A covalently cross-linked reduced functionalized graphene oxide/polyurethane composite based on Diels–Alder chemistry and its potential application in healable flexible electronics

A novel composite of reduced functionalized graphene oxide/polyurethane based on Diels–Alder chemistry was developed which could be healed microwaves with high efficiency and applied in healable flexible electronics.

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Water-based polyurethane composite anticorrosive barrier coating via enhanced dispersion of functionalized graphene oxide in the presence of acidified multi-walled carbon nanotubes

Progress in Organic Coatings ◽

10.1016/j.porgcoat.2020.105734 ◽

2020 ◽

Vol 146 ◽

pp. 105734 ◽

Cited By ~ 1

Author(s):

Li-Chao Jing ◽

Tao Wang ◽

Wei-Wei Cao ◽

Jian-Gong Wen ◽

Hui Zhao ◽

...

Keyword(s):

Carbon Nanotubes ◽

Graphene Oxide ◽

Functionalized Graphene ◽

Functionalized Graphene Oxide ◽

Polyurethane Composite ◽

Barrier Coating ◽

Water Based ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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Synthesis of Silane Functionalized Graphene Oxide and Its Application in Anti-Corrosion Waterborne Polyurethane Composite Coatings

Coatings ◽

10.3390/coatings9090587 ◽

2019 ◽

Vol 9 (9) ◽

pp. 587 ◽

Cited By ~ 8

Author(s):

Chao Chen ◽

Shicheng Wei ◽

Bin Xiang ◽

Bo Wang ◽

Yujiang Wang ◽

...

Keyword(s):

Graphene Oxide ◽

Corrosion Rate ◽

Electrochemical Impedance ◽

Composite Coatings ◽

Condensation Reaction ◽

Waterborne Polyurethane ◽

Functionalized Graphene ◽

Functionalized Graphene Oxide ◽

Polyurethane Composite ◽

Modified Graphene Oxide

In this study, novel silane functionalized graphene oxide (PVSQ-GO) composite material is synthesized through the hydrolysis condensation reaction of vinyl triethoxysilane monomers occurred at the surface of graphene oxide. Results obtained from FTIR, Raman, X-ray photoelectronic spectroscopy (XPS), XRD and TGA measurements reveal that polyvinyl sesquisiloxane microspheres adhere to graphene oxide lamellae in the form of chemical bonds. Meanwhile, it is intuitive that abundant polyvinyl sesquisiloxane microspheres stick to the surface of graphene oxide and increase the thickness of the flake. Modified graphene oxide changes from hydrophilicity to hydrophobicity were owing to the existence of polyvinyl sesquisiloxane microspheres on the surface of graphene oxide (GO). PVSQ-GO composite exhibited good dispersion in eco-friendly waterborne polyurethane coating. Electrochemical impedance spectroscopy manifested that the anti-corrosion performance of waterborne polyurethane (WPU) coating embedded at 0.5 wt.% PVSQ-GO composite improved effectively. Tafel curves reveal that 0.5 wt.% PVSQ-GO/WPU coating specimen shows the lowest corrosion rate of 8.95 × 10−5 mm/year when compared with the other coating specimens. The good anti-corrosion abilities of PVSQ-GO composite coating can be interpreted as the good compatibility between PVSQ-GO composite and waterborne polyurethane, however, the intrinsic hydrophobicity of PVSQ-GO composite is beneficial to inhibit the permeation of corrosive medium and thus slows down the corrosion rate.

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