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

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (6): 868.

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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. 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

Abstract

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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ZHAO Wen-Wei, YU Li, ZHONG Xiao-Guang, ZHANG Yue-Fang, SUN Jia-Zhen, WANG Qiang. Studies on Radiation Effect of Chitosan (Ⅱ)--Some of the Chemical Changes Induced by Irradiation[J]. Chem. J. Chinese Universities, 1993, 14(6): 868.

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

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