Effect of benzoic acid content on aging of 6FDA copolyimides based thin film composite (TFC) membranes in CO2/CH4 environment
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43919312" target="_blank" >RIV/60461373:22310/19:43919312 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S1383586618318811?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1383586618318811?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.seppur.2018.08.047" target="_blank" >10.1016/j.seppur.2018.08.047</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effect of benzoic acid content on aging of 6FDA copolyimides based thin film composite (TFC) membranes in CO2/CH4 environment
Popis výsledku v původním jazyce
6FDA based polyimides possess outstanding properties, with a high free volume fraction entailing in high permselectivity properties for gas separation processes. However, they are very sensitive to aging process. Copolyimdes 6FDA–DAM:DABA were synthesized using different ratios of diamines: (9:1), (3:1) and (2:1) and the homopolyimide 6FDA–DAM. Thin Film Composite membranes were prepared and thermally annealed at 300 °C for 1 h to improve CO2 induced plasticization resistance. For exploring the future applications of these polymers, long–term performance studies of TFC membranes are absolutely needed. For this purpose, TFC membranes were tested for 180 h at 35 °C using a 50/50 vol./vol. CO2/CH4 feed composition at 8 bars of transmembrane pressure and aging was done under similar conditions. As a result, a more accurate behavior of long–term performance under working conditions can be disclosed. Overall, the drop of performance of all TFC membranes was minor, if it is compared with other studies of aging under ambient conditions. It is explained because polymeric materials experience certain swelling under continuous working conditions due to the presence CO2 and they cannot rearrange themselves as fast as under ambient conditions. 6FDA based polyimides are optimal candidates for industrial applications without losing their properties over extended period of time. © 2018 Elsevier B.V.
Název v anglickém jazyce
Effect of benzoic acid content on aging of 6FDA copolyimides based thin film composite (TFC) membranes in CO2/CH4 environment
Popis výsledku anglicky
6FDA based polyimides possess outstanding properties, with a high free volume fraction entailing in high permselectivity properties for gas separation processes. However, they are very sensitive to aging process. Copolyimdes 6FDA–DAM:DABA were synthesized using different ratios of diamines: (9:1), (3:1) and (2:1) and the homopolyimide 6FDA–DAM. Thin Film Composite membranes were prepared and thermally annealed at 300 °C for 1 h to improve CO2 induced plasticization resistance. For exploring the future applications of these polymers, long–term performance studies of TFC membranes are absolutely needed. For this purpose, TFC membranes were tested for 180 h at 35 °C using a 50/50 vol./vol. CO2/CH4 feed composition at 8 bars of transmembrane pressure and aging was done under similar conditions. As a result, a more accurate behavior of long–term performance under working conditions can be disclosed. Overall, the drop of performance of all TFC membranes was minor, if it is compared with other studies of aging under ambient conditions. It is explained because polymeric materials experience certain swelling under continuous working conditions due to the presence CO2 and they cannot rearrange themselves as fast as under ambient conditions. 6FDA based polyimides are optimal candidates for industrial applications without losing their properties over extended period of time. © 2018 Elsevier B.V.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20402 - Chemical process engineering
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Separation and Purification technology
ISSN
1383-5866
e-ISSN
—
Svazek periodika
210
Číslo periodika v rámci svazku
February
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
11
Strana od-do
616-626
Kód UT WoS článku
000449132900066
EID výsledku v databázi Scopus
2-s2.0-85052638124