具有包络作用的壳聚糖的合成及其吸附性能  

Synthesis of Chitosan Linked β-Cyclodextrin and Its Adsorption Capacity for p-Nitrophenol

作　　者：魏永锋[1] 张苏敏[1] 

机构地区：[1]西北大学化学系,西安710069

出　　处：《应用化学》2005年第7期772-775,共4页Chinese Journal of Applied Chemistry

基　　金：陕西省自然科学基金资助项目(2001H10);陕西省教育厅专项科学研究计划项目(01JK073)

摘　　要：以壳聚糖与β环糊精为原料,合成了一种具有包络作用的壳聚糖衍生物CTSβCD。研究了不同条件下该衍生物对p硝基苯酚(pNP)的吸附行为。结果表明,该衍生物对p硝基苯酚具有良好的吸附能力。当p硝基苯酚的初始质量浓度在50～350mg/L范围内时,其吸附曲线符合Langmuir等温吸附方程;最佳吸附条件为:p硝基苯酚150mg/L,pH=11.2,35℃,此时吸附量为83.76mg/g,比未衍生的壳聚糖的最大吸附量29.20mg/g增加了54.56mg/g。A kind of insoluble chitosan linked β-cyclodextrin(CTS-β-CD) was prepared, which has property to form host-guest complexes with various organic compounds. The isothermal sorption kinetics of CTS-β-CD for p-nitrophenol was investigated by spectrophotometry. The result is satisfied with the Langmuir equation. In pH=11.2 media, at 35 ℃, when p-nitrophenol(pNP) initial concentration is 150 mg/L, the adsorption (capacity) of CTS-β-CD for p-nitrophenol is 83.76 mg/g, 54.56 mg/g higher than that of CTS, which is only 29.20 mg/g.

关 键 词：壳聚糖 Β-环糊精 P-硝基苯酚 吸附 

分 类 号：O647.3[理学—物理化学]