Preparation and Characterization of Acylated Chitosan |
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Authors: | LI Ming-chun LIU Chao XIN Mei-hua Zhao Huang WANG Min FENG Zhen SUN Xiao-li |
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Institution: | College of Material Science and Engineering, Huaqiao University, Quanzhou 362011, P. R. China |
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Abstract: | Fully acylated chitosan and N, N-diacyl chitosan were prepared. The products were characterized by elemental analysis, FTIR and 1H NMR. The experimental results indicate that the average degree of acylation depends on the volume ratio of pyridine to chloroform in the reaction medium, the chain length of the acylation agent used, and the molecular weight of chitosan raw materials. The XRD measurements were carried out for pure chitosan, fully acylated chitosan and N, N-diacyl chitosan to verify the crystallinity change caused by the acylation. |
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Keywords: | Chitosan Acylation Degree of substitution XRD |
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