改性壳聚糖的制备及吸附动力学  

Preparation and Adsorption Kinetics of Modified Chitosan

作　　者：梁子烨 郑佳华 宋敏慧 孙文[1] 张继国[1] Liang Ziye;Zheng Jiahua;Song Minhui;Sun Wen;Zhang Jiguo(College of Materials Science and Engineering,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学材料科学与工程学院,黑龙江哈尔滨150040

出　　处：《广东化工》2019年第1期3-4,共2页Guangdong Chemical Industry

基　　金：东北林业大学2017年度院级大学生创新训练项目(编号CL201708)

摘　　要：以壳聚糖为原料,环氧氯丙烷为中间交联剂,使聚乙烯亚胺分子接枝到壳聚糖上形成聚乙烯亚胺-壳聚糖复合物。采用红外光谱(FTIR)和X-射线衍射(XRD)对吸附材料进行表征,用原子吸收光谱测定其对Cu2+的吸附性能推断其动力学机理。结果表明,聚乙烯亚胺与壳聚糖分子成功交联。吸附性能分析表明,吸附动力学过程符合准二级动力学模型,平衡吸附量为81.97 mg/g。Chitosan was used as the raw material and epichlorohydrin was used as an intermediate cross-linking agent to graft polyethyleneimine molecules onto chitosan to form polyethyleneimine-chitosan complex. The FTIR and X-ray diffraction(XRD) were used to characterize the adsorption materials. The adsorption properties of Cu^2+ were measured by atomic absorption spectroscopy. The results showed that polyethyleneimine and chitosan molecules were successfully cross-linked. The adsorption performance analysis showed that the kinetics of adsorption met the pseudo-second-order kinetics model and the equilibrium adsorption capacity was 81.97 mg/g.

关 键 词：壳聚糖 聚乙烯亚胺 吸附 

分 类 号：O636.1[理学—高分子化学]