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

KungChin Chang | Zendy; W. F. Ji | Zendy; C. W. Li | Zendy; C. H. Chang | Zendy; Ying Peng | Zendy; JuiMing Yeh | Zendy; W. R. Liu | Zendy

Open Access

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

Author(s) -

KungChin Chang,

W. F. Ji,

C. W. Li,

C. H. Chang,

Ying Peng,

JuiMing Yeh,

W. R. Liu

Publication year - 2014

Publication title -

express polymer letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.695

H-Index - 72

ISSN - 1788-618X

DOI - 10.3144/expresspolymlett.2014.92

Subject(s) - graphene , materials science , x ray photoelectron spectroscopy , fourier transform infrared spectroscopy , oxide , exfoliation joint , composite material , curing (chemistry) , oxygen permeability , composite number , carboxylic acid , chemical engineering , polymer chemistry , nuclear chemistry , oxygen , organic chemistry , metallurgy , nanotechnology , chemistry , engineering

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

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