A new approach for preparing chitosan fibers from a LiOH/urea solvent system

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• 作者：Youliang Li ; Pengyu Zhuang ; Yufei Zhang ; Zhengke Wang ; Qiaoling Hu
• 关键词：Fiber technology ; Biomaterials ; New approach ; Chitosan fiber ; Dense structure ; Mechanical property
• 刊名：Materials Letters
• 出版年：2012
• 出版时间：1 October, 2012
• 年：2012
• 卷：84
• 期：Complete
• 页码：73-76
• 全文大小：467 K

文摘

This study introduces a new approach of preparing chitosan fibers on a laboratory scale, which employs 7.2 wt % LiOH/6.0 wt % urea solvent system. The results from Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis and universal testing machine indicate that the new approach does not change the chemical structure of chitosan. The approach performs better in forming dense structure in the cross section of chitosan fiber and improves thermal stability and mechanical properties of chitosan fibers. The tensile strength of the novel chitosan fibers reached 162.57¡À4.3 MPa, which was increased by 21.6 % compared with that of chitosan fibers prepared by conventional approach.