XG-g-P(AA-co-AM)/AC复合高吸水性树脂的制备与性能  

Preparation and characterization of XG-g-P(AA-co-AM)/AC composite super absorbent resin

作　　者：苏秀霞[1] 李宜洋[1] 李仲谨[1] 李铭杰[1] 赵燕[1] 郝明德[2] 

机构地区：[1]陕西科技大学化学与化工学院教育部轻化工助剂化学与技术重点实验室,陕西西安710021 [2]中国科学院水利部水土保持研究所,陕西杨凌712100

出　　处：《化工进展》2011年第7期1556-1561,共6页Chemical Industry and Engineering Progress

基　　金：陕西省科技计划(2008K06-15);"十一五"国家科学技术支撑计划(2006BAD09B04);陕西科技大学研究生创新基金项目

摘　　要：采用反相悬浮聚合法制备了具有耐盐型的XG-g-P(AA-co-AM)/AC复合高吸水性树脂,并对其吸水性能及其影响因素进行了考察,借助傅里叶红外光谱仪(FT-IR)、X射线衍射仪(XRD)、热重分析仪(TGA)对树脂的结构进行了表征。结果表明,凹凸棒黏土(AC)表面的硅羟基可能与丙烯酸(AM)、丙烯酰胺(AA)和黄胞胶(XG)共同参与了接枝共聚反应,复合树脂的热稳定性有所提高。比较理想的工艺条件下制得的树脂具有良好的吸水和抗盐性能,最高吸水倍率达871.2 g/g,最高吸盐水倍率达119.8 g/g。生物降解性能实验说明了复合树脂可以被土壤中的微生物降解,90天降解率达26.1%。The composite super absorbent resin,xanthan gum-g-poly（acrylic acid-co-cryl amide）/ attapulgite clay with good salt tolerance was synthesized through inverse suspension copolymerization.The influence factors of preparing composite super absorbent resin were studied.FT-IR,XRD and TGA were used on characterization of the super absorbent resin.The results showed that：Si-OH and AM/AA participated in graft polymerization reaction with xanthan gum.The preparation of super absorbent resin under optimum conditions has good properties of water absorption and salt resistance,with the highest water absorption up to 871.2 g/g and 0.9% NaCl solution absorption up to 119.8 g/g.Degradation tests showed that super absorbent resin could be degraded by microbes,and the degradation degree was up to 26.1% within 90 days.

关 键 词：黄胞胶 凹凸棒黏土 反相悬浮聚合 复合高吸水性树脂 

分 类 号：TQ321[化学工程—合成树脂塑料工业]