Performance of Plasma Modified Carbon Fiber Absorbents

Abstract

This research produces a carbon fiber absorbent, using rayon knitted fabric as the precursor and putting it through oxidization, carbonization, and activation processes in a semi-open high temperature furnace, then discussing its absorption characteristics. During the experiment, plasma modification is implemented, and its absorbing effectiveness before and after plasma modification is evaluated through absorption testing by a special toxic gas and SEM surface observations. The results show that a CO₂ gas plasma induced reaction of monomer (chromium ion) with the substrate has a better effect on plasma modification. After plasma modification, the absorption of carbon monoxide by the carbon absorbent is about eight times better than that prior to the modification.

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