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- Title
The effect of varying carboxylic-group content in reduced graphene oxides on the anticorrosive properties of PMMA/reduced graphene oxide composites.
- Authors
Chang, K. C.; Ji, W. F.; Li, C. W.; Chang, C. H.; Peng, Y. Y.; Yeh, J. M.; Liu, W. R.
- Abstract
We present comparative studies on the effect of varying the carboxylic-group content of thermally reduced graphene oxides (TRGs) on the anticorrosive properties of as-prepared poly(methyl methacrylate) (PMMA)/TRG composite (PTC) coatings. TRGs were formed from graphene oxide (GO) by thermal exfoliation. The as-prepared TRGs were then characterized using Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). Subsequently, the PTC materials were prepared via a UV-curing process and then characterized using FTIR spectroscopy and transmission electron microscopy (TEM). PTC coatings containing TRGs with a higher carboxylic-group content exhibited better corrosion protection of a cold-rolled steel electrode that those with a lower carboxylic-group content. This is because the well-dispersed TRG with a higher carboxylic-group content embedded in the PMMA matrix effectively enhances the oxygen barrier properties of the PTC. This conclusion was supported by gas permeability analysis.
- Subjects
CORROSION &; anti-corrosives; POLYMETHYLMETHACRYLATE; CARBOXYLIC acids; GRAPHENE oxide; COMPOSITE materials; FOURIER transform infrared spectroscopy; X-ray photoelectron spectroscopy; TRANSMISSION electron microscopy
- Publication
Express Polymer Letters, 2014, Vol 8, Issue 12, p908
- ISSN
1788-618X
- Publication type
Article
- DOI
10.3144/expresspolymlett.2014.92