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Gas transport properties of polybenzimidazole and poly(phenylene oxide) mixed matrix membranes incorporated with PDA-functionalised titanate nanotubes
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SYSNO ASEP 0470658 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Gas transport properties of polybenzimidazole and poly(phenylene oxide) mixed matrix membranes incorporated with PDA-functionalised titanate nanotubes Author(s) Giel, Verena (UMCH-V) RID, ORCID
Perchacz, Magdalena (UMCH-V) RID
Kredatusová, Jana (UMCH-V) RID
Pientka, Zbyněk (UMCH-V) RIDArticle number 3 Source Title Nanoscale Research Letters. - : Springer - ISSN 1931-7573
Roč. 12, č. 1 (2017), s. 1-15Number of pages 15 s. Language eng - English Country US - United States Keywords polybenzimidazole ; poly(phenylene oxide) ; titanate nanotubes Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects LO1507 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UMCH-V - RVO:61389013 UT WOS 000397560000001 EID SCOPUS 85008196676 DOI 10.1186/s11671-016-1613-4 Annotation Functionalised titanate nanotubes (TiNTs) were incorporated to poly(5,5-bisbenzimidazole-2,2-diyl-1,3-phenylene) (PBI) or poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) for improving the interfacial compatibility between the polymer matrix and inorganic material and for altering the gas separation performance of the neat polymer membranes. Functionalisation consisted in oxidative polymerisation of dopamine-hydrochloride on the surface of non-functionalised TiNTs. Transmission electron microscopy (TEM) confirmed that a thin polydopamine (PDA) layer was created on the surface of TiNTs. 1.5, 3, 6, and 9 wt.% of PDA-functionalised TiNTs (PDA-TiNTs) were dispersed to each type of polymer matrix to create so-called mixed matrix membranes (MMMs). Infrared spectroscopy confirmed that –OH and –NH groups exist on the surface of PDA-TiNTs and that the nanotubes interact via H-bonding with PBI but not with PPO. The distribution of PDA-TiNTs in the MMMs was to some extent uniform as scanning electron microscope (SEM) studies showed. Beyond, PDA-TiNTs exhibit positive effect on gas transport properties, resulting in increased selectivities of MMMs. The addition of nanotubes caused a decrease in permeabilities but an increase in selectivities. It is shown that 9 wt.% of PDA-TiNTs in PBI gave a rise to CO2/N2 and CO2/CH4 selectivities of 112 and 63 %, respectively. In case of PPO-PDA-TiNT MMMs, CO2/N2 and CO2/CH4 selectivity increased about 25 and 17 %, respectively. Sorption measurement showed that the presence of PDA-TiNTs in PBI caused an increase in CO2 sorption, whereas the influence on other gases is less noticeable. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2018
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