Mechanical properties, strength physics and plasticity

Estimating the dimensions of nanocrystalline elements of the polyethylene structure by differential scanning calorimetry

V. M. Egorov^a, A. K. Borisov^a, V. A. Marikhin^a, L. P. Myasnikova^a, S. A. Gur'eva^a, E. M. Ivan'kova<sup>b

a</sup> Ioffe Institute, St. Petersburg, Russia
^b Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia

Abstract: A method is proposed for calculating the dimension distribution of nanocrystalline elements of the lamellar and fibrillar morphologies of a polymer. Calorimetric data were used to calculate the distribution of the longitudinal size of these elements in lamellae and microfibrils of ultrahigh molecular weight polyethylene. The calculation results are consistent with the data obtained by the X-ray method.

Keywords: heat capacity, dimension effect, lamella, microfibril, polyethylene.

Received: 28.04.2022
Revised: 28.04.2022
Accepted: 02.05.2022

DOI: 10.21883/FTT.2022.08.52702.369

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