Abstract
With the use of the methods of dynamic mechanical analysis and thermomechanical analysis, the structural transformations of polyacrylonitrile fibers during heating are studied. It is shown that, regardless of the degree of macromolecule orientation, the fibers not exposed to heating are characterized by an amorphous ordered structure with an ordered mesophase. During heating, the fiber acquires a single-phase structure owing to transition of the amorphous component to the mesophase.
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Original Russian Text © A.T. Kalashnik, T.N. Smirnova, O.P. Chernova, V.V. Kozlov, 2010, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2010, Vol. 52, No. 11, pp. 2038–2043.
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Kalashnik, A.T., Smirnova, T.N., Chernova, O.P. et al. Properties and structure of polyacrylonitrile fibers. Polym. Sci. Ser. A 52, 1233–1238 (2010). https://doi.org/10.1134/S0965545X10110180
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DOI: https://doi.org/10.1134/S0965545X10110180