On the reactivity, structure, and porosity of carbon fibers and fabrics

Abstract Carbon fibers and fabrics have been used extensively in fabricating carbon composites. From the perspective of the fiber, the adhesion between a fiber and matrix is controlled by the type of fiber, its heat-treatment temperature and its surface properties. This article summarizes these properties on selected carbon fibers and fabrics; including the total surface area as determined by gas adsorption at 77 K, the active surface area as determined by oxygen chemisorption at 573 K and microporosity as measured by CO2 adsorption at 298 K. The carbonized polyacrylonitrile (PAN) fiber and the graphitized rayon fabric as well as pitch fiber have small surface area (

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