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INTERMOLECULAR INTERACTION IN POLYARYLATE – POLY(ARYLENE ETHER KETONE) MIXTURE AT HIGH-TEMPERATURE PROCESSINGстатья
Информация о цитировании статьи получена из
Web of Science
Дата последнего поиска статьи во внешних источниках: 23 января 2020 г.
- Авторы: Sorokin A.E., Krasnov A.P., Shaposhnikova V.V., Salazkin S.N., Goroshkov M.V., Naumkin A.V.
- Журнал: IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA
- Том: 62
- Номер: 8
- Год издания: 2019
- Первая страница: 147
- Последняя страница: 154
- Оригинальные версии: ВЗАИМОДЕЙСТВИЕ В СМЕСИ ПОЛИАРИЛАТА С ПОЛИАРИЛЕНЭФИРКЕТОНОМ ПРИ ВЫСОКОТЕМПЕРАТУРНОЙ ПЕРЕРАБОТКЕ
- Аннотация: Methods of modifying polyarylate based on bisphenol A and mixture of iso- and tereph-thalic acids by a representative of a promising class of polymers — polyarylene ether ketone have been discussed in this article. Comparative thermomechanical and thermofriction tests of two grades of poly(arylene ether ketone)based on bisphenol A and 4,4'-difluorobenzophenone (PAEK-32 and PAEK-34) have been carried out. It has been established that PAEK-34 is the most suitable for modifying polyarylate, which is confirmed by its higher softening temperature and stable fric-tion coefficient at elevated temperatures. The thermomechanical properties and molecular mass distribution of amorphous polyarylene ether ketone before and after pressing have been studied. It has been established that during processing of poly(arylene ether ketone) PAEK-34 it’s molecular weight increases from 123 to 178 thousand a.m.u. with simultaneous change in the character of the molecular mass distribution from bimodal to unimodal. At the same time, there is a sharp de-crease in the content of the low molecular weight fraction from 23.32 to 7.2%. Theoretical compat-ibility of polyarethylene ether ketone PAEK-34 and polyarylate DV based on the theory of solubility of substances has been studied. It was established that mixtures of these polymers are compatible for any components’ ratio according to the calculation results. The thermomechanical character-istics of the mixtures obtained on the basis of polyarylate and polyarylene ether ketone have been evaluated. It has been established that the growth of heat resistance of the mixture during pro-cessing is caused by intermolecular interaction of components with the formation of new chemical compounds having a block-type copolymer structure. This was confirmed by the change in the na-ture of the molecular-mass distribution of the polymer mixture upon the transition of the pressing temperature from 260 °C to 300 °C. It was established that the optimal conditions for the realization of block-copolymer formation reaction are created at 300 °C.
- Добавил в систему: Шапошникова Вера Владимировна
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