反相乳液中Fe(Ⅱ)络合物对淀粉接枝丙烯酰胺的聚合作用  

Effect of Fe(Ⅱ)complex on graft copolymerization of starch and acrylamide in inverse emulsion

作　　者：田野[1] 曹亚峰[1] 童欣[1] 刘凯[1] 谭凤芝[1] 

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2013年第4期267-270,共4页Journal of Dalian Polytechnic University

基　　金：大连市科学技术基金计划(2012J21DW010)

摘　　要：反相乳液中淀粉接枝丙烯酰胺聚合反应体系里加入Fe(EDTA)2-,与过硫酸铵(APS)形成复配引发体系,Fe(EDTA)2-被氧化成Fe(EDTA)-,探讨了Fe(EDTA)-对反相乳液中接枝共聚反应的控制作用。结果表明,Fe(EDTA)2-加入接枝共聚反应体系中后,单体转化率随时间平稳的增长,反应初期体系温度无明显升高,动力学曲线表现出良好的线性关系,线性相关系数为0.983 4;当络合物浓度为0.34mmol/L、n(FeSO4)∶n(Na2EDTA)=1∶1.15、Span20质量分数为5%时,接枝率为153.6%,特性黏数为390.8mL/g。Fe（EDTA）^2- was added in graft polymerization of starch-acrylamide in inverse emulsion to form complex initiation system with ammonium persulfate（APS）, and Fe（EDTA）^2- was oxidized to Fe（EDTA） . The controlling effect of Fe（EDTA）-on the inverse emulsion copolymerization was explored. The results showed that the monomer conversion increased smoothly with reaction time when Fe（EDTA）^2-was added in the inverse emulsion system, but reaction temperature was not increased obviously in the beginning. The kinetic curve showed a good linear relationship with a linear correlation coefficient of 0. 983 4. When the concentration of Fe（EDTA）^2- was 0.34 mmol/L, n（FeSO4） ： n（NazEDTA） = 1 ： 1.15 and the mass fraction of emulsifier was 5%, the grafting ratio was up to 135.4% and intrinsic viscosity of the product was 390.8 mL/g.

关 键 词：淀粉 丙烯酰胺 接枝共聚 Fe(EDTA)2- 反相乳液聚合 

分 类 号：O69[理学—化学]