Synthesis of a Novel Double Crosslinking Amphoteric Cassava Starch

摘要：

　　The grafted copolymerization of dimethyldiallylammoniumchloride (DMDAAC) and N,N′-methylene bisacrylamide onto cassava starch was investigated with water as solvent and ammonium persulfate-sodium sulfite as redox initiator.In above conditions,double crosslinking amphoteric cassava starch was synthetized by using sodium hydroxide as catalyst,epichlorohydrin as crosslinking agent and chloroacetic acid as etherification agent.The DS and DC could reach to 0.108 and 0.391 respectively under the following conditions:m(AGU) ∶ m(DMDAAC)=1∶1.5,the initiator mass fraction 3.5% (vs.dry starch),grafted polymerization temperature 45℃ and time for 5 h,etherification temperature 50℃ and time for 5 h,n(AUG):n(C1CH2COOH)=1∶1 and n(AUG)∶n(NaOH)=1∶1.5.The product was characterized by infrared spectrum (FTIR),scanning electron microscopy (SEM) and X-ray diffraction spectrum (XRD).The results indicate that the cassava starch is modified successfully,and the final product is a novel double crosslinking amphoteric cassava starch.

关键词： Amphoteric cassava ctarch Double crosslinking Synthesis Characterization

作者: Huqiang LV Heping Li Guowei Bai Hui Ou Yongzhe Yang Yao Zhang

作者单位: Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi, 541004, China

会议类型: 国际会议

会议名称: the 2012 International Conference on Frontiers of Advanced Materials and Engineering Technology (2012年先进材料与工程技术国际会议(FAMET 2012))

会议地点: 厦门

会议语种:英文

页码: 476-479

在线出版日期: 2012-01-04（万方平台首次上网日期，不代表论文的发表时间）