丙酮酸壳聚糖衍生物的制备及其吸附性能研究  

Synthesis and Adsorption Properties of Chitosan Modified by Pyruvic Acid

作　　者：马全红[1] 高永红[1] 邹宗柏[1] 

机构地区：[1]东南大学化学化工系,南京210096

出　　处：《东南大学学报（自然科学版）》2000年第6期127-131,共5页Journal of Southeast University：Natural Science Edition

摘　　要：利用壳聚糖C2 位上活泼氨基与丙酮酸进行大分子反应 ,采用正交试验法优化合成条件 ,合成了带有高取代羧基、能溶于水的功能聚合物丙酮酸改性壳聚糖 (简称PCTS) .研究了PCTS对Cu2 + ,Zn2 + ,Co2 + 等重金属离子的吸附性能 ,其对低浓度金属离子去除率分别达到 1 0 0 % ,99 8%和 40 5 % ,与壳聚糖、水杨醛改性壳聚糖相比 。Chitosan functional polymer containing schiff base group was synthesized by chemical modification of amino group of chitosan with pyruvic acid. The synthesis conditions were optimized by orthogonal test method. The adsorption properties of PCTS for Cu(Ⅱ),Zn(Ⅱ),Co(Ⅱ) were also investigated. The results show that the percentage of removing low concentration metal ions are 100%,99 8%,40 5%,respectively. In comparison with chitosan and chitosan modified by salicylaldehyde, the solvencies and adsorption properties are improved.

关 键 词：壳聚糖 丙酸酮 化学改性 正交试验 吸附 性能 制备 

分 类 号：TQ914.2[化学工程] O636.1[理学—高分子化学]