Abstract
CURRENT commercial methods for converting polyacrylonitrile based textile fibre to high elastic modulus carbon fibre usually1 but not essentially2 involve a first stage of heating to a temperature between 200 and 300° C in air. During this so-called preoxidation stage, a proportion of oxygen is taken into the modified polymer structure to produce a black, heat resistant fibre3.
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References
Shindo, A., Rep. Gov. Ind. Res. Inst., Osaka, Japan, No. 317, December 1961.
Standage, A. E., and Prescott, R., Nature, 211, 169 (1966).
Houtz, R. C., Textile Research J., 20, 786 (1950).
Total Spectra Chemical Classes Index, Sadtler Research Laboratories Inc., Philadelphia, Pa., USA.
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STANDAGE, A., MATKOWSKY, R. Structure of Oxidized Polyacrylonitrile. Nature 224, 688–689 (1969). https://doi.org/10.1038/224688a0
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DOI: https://doi.org/10.1038/224688a0
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