FT-IR of Low-temperature-treated Carbons

Abstract

Evolution of FT-IR spectrum for three kinds of graphitizing carbon precursors (bulk mesophase samples of purified petroleum pitch, quinoline soluble component of coal tar pitch and polyvinyl chloride pitch) by heat treatment has been investigated. The precursors were heat-treated at temperatures 430-900°C. Drastic change in whole spectrum is observed at a characteristic heat treatment temperature TF for each precursor. TF depends on the starting material of the precursor, and can be correlated to the graphitizability of the carbon derived from the precursor.