高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (3): 528.

• 论文 • 上一篇    下一篇

原位沉析法制备壳聚糖棒材的研究

胡巧玲, 钱秀珍, 李保强, 沈家骢   

  1. 浙江大学高分子复合材料研究所, 杭州 310027
  • 收稿日期:2002-04-29 出版日期:2003-03-24 发布日期:2003-03-24
  • 通讯作者: 胡巧玲(1957年出生),女,副教授,主要从事医用高分子材料的研究.E-mail:huql@zju.edu.cn E-mail:huql@zju.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:50173023)资助

Studies on Chitosan Rods Prepared by in situ Precipitation Method

HU Qiao-Ling, QIAN Xiu-Zhen, LI Bao-Qiang, SHEN Jia-Cong   

  1. Institute of Polymer Composite Material, Zhejiang University, Hangzhou 310027, China
  • Received:2002-04-29 Online:2003-03-24 Published:2003-03-24

摘要: 以壳聚糖凝胶膜为模板,将壳聚糖溶液与NaOH凝固液隔离,利用膜渗透原位沉析法制备了高性能的壳聚糖棒材(d=4.5mm),其弯曲强度、弯曲模量和剪切强度分别为92.4MPa,4.1GPa和36.5MPa.扫描电子显微镜(SEM)分析结果表明,原位沉析法制备的壳聚糖棒材具有同心筒状层叠结构,并对其成型机理进行了探讨.

关键词: 壳聚糖, 原位沉析法, 壳聚糖棒材, 力学强度

Abstract: A novel and simple method, in situ precipitation, was developed to prepare a high performance chitosan rod which is a potential material as the internal fixation of bone fracture, by using CS coagulation membrane as model to separate CS solution from 5% NaOH coagulation solution. CS rod(d=4.5 mm) with bending strength, bending modulus and shear strength of 92.4 MPa, 4.1 GPa and 36.5 MPa respectively was obtained when molecular weight(Mη) of CS was 56.3×104 and the degree of deacetylate was 91%. SEM observed shows that CS rods prepared by in situ precipitation method has a concentric structure. The mechanism for preparing the gel rod was also discussed in this paper.

Key words: Chitosan, In situ precipitation method, Chitosan rods, Mechanical strength

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