Preparation and adsorption property of chitosan beads bearing β-cyclodextrin cross-linked by 1,6-hexamethylene diisocyanate

被引：44

作者：

Zha, Fei ^{[1
]}

Li, Shaoguang ^{[1
]}

Chang, Yue ^{[1
]}

机构：

[1] NW Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2008年 / 72卷 / 03期

关键词：

chitosan beads; beta-cyclodextrin; 1,6-hexamethylene diisocyanate; hydroquinone; adsorption; thermodynamics;

D O I：

10.1016/j.carbpol.2007.09.013

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Glutaraldehyde activated chitosan beads bearing beta-cyclodextrin cross-linked by 1,6-hexamethylene diisocyanate was prepared, and characterized by IR, XRD and TG-DTA. Its adsorption property of hydroquinone was investigated by spectrophotometry. The adsorption capacity increases with increasing temperature and pH value. The adsorption process can be better simulated by Freundlich isotherm equation (R(2) > 0.996) and the thermodynamic parameters such as free energy change, enthalpy change and entropy change were calculated. The adsorption of hydroquinone on chitosan beads bearing beta-cyclodextrin cross-linked by 1,6-hexamethylene diisocyanate is a spontaneous, endothermic and random process. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：456 / 461

页数：6

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