互穿网络耐盐性高吸水性树脂的紫外光聚合及性能研究

UV polymerization and performance research of IPN salt-resistant super absorbent resin

紫外(UV)光聚合法合成高吸水性树脂,对比于传统的聚合方法具有工艺过程简单,反应时间短,易操作,可在常温下进行以及无三废污染等优点。本文以丙烯酸、淀粉和聚乙烯醇为原料,采用紫外光引发聚合方法制备了互穿网络耐盐性高吸水树脂。研究了丙烯酸中和度、聚乙烯醇(PVA)和淀粉用量、辐照时间等因素对高吸水树脂吸液性能的影响,用红外光谱和扫描电镜表征了样品。在最佳试验条件下聚合制得的高吸水树脂,其吸去离子水率为2235g/g,吸生理盐水率(0.9%NaCl水溶液)为148g/g。

In order to synthesize of water super-absorbent resin,an interpenetrating network （IPN） salt-resistant polymer was prepared with starch,acrylic acid （AA） and poly （vinyl alcohol） （PVA） by use of UV light from a high-pressured ultraviolet mercury lamp without using any cross-linker and initiator. The influences of neutralization degree,reaction time,the content of starch and PVA on the water absorbent performance of sample were studied. The absorbent perfomance of the resin polymerized under the optimum condition is as follows,the distilled water absorbency is 2235 g/g and salty water （0.9% NaCl） absorbency is 148 g/g.