CP-g-P(AA/AMPS)高吸水树脂的制备及其吸附性能  

Preparation and adsorption properties of CP-g-P(AA/AMPS) superabsorbent polymer

作　　者：王品[1] 尹国强[2] 何明[2] 崔英德[2] 杜建军[1] 

机构地区：[1]仲恺农业工程学院环境科学与工程学院,广东广州510225 [2]仲恺农业工程学院绿色化工研究所,广东广州510225

出　　处：《仲恺农业工程学院学报》2011年第4期16-21,共6页Journal of Zhongkai University of Agriculture and Engineering

基　　金：国家自然科学基金(30971867);广东省自然科学基金(9251022501000003);广东省科技计划(2008B021000043)资助项目

摘　　要：以棉籽蛋白(Cottonseed protein,CP)、丙烯酸(Acrylicacid,AA)和2-丙烯酰胺基-2-甲基丙磺酸(2-Acrylamido-2-methylpropane sulfonic acid,AMPS)为原料,N,N'-亚甲基双丙烯酰胺(N,N'-methylene bisacry-lamide,NMBA)为交联剂,过硫酸钾和亚硫酸氢钠为引发剂,采用水溶液聚合法制备了CP-g-P(AA/AMPS)高吸水树脂,探讨了棉籽蛋白、交联剂和引发剂用量,AA中和度以及AA与AMPS配比对树脂吸水性能的影响,并就树脂对Zn2+的吸附性能进行了研究.结果表明,CP-g-P(AA/AMPS)的最高吸水率为1 290 g/g,对Zn2+的吸附容量随Zn2+初始浓度的增大而增大,随树脂用量的增大而减小,吸附过程符合准二级动力学模型.CP-g-P （AA/AMPS） superabsorbent polymer was prepared by aqueous solution polymerization, using cottonseed protein （ CP）, acrylic acid （ AA ）, 2-acrylamido-2-methylpropane sulfonic acid （AMPS） as raw material, N,N′-methylene bisacrylamide as crosslinker, and K2S2O8-NaHSO3 as initiator. The effects on water absorbency were investigated, such as the amount of CP, crosslinker and initiator, neutralization degree of AA and the ratio of AMPS to AA. The adsorption properties for Zn^2＋ were discussed as well. The results showed that water absorbency in distilled water was 1 290 g/g at the optimum condition. Adsorption capacity for Zn^2＋ increased with the increasing metal ion concentration, and decreased with the amount of superabsorbent. Zn^2＋ adsorption behavior followed the pseudo second-order kinetic model.

关 键 词：高吸水树脂 棉籽蛋白 2-丙烯酰胺基-2-甲基丙磺酸 吸附 

分 类 号：TQ316.6[化学工程—高聚物工业]