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Composite of cyclic olefin copolymer with low graphene content for transparent water-vapor-barrier films
- Source :
- Carbon. 90:85-93
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
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 ∼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 COC 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 ∼65%.
Details
- ISSN :
- 00086223
- Volume :
- 90
- Database :
- OpenAIRE
- Journal :
- Carbon
- Accession number :
- edsair.doi...........4af1e11e55496a4e8706cf44faaef23d