English  |  正體中文  |  简体中文  |  Items with full text/Total items : 49287/83828 (59%)
Visitors : 7155668      Online Users : 55
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/37035


    Title: 利用鄰苯二甲酸酐修飾幾丁聚醣的反應研究
    Authors: 方裕榮, 董崇民;Don, Trong-ming
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: 幾丁聚醣;鄰苯二甲酸酐;Chitosan;Phthalic anhydride
    Date: 2008
    Issue Date: 2010-01-11 12:09:20 (UTC+8)
    Publisher: 新竹市:清華大學
    Abstract: 本研究是將幾丁聚醣溶於甲酸溶劑中,再加到N,N-二甲基甲醯胺與鄰苯二甲酸酐的溶液系統中,進行均相的化學反應修飾,利用鄰苯二甲酸酐與幾丁聚醣的胺基反應,藉此改善其有機溶劑溶解性,再利用幾丁聚醣上的氫氧基,來作進一步的化學接枝改質。針對產物作結構分析,結果顯示在高溫反應下,幾丁聚醣確實與鄰苯二甲酸酐有化學反應,且隨著酸酐量的增加而有轉化率增加的趨勢。反應後之產物可溶於如N,N-二甲基甲醯胺等有機溶劑。
    In this study, chitosan was dissolved in formic acid and modified with phthalic anhydride in N,N-dimethylformamide(DMF) solution, through the reaction of amino group with anhydride group. In this way, chitosan can be dissolved in organic solvent. After reaction, the available hydroxyl group in the chitosan can be further used for grafting synthetic polymers onto chitosan chains. The result showed that the degree of substitution increased with the added amount of phthalic anhydride. In addition, the modified chitosan could be dissolved in several organic solvents, for example, N,N-dimethylformamide.
    Relation: 2005高分子聯合會議---第28屆高分子研討會94年國科會高分子學門研究成果發表會94高分子學會年會論文集,4頁
    Appears in Collections:[化學工程與材料工程學系暨研究所] 會議論文

    Files in This Item:

    There are no files associated with this item.

    All items in 機構典藏 are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback