vuzbiochemiИзвестия вузов. Прикладная химия и биотехнологияProceedings of Universities. Applied Chemistry and Biotechnology2227-29252500-1558ИРНИТУ10.21285/2227-2925-2020-10-1-169-173vuzbiochemi-329Research ArticleКРАТКИЕ СООБЩЕНИЯBRIEF COMMUNICATIONХимическая модификация функциональных сополимеровChemical modification of functional copolymersПрозороваГ. Ф.ProzorovaG. F.

Прозорова Галина Фирсовна – доктор химических наук, ведущий научный сотрудник.

664033, Иркутск, ул. Фаворского, 1.

Galina F. Prozorova - Dr. Sci. (Chemistry), Leading Researcher, A.E. Favorsky Irkutsk Institute of Chemistry SB RAS.

1 Favorsky St., Irkutsk 664033.

prozorova@irioch.irk.ruКузнецоваН. П.KuznetsovaN. P.

Кузнецова Надежда Петровна – кандидат химических наук, старший научный сотрудник,

664033, Иркутск, ул. Фаворского, 1.

Nadezhda P. Kuznetsova - Cand. Sci. (Chemistry), Senior Researcher, A.E. Favorsky Irkutsk Institute of Chemistry SB RAS.

1 Favorsky St., Irkutsk 664033.

nkuznetsova@irioch.irk.ruКоржоваС. А.KorzhovaS. A.

Коржова Светлана Анатольевна - кандидат химических наук, старший научный сотрудник,

664033, Иркутск, ул. Фаворского, 1.

Svetlana A. Korzhova - Cand. Sci. (Chemistry), Senior Researcher, A.E. Favorsky Irkutsk Institute of Chemistry SB RAS.

1 Favorsky St., Irkutsk 664033.

korzhova@irioch.irk.ruИркутский институт химии им. А.Е. Фаворского СО РАНРоссияA.E. Favorsky Irkutsk Institute of Chemistry SB RASRussian Federation202001042020101169173Copyright © Прозорова Г.Ф., Кузнецова Н.П., Коржова С.А., 20202020Прозорова Г.Ф., Кузнецова Н.П., Коржова С.А.Prozorova G.F., Kuznetsova N.P., Korzhova S.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vuzbiochemi.elpub.ru/jour/article/view/329

Исследована возможность химической модификации функциональных термостойких сополимеров 1-винил-1,2,4-триазола с винилацетатом разного состава, синтезированных в условиях свободно-радикального инициирования в присутствии динитрила азобисизомасляной кислоты. Модификацию сополимеров осуществляли методом щелочного гидролиза, в результате получены новые сополимеры, содержащие в макромолекулах звенья винилтриазола и винилового спирта. Структуру, состав и физико-химические свойства сополимеров определяли с использованием методов элементного анализа, ИК-спектроскопии и термогравиметрического анализа. Установлено, что с увеличением количества звеньев винилового спирта в сополимере от 25 до 87 мол.% наблюдается уменьшение значений характеристической вязкости сополимеров практически в два раза. Сополимеры проявляют диэлектрические свойства, характеризуются удельной электрической проводимостью порядка 10~14-10-15 См/см. По данным термогравиметрического анализа сополимеры обладают устойчивостью к термоокислительной деструкции до 270-290 °С в зависимости от состава. Введение фрагмента винилового спирта в структуру макромолекул сополимеров способствовало улучшению их волокно- и пленкообразующих свойств, а именно: из растворов модифицированных сополимеров на основе 1-винил-1,2,4-триазола успешно формируются волокна и прозрачные эластичные пленки с хорошей адгезией на различных металлических поверхностях.

The possibility of chemical modification of thermally-stable functional copolymers of 1-vinyl-1,2,4-triazole with vinyl acetate of various compositions synthesized under conditions of free-radical polymerisation in the presence of azobisisobutyronitrile was studied. Modification of the copolymers was carried out by alkaline hydrolysis; as a result, new copolymers containing vinyl triazole and vinyl alcohol units in the macromolecules were obtained. The structure, composition, physical and chemical properties of the copolymers were determined using elemental analysis, infrared spectroscopy and thermogravimetric analysis. With an increase in the number of vinyl alcohol units in the copolymer from 25 to 87 mol %, a nearly twofold reduction in the intrinsic viscosity of the copolymers was observed. The copolymers, which exhibit dielectric properties, are characterised by electrical conductivity of the order of Ш14-10-15 S/cm. According to thermogravimetric analysis data, the copolymers are resistant to thermooxidative degradation up to 270-290 °C depending on the composition. The introduction of a vinyl alcohol fragment into the structure of copolymer macromolecules contributed to the improvement of their fibre- and film-forming properties - that is, fibres and transparent elastic films with good adhesion to various metal surfaces can be formed from solutions of modified copolymers based on 1-vinyl-1,2,4-triazole.

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The authors declare that there are no conflicts of interest present.