Abstract
The main characteristics of elementary acts in the mechanical fracture kinetics of oriented polymers, namely, the initial potential barrier U 0 and the activation volume V A , are determined. The values of U 0 And V A are obtained from analyzing the temperature and force dependences of the life of polymers with allowance for the actual stresses (overstresses) applied to chain molecules, which are found by IR spectroscopy. The values obtained (U 0 ≈ 4 eV, V A ≈ 0.03 nm3) agree satisfactorily with the dissociation energy and activation volume of the fluctuation breaking of covalent skeleton bonds in polymer molecules.
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Original Russian Text © A.I. Slutsker, V.I. Vettegren, V.L. Gilyarov, Yu.I. Polikarpov, 2007, published in Fizika Tverdogo Tela, 2007, Vol. 49, No. 9, pp. 1608–1617.
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Slutsker, A.I., Vettegren, V.I., Gilyarov, V.L. et al. Characteristics of elementary acts in the mechanical fracture kinetics of polymers. Phys. Solid State 49, 1685–1694 (2007). https://doi.org/10.1134/S1063783407090144
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DOI: https://doi.org/10.1134/S1063783407090144