摘要
为了提高高吸水性树脂的吸液性能,实验采用反相悬浮聚合法,向丙烯酸(AA)/丙烯酰胺(AM)二元体系中引入2-丙烯酰胺基-2-甲基丙磺酸(AMPS)作为第三种聚合单体合成高吸水性树脂.通过正交试验研究单体配比、丙烯酸中和度、交联剂用量和引发剂用量四个因素对产品性能的影响.红外光谱和扫描电镜测试结果显示产物为AA/AM/AMPS三元共聚物,粒子呈球形,球表面为褶皱状.最佳实验条件:单体摩尔配比(AA/AM/AMPS)为1.25∶1∶0.7,丙烯酸中和度为90%,交联剂用量(占单体总量)为0.08%,引发剂用量为0.7%.此条件下产品的吸蒸馏水率可达1 720mL/g,吸盐水率达165 mL/g.
In order to improve the absorption capability of superabsorbent resin, the superabsorbent resin was synthetized through introducing 2-acrylamido-2-methyl propane sulfonic acid （ AMPS ） into the binary system of acrylic acid （AA） and acrylamide （AM） as third polymerization monomer with inverse suspension polymerization. With the orthogonal tests, the effect of monomer ratio, neutralization degree of AA as well as dosage of both crosslinker and initiator on the properties of products were investigated. The results of both infrared （IR） spectrum and scanning electron microscope （SEM） analysis show that the experimental product is AA/AM/AMPS terpolymer, and the obtained particles are spherical with crenulate surface. The optimum experimental condition is that the monomer molar ratio is 1.25 （AA） ： 1 （AM） ： 0. 7 （ AMPS ）, the neutralization degree of AA is 90%, the dosage of crosslinker is 0. 08%, and the dosage of initiator is 0. 7 %. Under the optimum condition, the absorption rate of product in distilled water and NaC1 solution can reach 1 720 mL/g and 165 mL/g, respectively.
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2013年第2期155-160,共6页
Journal of Shenyang University of Technology
基金
辽宁省科技计划资助项目(辽科发[2010]36号)
作者简介
李三喜（1962-），男，湖南安乡人，教授，博士，主要从事烯烃催化聚合及高性能有机／无机复合材料等方面的研究．
