English  |  正體中文  |  简体中文  |  Items with full text/Total items : 51931/87076 (60%)
Visitors : 8493212      Online Users : 123
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/987654321/60220

    Title: 幾丁聚醣-聚丙烯酸奈米顆粒合成與pH緩衝性質研究
    Authors: 莊仲揚;董崇民;邱文英
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: 幾丁聚醣;丙烯酸;奈米顆粒;pH緩衝;型態;Chitosan;Acrylic acid;Nanoparticle;PH-buffer;Morphology
    Date: 2009
    Issue Date: 2011-10-13 13:29:31 (UTC+8)
    Publisher: 臺北市:大同大學
    Abstract: 本研究以幾丁聚醣為模版,利用丙烯酸單體中的羧酸基與幾丁聚醣胺基發生離子作用現象,以模版聚合方式合成幾丁聚醣-聚丙烯酸奈米顆粒,探討在不同幾丁聚醣/丙烯酸比例所合成之奈米顆粒之型態是否有發生變化。並研究在不同pH值溶液的環境下,幾丁聚醣-聚丙烯酸奈米顆粒之pH緩衝能力。實驗發現,在固定丙烯酸含量之下,隨著幾丁聚醣比例增加,合成之奈米顆粒粒徑會有不同的變化,結構分析發現,奈米顆粒中的幾丁聚醣與聚丙烯酸之間有聚電解質錯合物結構產生,並且有幾丁聚醣/聚丙烯酸共聚物在聚合反應中生成。pH緩衝實驗發現,所合成之奈米顆粒具備pH緩衝能力,可將酸性溶液以及鹼性溶液的pH值,往pH=7中性溶液的方向做調控,改變不同幾丁聚醣/丙烯酸比例,合成奈米顆粒之pH緩衝能力與作用範圍也有所不同。
    Chitosan (CS)/Poly(acrylic acid) (PAA) nanoparticles were synthesized using potassium persulfate to initiate the polymerization of acrylic acid in chitosan solution. After 2 hours of reaction at 80 degree C, CS-PAA nanoparticles were obtained. Transmittance electronic microscope (TEM) was used to observe the morphology of nanoparticles and the particle size distribution, while FTIR and 13C solid state NMR was used to analyze the structure of CS-PAA nanoparticles. The morphology and surface charge of the nanoparticles were found to vary with the feeding molar ratio of CS to AA (glucosamine unit/acrylic acid). From the FTIR and solid state 13C-NMR spectra, we found that CS-co-PAA existed in the CS-PAA nanoparticles structure. In addition, the pH-buffering property of CS-PAA nanoparticles was also studied.
    Relation: 2009中華民國高分子學會年會暨軟性電子國際研討會&國科會高分子學門成果發表會論文集=Proceedings of 2009 Annual Meeting of the Polymer Society,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