Journal article
Physical aging of polyetherimide membranes
Journal of natural gas science and engineering, v 27(P2), pp 651-660
01 Nov 2015
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This paper presents a study of the physical aging of asymmetric polyetherimide (PEI) flat membranes. The effects of storage type (under vacuum, atmospheric air, and pure argon), the presence of polydimethylsiloxane (PDMS) coating, membrane heat-treatment temperature, and membrane-preparation PEI wt% on the physical aging were investigated over 240 days by monitoring CO2 permeance and CO2/CH4 selectivity of the membranes. The feed was a 10190 V/V CO2/CH4 binary gas mixture. Physical aging was quantified in terms of CO2 permeance ultimate change and aging time constant, as well as CO2/CH4 selectivity ultimate change and aging time constant. New first-order physical-aging models were proposed and shown to predict the physical aging accurately. This study indicates that physical aging decreases the permeance but increases the selectivity. The membranes age less when (a) they have a PDMS coating, (b) they are prepared with a higher PEI wt%, and (c) they have a higher annealing temperature, especially above the glass transition temperature. Membranes stored under vacuum age at a slower rate than those stored under atmospheric air or pure argon. (C) 2015 Elsevier B.V. All rights reserved.
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Details
- Title
- Physical aging of polyetherimide membranes
- Creators
- Ahmad Arabi Shamsabadi - Petroleum University of TechnologyReza Mosayyebi Behbahani - Petroleum University of TechnologyFarzad Seidi - Islamic Azad University Sanandaj BranchMasoud Soroush - Drexel University
- Publication Details
- Journal of natural gas science and engineering, v 27(P2), pp 651-660
- Publisher
- Elsevier
- Number of pages
- 10
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000367756100021
- Scopus ID
- 2-s2.0-84950118211
- Other Identifier
- 991019168413204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Energy & Fuels
- Engineering, Chemical