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Interaction of Nitrogen Dioxide with Poly-p-Phenylene Terephthalamide (Terlon)

  • CHEMICAL PHYSICS OF POLYMER MATERIALS
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Russian Journal of Physical Chemistry B Aims and scope Submit manuscript

Abstract

The study of the properties of polymer fibers is an urgent and important task for the creation of new, promising materials and modification of their properties under operating conditions. Using the methods of EPR and IR spectroscopy, thermoanalytical methods, and scanning electron microscopy, a comprehensive study of low-temperature oxidation in the air of poly-p-phenylene terephthalamide (terlon), previously nitrated with nitrogen oxides, and the mechanism of this process is presented. The phenylnitrite fragments of macromolecules formed during nitration are identified as an oxidation initiator. The polymer is destroyed as a result of the decomposition of N-nitrosoamides, N-nitro compounds, and N-nitrites: the products of terlon nitration. The main products of terlon nitration, esters and carboxylic acids, are determined by IR spectroscopy.

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ACKNOWLEDGMENTS

The authors thank A.E. Flatova for measuring the microstructure of the fibers and A.A. Dalinkevich for measuring the tensile strength of the fibers.

Funding

This study was financed though a state assignment (registration number 0120125305) and as part of the financing of state assignment no. GZ-0082-2019-0008 (AAAA-A20-120030590042-8) of the Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences.

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Authors and Affiliations

  1. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia

    T. V. Pokholok & S. M. Lomakin

  2. Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Moscow, Russia

    I. G. Kalinina

Authors
  1. T. V. Pokholok
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  2. S. M. Lomakin
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  3. I. G. Kalinina
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Correspondence to T. V. Pokholok.

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Pokholok, T.V., Lomakin, S.M. & Kalinina, I.G. Interaction of Nitrogen Dioxide with Poly-p-Phenylene Terephthalamide (Terlon). Russ. J. Phys. Chem. B 16, 155–161 (2022). https://doi.org/10.1134/S1990793122010250

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  • DOI: https://doi.org/10.1134/S1990793122010250

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