高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (6): 868.

• 研究论文 • 上一篇    下一篇

壳聚糖的辐射效应的研究(Ⅱ)——辐射引起的某些化学变化

赵文伟1, 于黎1, 钟晓光1, 张月芳1, 孙家珍1, 王强2   

  1. 1. 中国科学院长春应用化学研究所, 长春 130023;
    2. 东北师范大学分析测试中心
  • 收稿日期:1992-05-19 修回日期:1992-09-27 出版日期:1993-06-24 发布日期:1993-06-24
  • 通讯作者: 赵文伟
  • 基金资助:

    中国科学院上海原子核研究所辐射化学开放实验室资助

Studies on Radiation Effect of Chitosan (Ⅱ)--Some of the Chemical Changes Induced by Irradiation

ZHAO Wen-Wei1, YU Li1, ZHONG Xiao-Guang1, ZHANG Yue-Fang1, SUN Jia-Zhen1, WANG Qiang2   

  1. 1. Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, 130022;
    2. Central of Analyses and Tests, Northeast Normal University
  • Received:1992-05-19 Revised:1992-09-27 Online:1993-06-24 Published:1993-06-24

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摘要： 壳聚糖分子中的脱乙酰基单元比乙酰化单元更易被高能辐射破坏。红外光谱的研究结果表明,羟基基团的吸收强度随辐射强度的增加而增加,胺基和醚键的吸收强度则下降。壳聚糖辐照后并未发现有羰基形成。壳聚糖在辐照作用下除了胺基的变化外,主要通过苷键的断裂降解。

关键词: 壳聚糖, 辐射效应, 胺基, 热量分析, 红外光谱

Abstract: Partially deacetylated chitosan powders were subjected to γ-ray irradiation in the controlled volume of air.Thermogravimetric analyses indicate that the thermal stability of chitosan decreases after irradiation.The results of infrared spectrum investigation show that hydroxyl group increases with the increase of radiation dose while C-O-C group decreases, and the deacetylated moiety is more sensitive to irradiation than acetylated moiety.No evidence for carbonyl formation was observed.Main chain scission and reactions of amino group are the main chemical changes of chitosan under irradiation.

Key words: Chitosan, Radiation effect, Amino group, Thermogravimetric analysis, Infrared spectrum

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