摘要
以玉米淀粉为原料,过硫酸铵和亚硫酸氢钠作为引发剂,丙烯酰胺(AM)和对乙烯基苄基三丁基氯化鳞(VBTBPC)为单体,在水相体系中制备了季磷盐型阳离子淀粉接枝共聚物。研究了丙烯酰胺浓度、单体配比对反应接枝率(G)、接枝效率(E)、产率(Y)的影响,并对接枝共聚物的阳离子度(CD)和单体的反应效率(RE)做了探讨。采用红外光谱、X射线衍射(XRD)和扫描电子显微镜(SEM)对接枝共聚物结构、结晶性和表面形貌分别进行了分析。结果表明,VBTBPC和AM接枝到了淀粉大分子上,其结晶性比淀粉的结晶性弱。保持单体总质量不变,当n_(AM):n_(VBTBPC)的值等于1.5时,接枝共聚物的接枝率和阳离子度达到最大值,分别为98%和0.21。
A cationic polymer was synthesized by graft copolymerization of corn starch with acrylamide and tributyl- 3-[（and 4-）vinylbenzyl] phosphonium chloride in aqueous solution, and ammonium persulfate-sodium bisulfate as initiator. The grafting ratio （G）, grafting efficiency of monomers （E） and yield of starch copolymers （Y） were studied. The effects of the acrylamide concentration and monomer ratio on cationic degree （CD） and reaction efficiency （RE） were discussed. The results showed that the CD and G of the copolymers reached a maximum of 0. 21 and 98% ,respectively,when the ratio of acrylamide and tributyl-3-[（and 4-）vinylbenzyl] phosphonium chloride was 1.5. Furthermore, the copolymer was structurally characterized by FTIR,XRD and SEM.
出处
《化工新型材料》
CAS
CSCD
北大核心
2015年第3期152-154,157,共4页
New Chemical Materials
基金
河南省高等学校重点科研项目(14B430035)
关键词
淀粉
丙烯酰胺
对乙烯基苄基三丁基氯化鏻
接枝共聚物
starch
aerylamide
tributyl-3-E(and 4-)vinylbenzyl
phosphonium chloride
starch-grafted copolymer
