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Freeze‐dried graphene oxide modified with trimethylhexamethylene in the mix solvent for improved anti‐corrosion property of epoxy
Author(s) -
Hou Weixin,
Gao Ya,
Wang John,
Blackwood Daniel J.,
Teo Serena
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49139
Subject(s) - epoxy , graphene , materials science , oxide , solvent , coating , curing (chemistry) , corrosion , dispersion (optics) , diamine , composite material , chemical engineering , sonication , polymer chemistry , organic chemistry , nanotechnology , chemistry , metallurgy , physics , engineering , optics
Graphene oxide (GO) reinforcement to enhance the property of epoxy has been reported many times; with most of the papers focusing on how to modify GO with different functional groups to achieve better dispersion. Here, the importance of the preparation route on the coating systems performance was investigated. It was found that a mixed polar/nonpolar solvent BuOH/xylene (3/1 vol/vol) was the best choice for forming the epoxy/GO coatings. Furthermore, it was found that when the freeze‐dried GO sonicated with the curing agent trimethylhexamethylene diamine in the mix solvent, the as‐prepared coating exhibited best performance, including better GO dispersion and hydrophobicity, higher adhesion, and anti‐corrosion property. Without any additional chemical to modify the GO, this optimized preparation route for epoxy/GO coatings will provide a guide for future similar research works, especially for the GO dispersion in nonaqueous systems.