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CHEMISTRY AND MATERIAL SCIENCE
Nanocomposites of aromatic poly(amide-imide) with nanotubular Mg–Fe hydrosilicate
Svetlana V. Kononovaa, Galina K. Lebedevaa, Valery S. Kozlovb, Eleonora N. Korytkovac, Tatyana P. Maslennikovac, Elena V. Kruchininaa, Elena N. Vlasovaa, Natalia N. Saprykinaa, Galina N. Gubanovaa, Milana E. Vylegzhaninaa, Vasiliy T. Lebedevb a Institute of Macromolecular Compounds Russian Academy of Science, St. Petersburg, Russia
b Petersburg Nuclear Physics Institute named by B. P. Konstantinov of National Research Centre "Kurchatov Institute", Gatchina, Russia
c Russian Academy of Science, Grebenshchikov Institute of Silicate Chemistry, St. Petersburg, Russia
Аннотация:
Composite films based on aromatic polyamide imide with carboxyl-containing fragments in repeating units (PAI-Ac) containing hydrosilicate nanotubes (Mg,Fe)$_3$Si$_2$O$_5$(OH)$_4$ are structurally sensitive to the molecular weight of the polymer used. According to Mössbauer spectroscopy data, nanotubes introduced into a polymer matrix generally retain their original structure. When using a polymer with a relatively low molecular weight, composite films are formed that are not stable during the pervaporation of cyclohexane and ethanol. In the case of a high-molecular polymer, the resulting MMM-type membranes are stable during pervaporation. They are more permeable to polar liquids compared to the base polymer and MMMs containing Mg$_3$Si$_2$O$_5$(OH)$_4$ nanotubes. Analysis of the found differences in the properties of the studied nanocomposites with iron-containing nanotubes in the PAI-Ac matrix from similar nanocomposites with magnesium-containing nanotubes leads to the conclusion about the need to study MMMs with iron-containing nanoparticles of a different structure.
Ключевые слова:
poly(amide-imide), pervaporation, liquid separation, synthesis, hydrosilicate nanotubes, Mössbauer spectroscopy, morphology, composite materials, mixed matrix membranes (MMM), electron microscopy, atomic force microscopy.
Поступила в редакцию: 02.04.2024 Исправленный вариант: 05.04.2024 Принята в печать: 06.04.2024
Образец цитирования:
Svetlana V. Kononova, Galina K. Lebedeva, Valery S. Kozlov, Eleonora N. Korytkova, Tatyana P. Maslennikova, Elena V. Kruchinina, Elena N. Vlasova, Natalia N. Saprykina, Galina N. Gubanova, Milana E. Vylegzhanina, Vasiliy T. Lebedev, “Nanocomposites of aromatic poly(amide-imide) with nanotubular Mg–Fe hydrosilicate”, Наносистемы: физика, химия, математика, 15:2 (2024), 268–284
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/nano1270 https://www.mathnet.ru/rus/nano/v15/i2/p268
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