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Fabrication and Characterization of Polysulfone Membranes Coated with Polydimethysiloxane for Oxygen Enrichment

Category: Air Pollution and Health Effects

Article In Press
DOI: 10.4209/aaqr.2016.12.0571
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Kok Chung Chong 1, Soon Onn Lai1, Woei Jye Lau2, Hui San Thiam1, Ahmad Fauzi Ismail2, Abdul Karim Zulhairun2

  • 1 Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, 43300 Kajang, Malaysia
  • 2 Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia

Highlights

Polysulfone (PSF) membranes were fabricated with different bore fluid flow rates.
PSF membranes were coated with different concentrations of polydimethysiloxane.
Effects of bore fluid flow rate on separation properties were studied.
PSF membranes coated with PDMS showed improved performance.
The best performing membrane showed permeance of 73.12 GPU and selectivity of 4.56.


Abstract

This paper presented the application of polymeric membranes for oxygen/nitrogen (O2/N2) gas separation. Polysulfone (PSF) hollow fiber membranes were fabricated by phase inversion process using N,N-dimethylacetamide (DMAc) and tetrahydrofuran (THF) as co-solvent and ethanol as additive. The effects of bore fluid flow rate and polydimethysiloxane (PDMS) coating concentration on the separation characteristics of hollow fiber membranes were studied. Prior to gas permeation study, characterizations were performed to study the membrane morphology, its thickness and quality of PDMS coating layer on the membrane surface. It was found that the bore fluid flow rate played an important role for the O2/N2 separation as it could alter the membrane structure and dimension. The membrane fabricated with lower bore fluid flowrate exhibited better gas permeance and selectivity, owing to better structural integrity that favored the PDMS coating. The results indicated that the PSF hollow fiber membrane coated with optimum PDMS concentration could show greater O2/N2 gas permeability and selectivity relative to the PSF membrane without PDMS coating.

Keywords

Polysulfone Oxygen Nitrogen Gas separation Polydimethysiloxane Hollow fiber membrane


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Accepted Manuscripts
DOI: 10.4209/aaqr.2016.06.0222
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