efficiency and monomer conversion were investigated.The product's absorption of NaCl brine was evaluated.Results showed that when m(monomer)∶m(starch)is 1∶1,initiator is 11 mmol/L and reaction temperature is 60℃,grafting rate is 158%,grafting efficiency is 72%and monomer conversion rate is 83%.The type-A crystal structure of cassava starch disappeared in the product.Initial decomposition temperature and enthalpy endothermic peak temperature are lower.Absorption of NaCl salt water of product is better than that of raw starch.

关 键 词：木薯淀粉 改性淀粉 接枝共聚物 两性离子聚合物 反聚电解质效应 

分 类 号：O69[理学—化学] TQ317[化学工程—高聚物工业] TS234[轻工技术与工程—粮食、油脂及植物蛋白工程]