Conclusions
1. The thermal oxidative degradation of PAN fibres having an IA content from 1.2 to 6.4% in the copolymer has been studied by the DTA method.
2. Increasing the IA content of the copolymer leads to a shift of the exothermic effects of the cyclization reaction into the lower temperature region, and also to a decrease in the thermally effect from thermal oxidation, which affords a possibility of increasing the efficiency of processes of heat treatment of PAN in the preparation of carbon fibres and of reducing heat expenditures.
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Additional information
NITs Uglekhimvolokno (Mytishchi). Translated from Khimicheskie Volokna, No. 5, pp. 25–27, September–October, 1993.
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Zhidkova, O.V., Andreeva, I.N., Radishevskii, M.B. et al. Thermal properties of polyacrylonitrile copolymers having various chemical compositions. Fibre Chem 25, 368–370 (1994). https://doi.org/10.1007/BF00551628
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DOI: https://doi.org/10.1007/BF00551628