摘要
以淀粉为主要原料,丙烯酰胺、丙烯酸为接枝单体,采用反相乳液聚合方法合成了改性淀粉三元接枝共聚物;考察了交联剂、引发剂浓度、单体配比、中和度、反应温度等因素对淀粉-丙烯酸-丙烯酰胺三元接枝共聚物吸水性能的影响.实验结果显示,采用反相乳液聚合方法能得到具有高吸水率的淀粉接枝共聚物;且反应温度、引发剂浓度、交联剂浓度和单体配比、中和度等因素对淀粉三元接枝产物吸水性能有显著的影响,其最佳反应条件为:交联剂浓度1.2×10-3kg.L-1;引发剂浓度6×10-3kg.L-1;丙烯酰胺/丙烯酸=0.11;中和度75%.
The ternary starch graft copolymers are synthesized by inverse emulsion polymerization with cassava starch, acrylic acid （AA） and acrylamide （AM） as raw material and potassium permanganate as the initiator. The effects of reaction temperature, concentrations of crosslinking agent and initiator, ratio of AA to AM and neutralization degree on water absorption are investigated. The results show that the influences of crosslinking agent and initiator, ratio of acrylic acid to acrylamide and neutralization degree on water absorption are predominant. The optimal condition is that, the concentrations of crosslinking agent and initiator are 1.2×10^-3kg·L^-1 and 6 ×10^-3kg·L^-1 , respectively, AA/AM =0.11, neutralization degree is 75%.
出处
《广州大学学报（自然科学版）》
CAS
2007年第4期35-38,共4页
Journal of Guangzhou University:Natural Science Edition
基金
国家自然科学基金资助项目(20666001)
广东省自然科学基金资助项目(5001880)
关键词
三元接枝共聚物
反相乳液聚合
吸水性能
影响因素
ternary starch graft copolymer
inverse emulsion polymerization
water absorption, influence factor
