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Dual‐phase polyphenylene oxide membranes with copolyimide branched modifiers
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SYSNO ASEP 0532114 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Dual‐phase polyphenylene oxide membranes with copolyimide branched modifiers Tvůrce(i) Tian, N. S. (RU)
Meleshko, T. K. (RU)
Polotskaya, G. A. (RU)
Kashina, A. V. (RU)
Gofman, I. V. (RU)
Zoolshoev, Z. F. (RU)
Lavrentyev, V. K. (RU)
Pientka, Zbyněk (UMCH-V) RID
Yakimansky, A. V. (RU)Číslo článku e49543 Zdroj.dok. Journal of Applied Polymer Science. - : Wiley - ISSN 0021-8995
Roč. 137, č. 47 (2020), s. 1-9Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova poly(2,6‐dimethyl‐1,4‐phenylene oxide) membranes ; gas separation ; copolyimide branched modifiers Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science Způsob publikování Omezený přístup Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000543343100001 EID SCOPUS 85087215274 DOI 10.1002/app.49543 Anotace Poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO) membranes are attractive due to high permeability for gases. However, the selectivity of these membranes is insufficient. In this work, the gas selectivity was improved without significant loss of the permeability. For this purpose, PPO was modified via incorporation of the branched copolyimide filler–grafted copolyimide (PI‐g‐PMMA) with polymethyl methacrylate (PMMA) side chains. Two series of mixed self‐supporting PPO/PI‐g‐PMMA films (with variation of the filler content) were prepared and studied as gas separation membranes. The length of the polymide (PI) chain and the density of PMMA grafting were the same in both series, however, in one series the grafted chains contained 50 MMA units, and in the other 150 units. The intermolecular interactions between the PPO matrix and the PI‐g‐PMMA fillers were investigated using viscometry, infrared (IR) spectroscopy, and scanning electron microscopy. The compatibility of the polymer components is limited. However, for both series, the contents of the respective filler are found, which ensures phase segregation only in a microscale. Therefore, the mechanical properties of the films allow their use as gas separation membranes. It is shown that the degree of the segregation as well as the mechanical and gas transport properties of the membranes depend on the length of the PMMA chains, and the membranes with filler‐containing shorter branches (50 MMA units) show better selectivity. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2021 Elektronická adresa https://onlinelibrary.wiley.com/doi/full/10.1002/app.49543
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