najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2019-10-6-666-673najo-822Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХInfluence of nanoparticles of various types as fillers on resistance to hydrolysis of films of heat-resistant polyimideInfluence of nanoparticles of various types as fillers on resistance to hydrolysis of films of heat-resistant polyimideBykovaЕ. N.BykovaE. N.

199004, Bolshoi prospect 31, Saint Petersburg

199004, Bolshoi prospect 31, Saint Petersburg

bykova.elena.n@gmail.comGofmanI. V.GofmanI. V.

199004, Bolshoi prospect 31, Saint Petersburg

199004, Bolshoi prospect 31, Saint Petersburg

gofman@imc.macro.ruIvankovaЕ. М.IvankovaE. M.

199004, Bolshoi prospect 31, Saint Petersburg

199004, Bolshoi prospect 31, Saint Petersburg

ivelen@mail.ruNikolaevaА. L.NikolaevaA. L.

199004, Bolshoi prospect 31, Saint Petersburg

199004, Bolshoi prospect 31, Saint Petersburg

alexandra.l.nikolaeva@gmail.comYakimanskyА. V.YakimanskyA. V.

199004, Bolshoi prospect 31, Saint Petersburg; 198504, Universitetskii prospect 26, Peterhof, Saint Petersburg

199004, Bolshoi prospect 31, Saint Petersburg; 198504, Universitetskii prospect 26, Peterhof, Saint Petersburg

yakimansky@yahoo.comIvanovaO. S.IvanovaO. S.

119991, Leninsky prospect 31, Moscow

119991, Leninsky prospect 31, Moscow

runetta05@mail.ruBaranchikovА. E.BaranchikovA. E.

119991, Leninsky prospect 31, Moscow

119991, Leninsky prospect 31, Moscow

a.baranchikov@yandex.ruIvanovV. K.IvanovV. K.

Faculty of Materials Science Lomonosov Moscow State University.

119991, Leninsky prospect 31, Moscow; 119991, Leninskie gory 1, building 73, Moscow

 

Faculty of Materials Science Lomonosov Moscow State University.

119991, Leninsky prospect 31, Moscow; 119991, Leninskie gory 1, building 73, Moscow

van@igic.ras.ruInstitute of Macromolecular Compounds, Russian Academy of SciencesInstitute of Macromolecular Compounds, Russian Academy of SciencesInstitute of Macromolecular Compounds, Russian Academy of Sciences; Saint Petersburg State University, Institute of ChemistryInstitute of Macromolecular Compounds, Russian Academy of Sciences; Saint Petersburg State University, Institute of ChemistryKurnakov Institute of General and Inorganic Chemistry, Russian Academy of SciencesKurnakov Institute of General and Inorganic Chemistry, Russian Academy of SciencesKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences; Lomonosov Moscow State UniversityKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences; Lomonosov Moscow State University201913082025106666673Copyright © Bykova E.N., Gofman I.V., Ivankova E.M., Nikolaeva A.L., Yakimansky A.V., Ivanova O.S., Baranchikov A.E., Ivanov V.K., 20252025Bykova Е.N., Gofman I.V., Ivankova Е.М., Nikolaeva А.L., Yakimansky А.V., Ivanova O.S., Baranchikov А.E., Ivanov V.K.Bykova E.N., Gofman I.V., Ivankova E.M., Nikolaeva A.L., Yakimansky A.V., Ivanova O.S., Baranchikov A.E., Ivanov V.K.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/822

Impact of nanoparticles of various types as fillers on the stability of the poly(pyromellitimide)-based nanocomposite films’ properties in alkaline hydrolysis was studied. It was shown that the introduction of nanoparticles into the polymer can lead to an increase in excess free volume. This fact is evidenced by scanning electron microscopy and densitometric studies. The increase of the excess free volume was shown to provoke a rise of the diffusion intensity of the hydrolyzing agent in the films volume during their exposure to an alkaline medium. This effect leads to film swelling and, thereby, to increases of the intensity of the destructive action of hydrolysis on the material. Chemical surface pretreatment of the nanofiller allows one to obtain a composite with an increased packing density compared to that for a composite with unmodified nanoparticles. However, the hydrolytic stability of such a film still remains somewhat inferior to that of the pristine polyimide.

Impact of nanoparticles of various types as fillers on the stability of the poly(pyromellitimide)-based nanocomposite films’ properties in alkaline hydrolysis was studied. It was shown that the introduction of nanoparticles into the polymer can lead to an increase in excess free volume. This fact is evidenced by scanning electron microscopy and densitometric studies. The increase of the excess free volume was shown to provoke a rise of the diffusion intensity of the hydrolyzing agent in the films volume during their exposure to an alkaline medium. This effect leads to film swelling and, thereby, to increases of the intensity of the destructive action of hydrolysis on the material. Chemical surface pretreatment of the nanofiller allows one to obtain a composite with an increased packing density compared to that for a composite with unmodified nanoparticles. However, the hydrolytic stability of such a film still remains somewhat inferior to that of the pristine polyimide.

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