電活性聚亞醯胺／氧化石墨烯複合薄膜氣體阻障性質研究

Electroactive Polyimide/Graphene Oxide Nanocomposite Thin Film with Improved Gas Barrier Properties

蔡美慧(Mei-Hui Tsai) ； 陳信旭(Hsin-Hsu Chen) ； 曾怡享(I-Hsiang Tseng) ； 葉瑞銘(Jui-Ming Yeh)

《技術學刊》 28卷4期 (2013/12) Pp. 229-234

摘要

本研究以胺基官能化封端苯胺三聚體（amino-capped aniline trimer，ACAT）作為二胺單體，製備具有電活性的聚亞醯胺薄膜（EPI），再混入氧化石墨烯（GO），研究GO對電活性聚亞醯胺／氧化石墨烯複合薄膜（EPI／GO）的氣體屏障特性及電化學氧化還原行為。利用ACAT，再選用非共平面之二酸酐（2,2-bis [4-(dicarboxyphenoxy) phenyl] propane dianhydride，IDPA），混入另一種二胺（4,4-oxydianiline，ODA），以N,N-dimethylacetamide（DMAc）作為溶劑進行一系列EPI薄膜的合成，並探討不同莫爾比ACAT含量下對於EPI薄膜的機械性質與氣體屏障研究。研究結果顯示加入絲綢緞般的GO奈米片，可進一步降低水氣傳輸速率（WVTR）和氧氣傳輸速率（OTR），證實在EPI薄膜中加入高長徑比（aspect ratio）的GO會迫使氣體分子擴散路徑增長，使氣體阻障性質提升。

關鍵字

電活性聚亞醯胺 ； 胺基封端苯胺三聚體（ACAT） ； 氧化石墨烯 ； 氣體阻障

並列摘要

The gas barrier properties and electrochemical redox behavior of aniline oligomer-derivated electroactive polyimide (EPI) hybrid with graphene oxide (GO) were investigated as a function of the content of amino-capped aniline trimer (ACAT) and GO. A series of EPI thin films were prepared from a non-coplanar dianhydride, [2, 2-bis [4- (dicarboxyphenoxy) phenyl] propane dianhydride] (IDPA), and two types of diamines, 4, 4'-diaminodiphenyl ether (ODA) and ACAT, in DMAc solvent. The effects of ACAT contents on the mechanical and barrier properties of EPI were investigated. In order to further reduce the water-vapor-transmission-rate (WVTR) and oxygen-transmission-rate (OTR) of EPI, silk-like GO nanosheets were incorporated with EPI. The high aspect ratio of GO successfully extends the diffusion pathway of the gas barrier in the EPI matrix and thus serves as an excellent barrier material for EPI.

並列關鍵字

electroactive polyimide ； amine capped aniline trimer (ACAT) ； graphene oxide ； gas barrier