羧甲基纤维素钠接枝共聚制备高吸水性树脂

摘要

By using acrylamide（ AM）, acrylic acid（AA） and sodium carboxy methyl cellulose （CMC） as raw materials, through the inverse emulsion polymerization method, absorbentresin was prepared. To de- termine the best preparation conditions for the resin, the influence of reacting time, temperature, the quanti- ty of initiators, CMC and cross linking on water absorbing capacity were investigated. The highest water absorption was 2 280.42 g/g. Scanning electron microscopy（SEM） was employed to characterize the su- perabsorbent resin and to analyze the structure of superabsorbent.%通过反相乳液聚合的方法，以丙烯酰胺（AM）、丙烯酸（AA）和羧甲基纤维素钠（CMC）为原料，制备高吸水性树脂．研究反应时间、合成温度、引发剂量、纤维素用量、交联剂量对树脂吸水能力的影响，并确定树脂的最佳制备条件：在反应时间2．25h，加入占单体质量1％的纤维素，引发剂占单体摩尔分数的0．71％，交联剂占单体质量分数为0．12％时，制得的树脂吸水倍率最高可达2280．42g/g．采用扫描电镜（SEM）对高吸水性树脂进行表征，并分析高吸水树脂的结构．