Heat Effect Due to Monoclinic-to-Orthorhombic Phase Transition in Ultrahigh Molecular Weight Polyethylene

V. M. Egorov; V. A. Marikhin; L. P. Myasnikova; A. K. Borisov; E. M. Ivan’kova; S. S. Ivanchev

doi:10.1134/S1063783419100147

Heat Effect Due to Monoclinic-to-Orthorhombic Phase Transition in Ultrahigh Molecular Weight Polyethylene

Authors: Egorov V.M.¹, Marikhin V.A.¹, Myasnikova L.P.¹, Borisov A.K.¹, Ivan’kova E.M.², Ivanchev S.S.²
Affiliations:
1. Ioffe Institute
2. Institute of Macromolecular Compounds, Russian Academy of Sciences
Issue: Vol 61, No 10 (2019)
Pages: 1927-1932
Section: Polymers
URL: https://ogarev-online.ru/1063-7834/article/view/206410
DOI: https://doi.org/10.1134/S1063783419100147
ID: 206410

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Abstract

We analyze heat effects associated with the solid-state phase transition in ultrahigh molecular weight polyethylene from the unstable monoclinic phase into thermodynamically stable orthorhombic phase. The model proposed here for the structure of supramolecular formations of monoclinic phase does not contradict to earlier X-ray diffraction data for this polymer.