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研究生： 陳志城
Jhih-Cheng Chen
論文名稱： 高吸濕性微生物纖維素之製備及性質研究
Preparation and Properties of the High Water-uptake Bacterial Cellulose
指導教授： 許應舉
Ying-Gev Hsu
口試委員: 林河木
Ho-Mu Lin
陳耿明
Keng-Ming Chen
王英靖
Ing Jing Wang
古振安
none
學位類別： 碩士
Master
系所名稱： 工程學院 - 材料科學與工程系
Department of Materials Science and Engineering
論文出版年： 2010
畢業學年度： 98
語文別： 中文
論文頁數： 48
中文關鍵詞： 微生物纖維 、接枝改質 、平衡持水重 、保水率
外文關鍵詞： Bacterial cellulose, grafting modification, equilibrium water content, water retention value
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  •  上一筆

    • 本研究將微生物纖維素(Bacterial cellulose, BC)利用化學接枝改質方式，以維持或增加其孔洞結構，使其吸濕能力提升；將聚乙二醇甲醚 ( poly(ethylene glycol) methyl ether, MPEG ) 依序與琥珀酸酐(succinic anhydride, SA)、SOCl2反應得到接枝劑 MPEG-O-(C=O)-CH2CH2-COCl (以MPEG-COCl稱之)，MPEG-COCl再與BC之OH進行反應製備成接枝型改質BC─BC-g-MPEG。BC-g-MPEG分別以FT-IR鑑定其化學構造、以SEM及X-ray觀察、分析其形態及微結構、以萬能拉力機測試其拉伸強度與斷裂伸度。以測定其平衡持水重(equilibrium water content, EWC)與保水率(water retention value, WRV)來評估其吸濕能力。

    The high water–uptake bacterial cellulose (BC) was prepared by grafting the BC with grafting agent such as MPEG-O-(C=O)-CH2CH2- COCl (MPEG-COCl) at the basic condition to maintain or increase the internal pore structure of the BC. The originally compact packed chain in BC was broken via grafting reaction, leading to the enhancement of the movability and the hydrophile of the modified BC─BC-g-MPEG. The BC-g-MPEG thus formed could increase water-uptake after dipping in the water. The modified BC were characterized by different techniques, namely FT-IR, SEM, X-ray, water sorption assays (equilibrium water content, EWC and water retention value, WRV ) and tensile tests.

    中文摘要………………………………………………………………….I 英文摘要………………………………………………………………...II 目錄……………………………………………………………...…….. III 附圖索引………………………………………………………...……... V 附表索引……………………………………..……………………....... VI 一、 前言…………………………………………………….1 二、 文獻回顧……………………………………………….4 三、 基本原理…………………………………………….....8 3-1 BC表面改質…..……………………………………………...8 四、 實驗………………………………………………….....9 4-1 實驗藥品......................................................................................9 4-2 儀器與設備................................................................................11 4-3 實驗方法....................................................................................12 4-4-1 無水THF製備……………………………………….12 4-4-2 BC-前處理…………………………………………....12 4-4-3 BC-膨潤處理…………………………………………13 4-4-4 BC之接枝改質…………………………………….....13 4-4-5 BC之性質分析與測試………………………………16 五、 結果與討論...................................................................18 5-1 BC接枝改質………………..…………..................................18 5-2 改質BC之表面微結構分析....................................................23 5-3 X-ray結晶度分析………........................................................25 5-4 BC吸濕特性分析……………................................................26 5-5 原位與接枝改質之BC (ND與FD-BC)WRV比較………...36 5-6 接枝改質之BC機械特性分析………………………………37 六、 結論...............................................................................39 七、 參考文獻.......................................................................41

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