Effect of physical aging on the gas transport and sorption in PIM-1 membranes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F17%3A43914109" target="_blank" >RIV/60461373:22340/17:43914109 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0032386116309521#" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0032386116309521#</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.polymer.2016.10.040" target="_blank" >10.1016/j.polymer.2016.10.040</a>
Alternative languages
Result language
angličtina
Original language name
Effect of physical aging on the gas transport and sorption in PIM-1 membranes
Original language description
Understanding of the properties over long time scales is a key requirement for the successful application of novel polymers as membrane materials. In this light, the physical aging of dense PIM-1 films with different previous histories was monitored for more than 4 years via parallel gas sorption and permeability measurements. The effect of aging on the individual transport parameters, permeability, solubility and diffusivity, was studied on alcohol treated membranes with high excess free volume. Thermal conditioning of these membranes led to accelerated aging and a reduction of the initial gas permeability and diffusivity of the membranes. A long-term CO2 sorption analysis showed aging affected the sorption kinetics much more than the total equilibrium sorption. This was confirmed by permeation studies with six different gases, showing that the reduction of the permeability coefficient of the samples as a function of time is almost entirely due to a reduction of the diffusion coefficient. A renewed alcohol treatment of the aged membrane led to significant rejuvenation of the membrane. To the best of our knowledge, this is the first systematic long term aging study on PIM-1 via simultaneous analysis of sorption and permeation kinetics. Mixed gas permeation measurements with a CO2/CH4 mixture and an N-2/O-2/CO2 mixture confirm the excellent permselective properties of the PIM-1 membranes even after long aging. (C) 2017 Published by Elsevier Ltd.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymer
ISSN
0032-3861
e-ISSN
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Volume of the periodical
113
Issue of the periodical within the volume
neuveden
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
283-294
UT code for WoS article
000398430000029
EID of the result in the Scopus database
2-s2.0-85013661829