Polymer Composites Based on Polylactide-Containing Various Kinds
of Carbon Nanofillers

S. Z. Rogovina; Роговина С. З.; M. M. Gasymov; Гасымов М. М.; S. M. Lomakin; Ломакин С. М.; O. P. Kuznetsova; Кузнецова О. П.; V. G. Shevchenko; Шевченко В. Г.; A. A. Arbuzov; Арбузов А. А.; A. A. Berlin; Берлин А. А.

doi:10.31857/S0207401X23110080

Polymer Composites Based on Polylactide-Containing Various Kinds of Carbon Nanofillers

Authors: Rogovina S.Z.¹, Gasymov M.M.¹, Lomakin S.M.¹^,2, Kuznetsova O.P.¹, Shevchenko V.G.¹^,3, Arbuzov A.A.⁴, Berlin A.A.¹
Affiliations:
1. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences
2. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences
3. Enikolopov Institute of Synthetic Polymer Materials, Russian Academy of Sciences
4. Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry
Issue: Vol 42, No 11 (2023)
Pages: 70-78
Section: Chemical physics of polymeric materials
URL: https://rjmseer.com/0207-401X/article/view/675026
DOI: https://doi.org/10.31857/S0207401X23110080
EDN: https://elibrary.ru/VEMEDJ
ID: 675026

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Abstract

Filled nanocomposites of polylactide with graphite nanoplates (GNPs) and reduced graphene
oxide (RGO) are prepared by liquid-phase synthesis. A comparative study of the mechanical, electric, and
thermophysical characteristics of the compositions depending on the nature of the nanofillers is carried out.
An insignificant difference in the mechanical parameters of the compositions containing GNPs and RGO as
fillers is established. At the same time, when studying the electrical properties, it is found that the use of RGO
as a filler leads to the production of composites with a lower percolation threshold of the flow than in the case
of GNPs and increased conductivity. The differential scanning calorimetry (DSC) method shows that compositions
containing GNPs as a filler have a higher degree of crystallinity in comparison with similar compositions
containing RGO. This is caused by the structure of the filled compositions, which influences the
nucleation rate of polylactide (PLA) crystallites on the surface of ordered planar nanoparticles of the GNPs
and imperfect RGO particles. Thus, the use of different carbon nanofillers may promote the production of
compositions that differ in their characteristics.

Keywords

polylactide, graphite nanoplates, reduced graphene oxide, thermal and mechanical properties, thermal stability, electrical conductivity

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