Abstract
The temperature dependences of the dynamic tensile stresses on the chemical bonds of the skeleton of chain molecules and the bonds between molecules in poly(ethylene) and polyamide 6 crystals are measured using X-ray diffraction and Raman spectroscopy in the temperature range 5–500 K. The relations of the dynamic stresses to the quantum characteristics of the vibrational dynamics of polymer molecules are derived. The contributions from the zero-point and thermal vibrations of molecules to the stresses are determined. It is revealed that the dynamic tensile stresses on the intermolecular bonds at the melting temperatures of the crystals approach the tensile strength of these bonds.
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Original Russian Text © V.I. Vettegren, A.I. Slutsker, V.B. Kulik, 2009, published in Fizika Tverdogo Tela, 2009, Vol. 51, No. 1, pp. 198–205.
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Vettegren, V.I., Slutsker, A.I. & Kulik, V.B. Stresses induced in polymer crystals by the atomic-molecular internal dynamics. Phys. Solid State 51, 212–220 (2009). https://doi.org/10.1134/S1063783409010272
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DOI: https://doi.org/10.1134/S1063783409010272