丙烯酸接枝淀粉基可降解紫外光固化高吸水性树脂的制备与性能  

Preparation and properties of acrylic acid grafted starch based UV-curing degradable superabsorbent polymer

作　　者：贺倩[1] 郭文迅[1] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《应用化工》2011年第3期431-434,437,共5页Applied Chemical Industry

基　　金：国家科技型中小企业技术创新基金项目(09C26214305046);国家科技部科技人员服务企业行动项目(2009GJD20007)

摘　　要：以丙烯酸接枝淀粉为基体,不饱和聚酯酰胺脲树脂为交联剂制备出一种可降解高吸水性树脂,该树脂不加任何光引发剂即可紫外光固化成膜。研究了树脂的吸水速率及交联剂的加入量、光固化时间对产品吸水率的影响。结果表明,该高吸水性树脂对不同溶液均具有较好的吸收能力,吸水速度较快,在蒸馏水、自来水、0.9%NaCl溶液、0.9%KCl溶液中的吸水率分别为905,3501,00,120 g/g;10 min内对蒸馏水的吸收倍率达200 g。该高吸水性树脂的降解从表面开始,逐渐向里面降解。A degradable superabsorbent resin was prepared by acrylic acid grafted starch with unsaturated polyester-urea amide as a cross-linking agent,a membrane was prepared by the resin,in the condition of UV-curing without adding any photo-initiator.The influence of absorbency rate of the resin,the dosage of cross-linking agent and the UV-curing time on the absorbency were discussed.The results showed that the product had good absorbency ability to different solutions,and the absorbency rate was the fast.Water absorbency in distilled water,tap water,0.9% NaCl,0.9% KCl solution were 905,350,100,120 g/g,respectively.Moreover,water absorbency in distilled water can reach 200 g/g in 10 min.The degradation originate from surface and evolve towards inside gradually.

关 键 词：可降解 光固化 高吸水树脂 

分 类 号：TQ317[化学工程—高聚物工业]