CIESC Journal ›› 2013, Vol. 64 ›› Issue (9): 3437-3445.DOI: 10.3969/j.issn.0438-1157.2013.09.048

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Preparation and properties of spherical chitosan hydrogel crosslinked with L-cystine for Cu2+ adsorption

WANG Sisi, YING Xiaoguang, ZHANG Weiying, LI Xiao   

  1. School of Chemistry & Chemical Engineering, Fuzhou University, Fuzhou 350108, Fujian, China
  • Received:2013-01-03 Revised:2013-03-26 Online:2013-09-05 Published:2013-09-05
  • Supported by:

    supported by Fujian Education Department of Science Foundation Class A,China(JA11021),China Postdoctoral Science Foundation Funded Project(2012M511439)and the Science and Technology Development Foundation of Fuzhou University(2012-XQ-6).

L-胱氨酸交联球形壳聚糖凝胶的制备与Cu2+吸附性能

王思思, 英晓光, 张卫英, 李晓   

  1. 福州大学化学化工学院, 福建 福州 350108
  • 通讯作者: 英晓光
  • 作者简介:王思思(1988- ),女,硕士研究生。
  • 基金资助:

    福建省教育厅科技项目(JA11021);中国博士后科学基金面上资助项目(2012M511439);福州大学科技发展基金项目(2012-XQ-6)。

Abstract: Spherical chitosan hydrogel crosslinked with L-cystine(L-CYS)was synthesized by the dropping method.Chemical structure characterization of the product was performed with FTIR,13C NMR and SEM.The results showed that chitosan was amidated and esterified with L-cystine,resulting in internal porous structure.The disulfide bond on L-CYS contributed to Cu2+ adsorption.The adsorption capacity for Cu2+ reached 72.96 mg·g-1,which was close to that of the uncrosslinked chitosan hydrogel. But the anti-swelling property was better than the latter.

Key words: chitosan, L-cystine, crosslink, adsorption, hydrogel

摘要: 以L-胱氨酸(L-CYS)作为交联剂,利用滴液成球法制备交联球形壳聚糖凝胶,用傅里叶红外光谱、13C NMR、扫描电镜对产物进行了表征,结果表明L-CYS与壳聚糖发生了酰胺化及酯化反应,并且制得的凝胶内部存在着疏松的网络状大孔。交联剂L-CYS中的二硫键有助于二价铜离子的吸附。以L-CYS交联得到的球形壳聚糖凝胶对Cu2+的吸附量达到了72.96 mg·g-1,接近于未交联的球形壳聚糖凝胶的吸附量,而耐溶胀性优于未交联的壳聚糖凝胶。

关键词: 壳聚糖, L-胱氨酸, 交联, 吸附, 凝胶

CLC Number: