第 48 卷第 6 期Vol. 48 No. 6
2018 年 12 月Dec 2018
所属栏目：功能材料

阴离子型PSSS／PSA微球的制备及对谷氨酸的吸附性能初探
余佳照，李延斌*，何红芳，胡译之，杨海艳 （中北大学 化学系，山西 太原 030051）
摘　要：在溶液聚合体系中，采用自由基聚合法将功能单体对苯乙烯磺酸钠（SSS）接枝于聚苯乙烯伯胺微球微粒（PSA）表面，制得了接枝微粒PSSS／PSA，考察了主要因素对接枝聚合的影响，并初步研究了其对L-谷氨酸的吸附特性。已接枝到聚苯乙烯伯胺微球微粒表面的聚合物层，会对后续的接枝聚合产生阻隔作用；温度及引发剂用量等因素显著影响接枝度。在优化条件下：温度50℃，单体质量1.046 4 g（溶液质量分数的2.22%），引发剂用量0.060 0 g（占单体的质量分数5.73%），可制得接枝度为 230.27 mg·g-1的接枝微粒。其吸附量达120 mg·g-1。
关键词：聚苯乙烯伯胺微球；对苯乙烯磺酸钠；L-谷氨酸；表面分子印迹；吸附
中图分类号：TQ31　　文献标识码：A　　文章编号：1009-9212（2018）06-0040-06
Preparation of Anionic PSSS/PSA Microspheres and Its Adsorption Properties for Glutamic Acid
YU Jia-zhao, LI Yan-bin*, HE Hong-fang, HU Yi-zhi, YANG Hai-yan (Department of Chemistry, North University of China, Taiyuan 030051, China)
Abstract：In the solution polymerization system, the functional monomer sodium styrene sulfonate(SSS) was grafted onto the surface of polystyrene primary amine microsphere particles by free radical polymerization method, and the grafted particles PSSS/PSA were prepared. The main factors were investigated for graft polymerization. The effect and preliminary study on its adsorption characteristics for L-glutamic acid were tested. The polymer layer which has been grafted onto the surface of the polystyrene primary amine microsphere will have a barrier effect on the subsequentgraft polymerization; the temperature and the amount of the initiator significantlyaffect the degree of grafting; and under the optimal conditionswere obtained as following: the temperature of 50℃; the mass of the monomer of 1.046 4 g (2.22% of the mass fraction of thesolution); the amount of the initiator of 0.060 0 g (5.73% by mass of the monomer). Grafted particles having a grafting degree of 230.27 mg·g-1 were achieved.
Key words：polystyrene primary amine microspheres; sodium p-styrenesulfonate; L-glutamic acid; surface molecular imprinting; adsorption
基金项目：国家自然科学基金项目（21404093）。
作者简介：余佳照（1993-），女，山西大同人，硕士研究生，研究方向：功能高分子（E-mail：709963198@ qq.com）。
联 系 人：李延斌，博士，副教授，研究方向：功能高分子（E-mail：lyb2010@ nuc. Edu.cn）。
收稿日期： 2018-10-0