電活性聚亞醯胺薄膜、塗料及電噴灑粒子之製備與性質探討

Preparation and Properties of Electroactive Polyimide Membranes, Coatings and Electrospray Particles

黃冠燁(Kuan-Yeh Huang)

指導教授 ： 葉瑞銘

中原大學/理學院/化學研究所/博士(2009年)

https://doi.org/10.6840/cycu200900921

摘要

本論文中，利用氧化偶合一步法合成穩定的半氧化半還原態之胺基封端苯胺三聚體(amine-capped aniline trimer; ACAT)並選用非共平面之二酸酐(2,2-bis[4-(dicarboxyphenoxy)phenyl]propane dianhydride，BSAA)進行聚亞醯胺的合成，必需強調的特點是本研究首次合成一重量平均分子量達約140,000之高強度電活性聚亞醯胺薄膜，並以動態機械分析(DMA)儀確認其儲存模量(storage modulus)在室溫可達約~ 3 GPa，較大部份文獻發表之聚亞醯胺約強50%之強度，成功克服以往電活性聚亞醯胺聚合度不佳，不易成膜之缺陷，並導入4,4-oxydianiline (ODA) 製備出一系列不同比例的電活性聚亞醯胺及其共聚物，探討具電活性共軛鏈段之ACAT對材料在光學性質、電活性、熱性質、機械性質與電性之基本特性變化；進一步利用氣體滲透分析儀及電化學腐蝕量測技術來系統性的探討電活性聚亞醯胺應用於氣體分離薄膜及金屬(如:冷軋鋼)防腐蝕塗料之實際應用效益，並進一步利用靜電噴灑技術製備一系列新型電活性聚亞醯胺微粒子結構，探討溶液濃度(Solution concentration)、驅動電壓(applied voltage)、噴灑距離(distance)及噴灑速率(flow rate)對所形成電活性聚亞醯胺微粒粒徑之影響。

關鍵字

防腐蝕 ； 氣體分離 ； 聚亞醯胺 ； 苯胺三聚體

並列摘要

In this study, a non-coplanar dianhydride molecule, 2,2-bis[4-(dicarboxyphenoxy)phenyl]propane dianhydride (BSAA) was reacted with emeraldine base (EB) form of amine-capped aniline trimer (ACAT) units to give mechanically enhanced electroactive polyimide (EPI) with higher weight-average molecular weight of ~ 140,000 by thermal and chemical imidization. It should be noted that the EPI (BSAA-ACAT) membrane exhibited storage modulus of ~ 3 GPa at room temperature based on the dynamic mechanical analysis (DMA). Concentration effect of conjugated diamine segment, (i.e., ACAT) on the physical (e.g., mechanical, and thermal) properties of as-prepared corresponding EPIs, another non-conjugated diamine unit (i.e., 4,4′-oxydianiline, ODA) was incorporated into EPI (BSAA-ACAT) for systematically comparative studies. Gas separation, and anticorrosive properties of series as-prepared novel electroactive aromatic polyimide, in the form of membrane and coating, were also systematically investigated and compared based on the gas permeability analysis (GPA) and electrochemical corrosion measurements, respectively. Effect of parameters of electro-spray technique (such as solution concentration, applied voltage, distance and feeding rate) on the particle size of electrospray electroactive polyimide micro-particles has also been systematically investigated.

並列關鍵字

Keywords: amine-capped aniline trimer ； corrosion ； polyimide. gas separation

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