具單咪唑鹽與雙咪唑鹽之 陰離子交換膜之開發與製備

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/76686

Title:	具單咪唑鹽與雙咪唑鹽之陰離子交換膜之開發與製備
Authors:	潘軒庭;Pan, Syuan-Ting
Contributors:	化學學系
Keywords:	燃料電池;陰離子交換膜;咪唑鹽;fuel cell;ROMP;RAFT;anion exchange membrane;imidazolium
Date:	2018-07-26
Issue Date:	2018-08-31 11:33:19 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文以開發含有親水端 NB 新單體，並合成出一系列親水端高分子，以及改良之前 PS 系列高分子合成路徑及方法。第一系列 PNB-CIm-Ph-NIm 以 PNB-CIm 為基礎，以苯環作為橋梁，合成出新的親水端單體 NB-CIm-Ph-Cl 單體，接著再以不同的 ROMP 聚合手法，合成出 random copolymer R-PNB-CIm-Ph-NIm，及 diblock copolymer D-PNB-CIm-Ph-NIm，以同一個單體 NB-CIm 為架構再外掛一個離子交換集團 imidazolium，在相同的親水端比例下，能有較高的 IEC 值，期待有不錯的導電度，但此薄膜泡水後會過度吸水膨脹破裂，目前已送至工研院成膜優化中。第二系列 PS-C4-NIm 則是改良之前的 PS-NIm 為主，利用 RAFT 並以 diblock 的聚合手法，先聚疏水端單體 VB-O4 及交聯試劑 DVB-O4，再加入 4-vinylbenzyl chloride 共聚，合成高分子主幹後，最後再加入 methyl-imidazole 進行 SN2 取代反應，得到目標高分子產物。其中將原本的疏水端單體 styrene 再外掛長碳鏈後，進而改善薄膜的柔軟度。目前 PS-C4-NIm-50 在室溫下薄膜導電度最高可達 0.043 S/cm。 ;In this study, two series of anion exchange membranes were developed. In the first series, the monomer NB-CIm-Ph-Cl was synthesized from NB-CIm and the polymer PNB-CIm-Ph-Cl was prepared via ring-opening metathesis polymerization (ROMP) of hydrophilic NB-CIm-Ph-Cl and hydrophobic NB-Hex. The final polymer PNB-CIm-Ph-NIm was then prepared via imidazolation from PNB-CIm-Ph-Cl. Having two imidazolium groups in each hydrophilic unit, the PNB-CIm-Ph-NIm is expected to exhibit high ionic conductivity. In the second series, The PS backbone was prepared via reversible addition fragmentation chain transfer (RAFT) polymerization of 4-vinylbenzyl chloride and hydrophobic VB-O4 and cross-linker DVB-O4. Via changing the equivalence of these VB monomers, the hydrophilic and hydrophobic ratio of the PS copolymer can be controlled. Then the final polymer, PS-C4-NIm, was prepared via imidazolation of PS-C4-Cl. Currently, PS-C4-NIm-50 shows high ionic conductivity up to 0.043 S/cm at room temperature.
Appears in Collections:	[Graduate Institute of Chemistry] Electronic Thesis & Dissertation

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