Composite of cyclic olefin copolymer with low graphene content for transparent water-vapor-barrier films

doi:10.1016/j.carbon.2015.04.006

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Title:	Composite of cyclic olefin copolymer with low graphene content for transparent water-vapor-barrier films
Authors:	Lai, Cheng-Lee Fu, Ywu-Jang Chen, Jung-Tsai Wang, Da-Ming Sun, Yi-Ming Huang, Shu-Hsien Hung, Wei-Song Hu, Chien-Chieh Lee, Kueir-Rarn
Contributors:	環境工程與科學系
Keywords:	Super gas barrier Mechanical-properties High-performance Nanocomposites Oxide Membranes Strength Encapsulation Permeability Dispersion
Date:	2015-08
Issue Date:	2016-04-19 19:03:36 (UTC+8)
Publisher:	Pergamon-Elsevier Science Ltd
Abstract:	This study fabricates a transparent cyclic olefin copolymer (COC)/thermally reduced graphene oxide (TRGO) composite film with low content of TRGO, which exhibits high water vapor barrier properties. With only 0.06 wt% (0.028 vol%) TRGO, the COC/TRGO composite film reduces the water vapor permeability by similar to 21%. The amount of TRGO in this work is 10-100 times lower than that in other polymer/clay or polymer/graphene composites that reduce the water vapor permeability at the same percentage. Low TRGO content has benefits of fabricating a film with low cost, high transparency, and truly excellent flexibility. The water vapor permeabilities of COC/TRGO composites are much lower than those predicted by Cussler or Nielsen model because of the significant rigidification of COG chains near TRGOs. The COC/TRGO composite film was annealed at different temperatures and then surface modified with amphiphilic polymer to further improve its barrier performance. By treating the film with 0.06 wt% TRGO, the water vapor permeability is greatly reduced by similar to 65%. (C) 2015 Elsevier Ltd. All rights reserved.
Relation:	Carbon, v.90, pp.85-93
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

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