Preparation of polydimethylsiloxane-SiO2/PVDF-HFP mixed matrix membrane of enhanced wetting resistance for membrane gas absorption

Membrane gas absorption (MGA) has been widely used to separate CO2 from gas mixture attributed to its high interfacial area. In order to secure high absorption flux, the pores of the membrane need to be non-wetted. Currently, hydrophobic membrane suffers from severe pore wetting over prolonged perio...

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Main Authors: Toh, M.J., Oh, P.C., Chew, T.L., Ahmad, A.L.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.30087 /
Published: Elsevier B.V. 2020
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083337889&doi=10.1016%2fj.seppur.2020.116543&partnerID=40&md5=9ff84bf78e0af080021ded75cd93eb64
http://eprints.utp.edu.my/30087/
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spelling utp-eprints.300872022-03-25T06:33:59Z Preparation of polydimethylsiloxane-SiO2/PVDF-HFP mixed matrix membrane of enhanced wetting resistance for membrane gas absorption Toh, M.J. Oh, P.C. Chew, T.L. Ahmad, A.L. Membrane gas absorption (MGA) has been widely used to separate CO2 from gas mixture attributed to its high interfacial area. In order to secure high absorption flux, the pores of the membrane need to be non-wetted. Currently, hydrophobic membrane suffers from severe pore wetting over prolonged periods of operation. This has called for the enhancement of membrane hydrophobicity to suppress the tendency of pore wetting. In this work, highly hydrophobic PVDF-HFP membrane was synthesized using solvent additive i.e. polydimethylsiloxane-grafted-silica (PGS) via non-solvent induced phase separation. Results showed that mixed matrix membranes (MMMs) exhibited hierarchical structure composed of polymer spherulites due to delayed phase inversion. The embedment of nanoparticles in membrane matrix also contributed to the reduction of membrane's surface energy. As a result, MMMs achieved an improvement in wetting resistance with a water contact angle up to 149.87° at 3 wt of PGS nanoparticles. The CO2 absorption test using MEA as liquid absorbent showed that MMMs exhibited an enhancement in gas absorption flux owing to higher hydrophobicity. The CO2 absorption flux of pristine and MMMs was declined about 37 and 22, respectively during 150 h of operation. © 2020 Elsevier B.V. Elsevier B.V. 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083337889&doi=10.1016%2fj.seppur.2020.116543&partnerID=40&md5=9ff84bf78e0af080021ded75cd93eb64 Toh, M.J. and Oh, P.C. and Chew, T.L. and Ahmad, A.L. (2020) Preparation of polydimethylsiloxane-SiO2/PVDF-HFP mixed matrix membrane of enhanced wetting resistance for membrane gas absorption. Separation and Purification Technology, 244 . http://eprints.utp.edu.my/30087/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Membrane gas absorption (MGA) has been widely used to separate CO2 from gas mixture attributed to its high interfacial area. In order to secure high absorption flux, the pores of the membrane need to be non-wetted. Currently, hydrophobic membrane suffers from severe pore wetting over prolonged periods of operation. This has called for the enhancement of membrane hydrophobicity to suppress the tendency of pore wetting. In this work, highly hydrophobic PVDF-HFP membrane was synthesized using solvent additive i.e. polydimethylsiloxane-grafted-silica (PGS) via non-solvent induced phase separation. Results showed that mixed matrix membranes (MMMs) exhibited hierarchical structure composed of polymer spherulites due to delayed phase inversion. The embedment of nanoparticles in membrane matrix also contributed to the reduction of membrane's surface energy. As a result, MMMs achieved an improvement in wetting resistance with a water contact angle up to 149.87° at 3 wt of PGS nanoparticles. The CO2 absorption test using MEA as liquid absorbent showed that MMMs exhibited an enhancement in gas absorption flux owing to higher hydrophobicity. The CO2 absorption flux of pristine and MMMs was declined about 37 and 22, respectively during 150 h of operation. © 2020 Elsevier B.V.
format Article
author Toh, M.J.
Oh, P.C.
Chew, T.L.
Ahmad, A.L.
spellingShingle Toh, M.J.
Oh, P.C.
Chew, T.L.
Ahmad, A.L.
Preparation of polydimethylsiloxane-SiO2/PVDF-HFP mixed matrix membrane of enhanced wetting resistance for membrane gas absorption
author_sort Toh, M.J.
title Preparation of polydimethylsiloxane-SiO2/PVDF-HFP mixed matrix membrane of enhanced wetting resistance for membrane gas absorption
title_short Preparation of polydimethylsiloxane-SiO2/PVDF-HFP mixed matrix membrane of enhanced wetting resistance for membrane gas absorption
title_full Preparation of polydimethylsiloxane-SiO2/PVDF-HFP mixed matrix membrane of enhanced wetting resistance for membrane gas absorption
title_fullStr Preparation of polydimethylsiloxane-SiO2/PVDF-HFP mixed matrix membrane of enhanced wetting resistance for membrane gas absorption
title_full_unstemmed Preparation of polydimethylsiloxane-SiO2/PVDF-HFP mixed matrix membrane of enhanced wetting resistance for membrane gas absorption
title_sort preparation of polydimethylsiloxane-sio2/pvdf-hfp mixed matrix membrane of enhanced wetting resistance for membrane gas absorption
publisher Elsevier B.V.
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083337889&doi=10.1016%2fj.seppur.2020.116543&partnerID=40&md5=9ff84bf78e0af080021ded75cd93eb64
http://eprints.utp.edu.my/30087/
_version_ 1741197347554066432
score 11.62408

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