摘要
以液体石蜡为连续相,Span80和Tween80为复合乳化剂,采用反相乳液聚合法合成了玉米淀粉丙烯酸吸水性树脂,研究了反应条件对树脂吸水率的影响,并对树脂吸水动力学和耐热稳定性进行了研究,结果表明在单体(AA)与淀粉(St)质量比5∶1、油水体积比1.2∶1、引发剂(KPS)质量2 g、交联剂(NMBA)质量0.175 g、单体中和度60%、反应时间2.5 h、反应温度60℃下产品最大吸水率为70 g/g,树脂吸水过程符合一级动力学,产品具有较好的热稳定性。
Using paraffin oil as continuous phase, span -80 and tween -80 as compound emulsifying agent, corn starch water- absorbent resin was synthesized with corn starch and acrylic acid by graft co - polymerization in inverse emulsion. The effect of reaction condition on water - absorptivity of the resin, its water absorption kinetics and thermal stability were studied. The result showed that when mass ratio of acrylic acid to starch was 5： 1, volume ratio of oil to water 1.2： 1, initiator agent 2 g, cross -linking agent 0. 175 g, neutralization content of monomer 60% , reaction time 2.5 h, reaction temperature 60 ℃, the maximum of water absorption of the polymer was 70 g/g. The absorbing water process accorded with first order kinetics. The product was of thermal stability.
出处
《粮油食品科技》
北大核心
2012年第4期7-10,共4页
Science and Technology of Cereals,Oils and Foods
基金
河南工业大学2012校科研基金(2010XZR018)
