Effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for CO2 and CH4 gas separation

Improper control of air gap interval during hollow fiber membranes (HFMs) spinning may lead to structural defects such as inner lumen deformations and macrovoids. In the current work, PVDF HFMs were prepared by manipulating air gap intervals at 5, 10, 15, 20, and 25 cm, using dry-wet spinning mechan...

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Main Authors: Ding, S.H., Oh, P.C., Jamil, A.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.29086 /
Published: Springer 2022
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126334001&doi=10.1007%2fs11814-022-1087-2&partnerID=40&md5=30d4b5f9abade9f16b92900393e2414c
http://eprints.utp.edu.my/29086/
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spelling utp-eprints.290862022-03-24T09:21:55Z Effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for CO2 and CH4 gas separation Ding, S.H. Oh, P.C. Jamil, A. Improper control of air gap interval during hollow fiber membranes (HFMs) spinning may lead to structural defects such as inner lumen deformations and macrovoids. In the current work, PVDF HFMs were prepared by manipulating air gap intervals at 5, 10, 15, 20, and 25 cm, using dry-wet spinning mechanism. The changes in its properties, including contact angle, mechanical strength, and most importantly the morphological structure that is usually crucial for gas separation performance have been determined. The morphology was evaluated using SEM, and the inner lumen defects of HFMs were reduced with the increment of air gap interval during the spinning process. Subsequently, the CO2 gas permeance was observed to increase from 5 to 15cm air gap distance and almost constant at 20 cm air gap interval, then increase tremendously beyond this point. Furthermore, CO2/CH4 ideal selectivity was observed to be improved and reached the highest end at PVDF-AG15 and dropped beyond this point. Therefore, varying air gap distance is considered as a practical approach for better gas separation. However, macrovoids will form if the air gap length is overlong. Thus, optimum air gap length during PVDF HFMs spinning is vital for morphology and gas separation performance. © 2022, The Korean Institute of Chemical Engineers. Springer 2022 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126334001&doi=10.1007%2fs11814-022-1087-2&partnerID=40&md5=30d4b5f9abade9f16b92900393e2414c Ding, S.H. and Oh, P.C. and Jamil, A. (2022) Effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for CO2 and CH4 gas separation. Korean Journal of Chemical Engineering . http://eprints.utp.edu.my/29086/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Improper control of air gap interval during hollow fiber membranes (HFMs) spinning may lead to structural defects such as inner lumen deformations and macrovoids. In the current work, PVDF HFMs were prepared by manipulating air gap intervals at 5, 10, 15, 20, and 25 cm, using dry-wet spinning mechanism. The changes in its properties, including contact angle, mechanical strength, and most importantly the morphological structure that is usually crucial for gas separation performance have been determined. The morphology was evaluated using SEM, and the inner lumen defects of HFMs were reduced with the increment of air gap interval during the spinning process. Subsequently, the CO2 gas permeance was observed to increase from 5 to 15cm air gap distance and almost constant at 20 cm air gap interval, then increase tremendously beyond this point. Furthermore, CO2/CH4 ideal selectivity was observed to be improved and reached the highest end at PVDF-AG15 and dropped beyond this point. Therefore, varying air gap distance is considered as a practical approach for better gas separation. However, macrovoids will form if the air gap length is overlong. Thus, optimum air gap length during PVDF HFMs spinning is vital for morphology and gas separation performance. © 2022, The Korean Institute of Chemical Engineers.
format Article
author Ding, S.H.
Oh, P.C.
Jamil, A.
spellingShingle Ding, S.H.
Oh, P.C.
Jamil, A.
Effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for CO2 and CH4 gas separation
author_sort Ding, S.H.
title Effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for CO2 and CH4 gas separation
title_short Effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for CO2 and CH4 gas separation
title_full Effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for CO2 and CH4 gas separation
title_fullStr Effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for CO2 and CH4 gas separation
title_full_unstemmed Effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for CO2 and CH4 gas separation
title_sort effect of air gap interval on polyvinylidene fluoride hollow fiber membrane spinning for co2 and ch4 gas separation
publisher Springer
publishDate 2022
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126334001&doi=10.1007%2fs11814-022-1087-2&partnerID=40&md5=30d4b5f9abade9f16b92900393e2414c
http://eprints.utp.edu.my/29086/
_version_ 1741197186363817984
score 11.62408

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