Portal de Periódicos da CAPES

The effect of varying carboxylic-group content in reduced graphene oxides on the anticorrosive properties of PMMA/reduced graphene oxide composites

2014; Budapest University of Technology and Economics; Volume: 8; Issue: 12 Linguagem: Inglês

10.3144/expresspolymlett.2014.92

1788-618X

Kung‐Chin Chang, W. F. Ji, C. W. Li, C. H. Chang, Ying Peng, Jui‐Ming Yeh, W. R. Liu,

Conducting polymers and applications

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.