Surface Energy Analysis of Carbon Fibers and Films

Abstract
Amorphous and graphitic carbon fibers and film surfaces are characterized by wettability measurements and surface energy analysis which isolate the (London-d) dispersion γd svand (Keesom-p) polar γp sv contribution to solid-vapor surface tension γsvd sv + γp sv Graphitized carbon fibers which are surface treated to provide strong bonding to polar matrix resins show consistent strong polar contributions to total surface tension with γd svsv ≃ γp svsv ≃ 0.50. Amorphous carbon films prepared for biological implant applications display dominant dispersion character in surface energy with γd svsv ≃ 0-74 to 0.95 and γp svsv ≃ 0.05 to 0.24.

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