中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/92074
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 78937/78937 (100%)
造访人次 : 39880396      在线人数 : 1272
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/92074


    题名: 鈉、鉀之四牙配體錯合物用於內酯之開環聚合反應;Sodium and potassium tetradentate ligand complexes are used in the ring-opening polymerization of lactones
    作者: 吳成修;Wu, Chang-Siou
    贡献者: 化學學系
    关键词: 開環聚合反應;內酯;ring-opening polymerization;lactone
    日期: 2023-08-15
    上传时间: 2024-09-19 14:49:11 (UTC+8)
    出版者: 國立中央大學
    摘要: 本研究成功合成出具有四個配位點的氨基配位基,並且與叔丁醇鈉和叔丁醇鉀反應,合成出錯合物Na-1-tBuOH、Na-1、Na-1-nBuOH、K-1-tBuOH、K-2。這些催化劑對ε-Caprolactone、L-Lactide及γ-Valerolactone都具有相當高的活性。K-1-tBuOH對ε-Caprolactone單體的催化中,在分子數比為單體:催化劑:起始劑=100:1:1的催化條件下,4分鐘的反應時間內可達到96%的轉換率,且有優異的分子量分布度(PDI=1.13)。Na-1-tBuOH活性較略低於K-1-tBuOH,於單體:催化劑:起始劑=100:1:1條件下,反應16分鐘可達98%轉換率,但分子量分布度較鉀略有提升 (PDI=1.09)。因此,此類催化劑對於開環聚合反應的應用具有相當高的潛力。;This study successfully synthesized amino ligands with four coordination sites and reacted them with sodium tert-butoxide and potassium tert-butoxide, resulting in the formation of the corresponding coordination complexes Na-1-tBuOH, Na-1,Na-1-nBuOH,Na-2-tBuOH, K-1-tBuOH, and K-2. These five catalysts exhibited high activity towards ε-Caprolactone, L-Lactide, and γ-Valerolactone. Among them, K-1-tBuOH showed excellent catalytic activity for ε-Caprolactone monomer under the conditions of monomer:catalyst:initiator molar ratio of 100:1:1 and a reaction time of 4 minutes, achieving a conversion rate of 96% with a remarkable molecular weight distribution (PDI=1.13). Na-1-tBuOH exhibited slightly lower activity than K-1-tBuOH, reaching a conversion rate of 98% after 16 minutes of reaction time under the same conditions, but with a slightly improved molecular weight distribution (PDI=1.09) compared to potassium. Therefore, these types of catalysts show great potential for applications in ring-opening polymerization reactions.
    显示于类别:[化學研究所] 博碩士論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML1检视/开启


    在NCUIR中所有的数据项都受到原著作权保护.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 隱私權政策聲明