天然高分子吸附剂研究 Ⅹ.交联壳聚糖树脂的制备及其吸附性能  

STUDIES ON NATURAL MACROMOLECULAR ADSORBENTS (Ⅹ) SYNTHESIS AND ADSORPTION PROPERTY OF CROSSLINKING CHITOSAN RESIN

作　　者：曲荣君[1] 王春华[1] 

机构地区：[1]烟台师范学院化学系

出　　处：《水处理技术》1997年第4期230-235,共6页Technology of Water Treatment

基　　金：世界银行贷款项目

摘　　要：采用先使壳聚糖（ＣＴＳ）与过渡金属离子（Ｃｕ２＋或Ｎｉ２＋）形成配合物，然后在稀碱条件下用环氧氯丙烷（ＥＣＨ）进行交联，最后用稀酸除去金属离子的方法，合成了一系列（Ⅰ～Ⅵ）具有不同交联度的壳聚糖树脂，研究了该系列树脂对Ｃｕ２＋、Ｎｉ２＋的静态吸附性能。结果表明，上述树脂对两种离子均具有良好的吸附能力，其对Ｃｕ２＋、Ｎｉ２＋的最佳吸附量可分别达２．６２ｍｍｏｌ／ｇ和２．４９ｍｍｏｌ／ｇ，同时发现，Ｃｕ２＋在树脂的合成中起到了一种“模板剂”的作用，使合成的树脂对Ｃｕ２＋的吸附比对Ｎｉ２＋具有更强的吸附选择性。A series of chitosan resins with different degree of crosslinking were synthesized by the method as follows:Chitosan (CTS) first reacts with transition metallic ion(C u 2+ or N i 2+ ) then with crosslinking agent ECH, the chitosan-metal chelates was obtained. On desorbing the metallic ion from the chelate by dilute acid, the target resin(Ⅰ Ⅳ) were gained. The results of static adsorption of the above mentioned resin showed that(1) all these resins have good adsorption for C u 2+ and N i 2+ , the greatest adsorption capacities are 2.62 and 2.49 mmol·g -1 respectively. (2) The 'template effect' of C u 2+ makes the resins (Ⅰ Ⅲ) have better adsorption properties for C u 2+ than for N i 2+ .

关 键 词：天然高分子 壳聚糖树脂 制备 吸附性能 吸附剂 

分 类 号：O636.1[理学—高分子化学] O647.33[理学—化学]