4.7 Article

Surface free energy of graphene-based coatings and its component elements

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INORGANIC CHEMISTRY COMMUNICATIONS
卷 153, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.inoche.2023.110855

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Graphene; Coating; Surface free energy; Dispersive component; Polar component

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There has been an increase in research on the surface free energy of low-dimensional materials in recent years. Graphene-based composites are becoming increasingly popular in industry as coating materials, and the surface free energy of graphene plays a crucial role in its adherence to supporting substrates. This article critically evaluates the surface free energy of coatings made from graphite base, graphene, and graphene oxide based on contact angle data, using various techniques such as the Zisman, Neumann, Fowkes, Owens-Wendt-Fowkes, and van Oss, Chaudhury, Good method. The findings provide important information for the development of graphene-based composites in the coatings sector.
There has been an increase in research into the surface free energy of low-dimensional materials in recent years. Graphene-based composites are increasingly popular in industry as coating materials. The surface free energy of graphene is crucial for interfacial adherence to supporting substrates. In this article, the surface free energy of coatings made of graphite base, graphene, and graphene oxide is evaluated critically based on the provided contact angle data using a variety of techniques, such as the Zisman, Neumann, Fowkes, Owens-Wendt-Fowkes, and van Oss, Chaudhury, Good method. It was found that the average surface energies of graphene, graphene oxide, and graphite were respectively 44.8 +/- 14.7, 47.9 +/- 7.2, and 53.6 +/- 2.1 mJ.m(-2). The dispersive components of graphene, graphene oxide, and graphite are 38.4 +/- 9.5, 38.3 +/- 4.0, and 50.6 +/- 3.6 mJ.m(-2), respectively, while the polar components are 4.8 +/- 4.9, 9.9 +/- 4.2, and 2.8 +/- 1.5 mJ.m(-2). The current analysis can be used to develop graphene-based composites for the coatings sector.

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