Poly(Ba-co-EGDMA)-g-APBA大孔树脂的制备及对甜菊糖苷分离性能的研究  

Preparation of Poly(Ba-co-EGDMA)-g-APBA macroporous resin andits separation performance for stevioside

作　　者：贾茹 李昊 吕银[1] 王贺云[1] JIA Ru;LI Hao;LYU Yin;WANG Heyun(School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base forGreen Processing of Chemical Engineering,Shihezi University,Shihezi 832000,China)

机构地区：[1]石河子大学化学化工学院,化工绿色过程省部共建国家重点实验室培育基地,新疆石河子832000

出　　处：《功能材料》2023年第9期9211-9219,9236,共10页Journal of Functional Materials

基　　金：国家自然科学基金项目(22168033);石河子大学双一流学科资金项目(SHYL-YB201806);石河子大学创新发展项目(CXFZ201909);长江学者和创新研究团队项目(No.IRT_15R46);重点领域兵团创新团队项目(2015BD003)。

摘　　要：研究丙烯酸丁酯(Ba)为单体,二甲基丙烯酸乙二醇酯(EGDMA)为交联剂,乙酸丁酯为致孔剂,采用悬浮聚合法合成了Poly(Ba-co-EGDMA)大孔树脂,通过碱水解处理使大孔树脂表面形成羧基,然后采用EDC-NHS化学偶联法将硼酸功能化单体3-氨基苯硼酸(APBA)成功接枝到羧基化树脂表面,得到Poly(Ba-co-EGDMA)-g-APBA大孔树脂并研究其对甜菊糖苷分离性能。实验结果表明,当单体比n(Ba)∶n(EGDMA)=1∶1、NaOH水解溶液的浓度为20%(质量分数)并且水解时间为24 h时,树脂显示出均一、规则的球形,硼元素含量为1.66%,对甜菊糖中STV和RA的选择性达到为10.29,总吸附量为43.14 mg/g,显示出较好的分离性能。In this paper,Poly(Ba-co-EGDMA)macroporous resin was synthesized by suspension polymerization using butyl acrylate(Ba)as the monomer,ethylene glycol dimethacrylate(EGDMA)as the cross-linker and butyl acetate as the porogenic agent.The synthetic resin was treated with alkali hydrolysis to form carboxyl groups on the resin surface.The boronic acid functionalized monomer 3-aminophenylboronic acid(APBA)was successfully grafted onto the surface of the carboxylated resin by EDC-NHS chemical coupling method to obtain Poly(Ba-co-EGDMA)-g-APBA macroporous resin and to study its performance for steviol glycoside separation.The experimental results showed that when the monomer ratio n(Ba)∶n(EGDMA)=1∶1,the concentration of NaOH hydrolysis solution is 20wt%and the hydrolysis time is 24 h,the resin showed homogeneous and regular spherical shape,and the elemental boron content was 1.66%.The selectivity of the resin for STV and RA in stevia reached 10.29,and the total adsorption capacity was 43.14 mg/g.All results showed a good separation performance.

关 键 词：丙烯酸酯类大孔树脂 3-氨基苯硼酸 莱鲍迪苷A(RA) 甜菊苷(STV) 吸附选择性 

分 类 号：TQ028.3[化学工程]