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Open AccessArticle

Polyimide-Based Nanocomposites with Binary CeO2/Nanocarbon Fillers: Conjointly Enhanced Thermal and Mechanical Properties

1
Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia
2
Institute of Chemistry, Saint Petersburg State University, 198504 Saint Petersburg, Russia
3
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(9), 1952; https://doi.org/10.3390/polym12091952
Received: 29 July 2020 / Revised: 13 August 2020 / Accepted: 24 August 2020 / Published: 28 August 2020
(This article belongs to the Section Polymer Composites and Nanocomposites)
To design novel polymer materials with optimal properties relevant to industrial usage, it would seem logical to modify polymers with reportedly good functionality, such as polyimides (PIs). We have created a set of PI-based nanocomposites containing binary blends of CeO2 with carbon nanoparticles (nanocones/discs or nanofibres), to improve a number of functional characteristics of the PIs. The prime novelty of this study is in a search for a synergistic effect amidst the nanofiller moieties regarding the thermal and the mechanical properties of PIs. In this paper, we report on the structure, thermal, and mechanical characteristics of the PI-based nanocomposites with binary fillers. We have found that, with a certain composition, the functional performance of a material can be substantially improved. For example, a PI containing SO2-groups in its macrochains not only had its thermal stability enhanced (by ~20 °C, 10% weight loss up to 533 °C) but also had its stiffness increased by more than 10% (Young’s modulus as high as 2.9–3.0 GPa) in comparison with the matrix PI. In the case of a PI with no sulfonic groups, binary fillers increased stiffness of the polymer above its glass transition temperature, thereby widening its working temperature range. The mechanisms of these phenomena are discussed. Thus, this study could contribute to the design of new composite materials with controllable and improved functionality. View Full-Text
Keywords: nanocomposites; polyimides; binary nanofillers; nanoceria; carbon nanofibres; carbon nanocones/discs nanocomposites; polyimides; binary nanofillers; nanoceria; carbon nanofibres; carbon nanocones/discs
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MDPI and ACS Style

Nikolaeva, A.L.; Gofman, I.V.; Yakimansky, A.V.; Ivan’kova, E.M.; Abalov, I.V.; Baranchikov, A.E.; Ivanov, V.K. Polyimide-Based Nanocomposites with Binary CeO2/Nanocarbon Fillers: Conjointly Enhanced Thermal and Mechanical Properties. Polymers 2020, 12, 1952. https://doi.org/10.3390/polym12091952

AMA Style

Nikolaeva AL, Gofman IV, Yakimansky AV, Ivan’kova EM, Abalov IV, Baranchikov AE, Ivanov VK. Polyimide-Based Nanocomposites with Binary CeO2/Nanocarbon Fillers: Conjointly Enhanced Thermal and Mechanical Properties. Polymers. 2020; 12(9):1952. https://doi.org/10.3390/polym12091952

Chicago/Turabian Style

Nikolaeva, Alexandra L.; Gofman, Iosif V.; Yakimansky, Alexander V.; Ivan’kova, Elena M.; Abalov, Ivan V.; Baranchikov, Alexander E.; Ivanov, Vladimir K. 2020. "Polyimide-Based Nanocomposites with Binary CeO2/Nanocarbon Fillers: Conjointly Enhanced Thermal and Mechanical Properties" Polymers 12, no. 9: 1952. https://doi.org/10.3390/polym12091952

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