The Determination of Functionalized Textile Materials Durability Based on Copolymers of Acrylonitrile to Thermal and Thermal-Oxidative Degradation

Authors

  • Olga Haranina Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv, Ukraine Author
  • Ievgeniia Romaniuk Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv, Ukraine Author
  • Yana Red'ko Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv, Ukraine Author
  • Anna Vardanian Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv, Ukraine Author
  • Liudmyla Halavska Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv, Ukraine Author
  • Nataliia Pervaia Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv, Ukraine Author
  • Antonina Babich Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv, Ukraine Author

DOI:

https://doi.org/10.14502/tekstilec.67.2023078

Keywords:

superficial modification, polyacrylonitrile fibre, glass transition temperature, physical and mechanical properties of textile materials

Abstract

Acrylonitrile is widely used to produce carbon fibres, household textiles, artificial fur, etc. The modification of polyacrylonitrile fibres in an alkaline medium is extended in the production of textile sorbents. The scientific direction of fibre modification through surface activation using hydrogen peroxide is of scientific interest. However, the thermal and thermophysical properties of the samples are not examined. Therefore, interest arises when analysing the effect of polyacrylonitrile textile material functionalization on the resistance of fibres to thermal oxidation and thermal degradation. The study of thermogravimetry and differential thermogravimetry thermooxide of polyacrylonitrile – modified fibres is carried out using thermogravimetric analysis to research the thermal oxidation and thermal degradation of modified polyacrylonitrile fibre samples. A change in the rate of thermal oxidative-degradation in the process of functionalization was identified in this research. A change in the loss of mass of the sample under different conditions of functionalization was also identified. The total glass transition of the polyacrylonitrile was achieved by heating the polymer to 130 °C. The intensification self-regulation of the structure of the polymeric material through the formation of the mesophase was released at the temperature of around 100 °C. During the heating of the initial polyacrylonitrile textile material to the temperature of 70‒80 °C, a weakening of intermolecular contacts was observed, which led to an increase in the mobility of macromolecular segments. The temperature of 78 °С was considered to be the initial glass transition temperature Tg,t1 and Tg,t2 – 121 °С as the final temperature for the original sample. However, if the temperature exceeded 130 °C, chemical changes in the polymer occurred, in particular, the process of cyclization. The analysis of the thermogravimetry data of thermally oxidized samples resulted in the retention of the complex stepwise nature of decomposition inherent in the initial fibrous material based on acrylonitrile copolymers. The conducted analysis showed the absence of significant changes in the reasonable conditions of chemical modification and practical operation of textile materials. The physical and mechanical properties of functionalized textile materials based on acrylonitrile copolymers were studied. As a result of surface functionalization, an insignificant strength reduction of functionalized textile materials occurred.

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References

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Published

2024-03-29

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Scientific article

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How to Cite

Haranina, O., Romaniuk, I., Red'ko, Y., Vardanian, A., Halavska, L., Pervaia, N., & Babich, A. (2024). The Determination of Functionalized Textile Materials Durability Based on Copolymers of Acrylonitrile to Thermal and Thermal-Oxidative Degradation. Tekstilec, 67, 68–77. https://doi.org/10.14502/tekstilec.67.2023078

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