English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 51776/87004 (60%)
造訪人次 : 8385771      線上人數 : 105
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/34904


    題名: 以聚麩胺酸鹽製備奈米金及其對聚胜肽結構之影響研究
    其他題名: The study of gold nanoparticles prepared by poly-glutamic acid salts and their effects on the structure of the poly-peptide
    作者: 陳景弘;Chen, Jin-hong
    貢獻者: 淡江大學化學工程與材料工程學系碩士班
    張朝欽;Chang, Chao-ching
    關鍵詞: 奈米金;聚麩胺酸;聚胜肽結構;gold nanoparticle;poly-glutamic acid;the structure of the poly-peptide
    日期: 2007
    上傳時間: 2010-01-11 05:45:22 (UTC+8)
    摘要: 本研究著重於以聚胜肽高分子製備高分子-奈米金奈米複合材料的方法。研究中以化學還原法,成功在水相中用聚麩胺酸鹽直接還原金鹽並穩定所製備之奈米金顆粒,製備高濃度的奈米金水溶液。研究中證實聚麩胺酸鹽兼具還原劑與保護劑的效果,其分子量的大小會影響顆粒的大小。
      藉由以FTIR與NMR檢測分析聚麩胺酸鹽在製備奈米金的過程中,反應前後其結構不變。藉由TEM觀察奈米金粒子的粒徑得知為30nm、20nm、10nm、30nm分別為以高、中、低分子量的聚麩胺酸鈉鹽及聚麩胺酸鈣鹽所還原出來的奈米金顆粒。另外,將複合材料進行TGA與DSC等熱分析測試,以測得材料的熱裂解溫度(380℃)等熱性質。
      含奈米金樣品的紫外光可見光吸收光譜的最大吸收位置則位於 520~540 nm 之間。另外,聚麩胺酸鹽高分子在還原金鹽製備奈米金之後,其裂解溫度不變。
    The present work focuses on the synthesis method which use poly-peptide polymer to prepare the nano-gold nanocomposites. HAuCl4 was reduced and stabilized by poly-peptide polymer directly. Besides, we prepared the dense solution of nano-gold under aqueous phase successfully. This study also confirms that poly-glutamic acid salt plays the role of reducing and protecting agent. Therefore, the molecular weight of poly-glutamic acid salt will affect the particle size distribution.
    Moreover, we used the FTIR and NMR to investigate and analyze the process of preparing nano-gold particles by poly-glutamic acid salt. During the whole process, the structure of poly-peptide is invariant.
    The nano-gold particle size distribution were 30, 20, and 10 nm which were prepared by the high, middle, and low molecular weight of poly-glutamic acid sodium salt and poly-glutamic acid calcium salt from TEM observation, respectively. Furthermore, TGA and DSC were used to measure the degradation temperature (380℃) and the thermal property of the material.
    The maximum of absorbance wavelength (λmax ) of the prepared nanocomposites were located at 520~540nm by UV-Vis measurement. On the other hand, the thermal properties of nano-gold particles which reduced by poly-glutamic acid salts doesn’t change.
    顯示於類別:[化學工程與材料工程學系暨研究所] 學位論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    0KbUnknown296檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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