摘要
采用自由基聚合法在溶液聚合体系中将功能单体丙烯酰氧乙基三甲基氯化铵(DAC)接枝于聚苯乙烯伯胺微球(PSA)表面,制备了接枝微粒PDAC/PSA,考察了主要因素对接枝聚合的影响,并初步探究了其对L-谷氨酸的吸附特性。结果表明,在反应温度25℃、单体质量分数为6%、引发剂占单体质量的1.2%的条件下,可制得接枝度为431mg/g的接枝微粒,其对L-谷氨酸的吸附量达140mg/g。
In the solution polymerization system, the grafted microparticles PDAC/PSA were prepared by grafting functional monomer acryloyloxyethyltrimethylammonium chloride(DAC) onto the surface of polystyrene primary amine microspheres(PSA) through a free radical polymerization method. The main influence factors on graft polymerization were investigated, and its adsorption characteristics for L-glutamic acid were preliminarily explored. The results showed that at the temperature of 25℃, the mass fraction of the monomer is 6% of the total solution, and the initiator is 1.2% of the mass of the monomer, the grafted particles with a grafting degree of 431 mg·g-1 can be obtained. Its adsorption capacity for L-glutamic acid reaches 140 mg·g-1.
作者
胡译之
李延斌
余佳照
何红芳
Hu Yizhi;Li Yanbin;Yu Jiazhao;He Hongfang(Department of Chemistry,North University of China,Taiyuan,030051)
出处
《化学通报》
CAS
CSCD
北大核心
2020年第3期272-276,共5页
Chemistry
基金
国家自然科学基金项目(21404093)资助。
关键词
聚苯乙烯伯胺微球
丙烯酰氧乙基三甲基氯化铵
L-谷氨酸
表面
吸附
Polystyrene primary amine microspheres
Acryloyloxyethyltrimethylammonium chloride
L-glutamic acid
Surface
Adsorption
