Investigation of the resistance of thermoplastic polyurethane during thermooxidative and thermochemical treatment with diethylene glycole by gel permeation chromatography and microstructural analysis

Ponomarenko S.A., Lonskii S.L.
UDC
678.012:543.544.15:620.187.3
DOI
10.18577/2307-6046-2026-0-1-67-84
Article PDF (Russian) (1.11 MB)
How to cite
Ponomarenko S.A., Lonskii S.L. Investigation of the resistance of thermoplastic polyurethane during thermooxidative and thermochemical treatment with diethylene glycole by gel permeation chromatography and microstructural analysis // Proceedings of VIAM. 2026. No. 1. DOI: 10.18577/2307-6046-2026-0-1-67-84. URL: https://test.viam.ru/en/journal/2026/1/6
Keywords
thermoplastic polyurethane, molecular mass distribution, number-average molecular mass, microstructural studies, microphase structure, long-time processing, thermooxi- dative treatment, thermochemical tr
Abstract

The stability of thermoplastic polyurethane samples during high temperature processing has been evaluated. Material degradation during thermooxidative processing in air at 200 °C is well explained by the possible presence of residual amounts of 1,4-butanediol and its participation in the processes taking place. For quantitative data processing, a model was proposed that is suitable to describe the kinetics of polymer degradation during its thermochemical processing at 150 °C (R2 = 0,9982); to assess its suitability at a higher processing temperature of 180 °C, more data is required.

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