咖啡因分子印迹聚合物微球的悬浮聚合法制备及吸附性能研究  

Synthesis of Caffeine Molecularly Imprinted Polymer Micro-spheres by Suspension Polymerization and Their Adsorption Properties

作　　者：董雁[1] 李兆峰[1] 

机构地区：[1]龙岩学院化学与材料学院,福建龙岩364012

出　　处：《三明学院学报》2015年第4期5-10,29,共7页Journal of Sanming University

基　　金：龙岩学院"百名青年教师攀登项目"(LQ2013020)

摘　　要：以咖啡因为模板分子,乙二醇二甲基丙烯酸酯(EGDMA)为交联剂,采用悬浮聚合法在水溶液中制备印迹聚合物微球。考察功能单体的种类,模板分子与功能单体的比例,模板分子与交联剂比例以及反应时间对印迹聚合物吸附性能的影响,并用SEM观察印迹微球的形貌。结果表明,以α-甲基丙烯酸(MAA)为功能单体制备的印迹聚合物,n(咖啡因)∶n(MAA)∶n(EGDMA)=1∶4∶20得到的印迹聚合物微球形貌与吸附性能较好,最大表观结合量为14.0322μmol/g。Molecularly imprinted polymers（MIP） were prepared by suspension polymerization in water which used caffeine as imprinted molecules, ethylene glycol dimethacrylate（ EGDMA） as crosslinker. The effects of reaction conditions were studied such as the types of functional monomer, the ratio of the caffeine and functional monomer, the ratio of caffeine and EGDMA and reaction time. And the ploymers were tested by scanning electron microscopy. The results showed that n（caffeine） ∶n（AM） ∶n（EGDMA）=1 ∶4 ∶20 with α-methylacrylic acid as functional monomer the adsorption performance of microsphere were better, the surface of microspheres was better and the maximum dissociation contents of MIP were14.0322 μmol/g.

关 键 词：悬浮聚合 咖啡因 印迹聚合物微球 吸附 

分 类 号：TQ316.335[化学工程—高聚物工业]