Macrovoids suppression in polyetherimide (Pei) hollow fibre membranes by optimizing the air gap

Asymmetric polyetherimide (PEI) hollow fibre membranes have been prepared by dry-wet phase inversion method in which N-methyl-2-pyrrolidone (NMP) was used as solvent whereas water was used as both internal and external solvent. The polymer dope solution contained 25 wt. of PEI and was spun at diffe...

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Main Authors: Jamil, A., Ching, O.P., Shariff, A.M.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.25304 /
Published: Research India Publications 2016
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048116647&partnerID=40&md5=76e255851b62ce1ef4da7c50632818ee
http://eprints.utp.edu.my/25304/
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spelling utp-eprints.253042021-08-27T12:57:16Z Macrovoids suppression in polyetherimide (Pei) hollow fibre membranes by optimizing the air gap Jamil, A. Ching, O.P. Shariff, A.M. Asymmetric polyetherimide (PEI) hollow fibre membranes have been prepared by dry-wet phase inversion method in which N-methyl-2-pyrrolidone (NMP) was used as solvent whereas water was used as both internal and external solvent. The polymer dope solution contained 25 wt. of PEI and was spun at different air gaps at ambient conditions. The air gap effect was analyzed based on the surface morphology of the membranes using scanning electron microscopy (SEM). At longer air gaps, due to the dominant dry processes, finger-like pores extended to the outer skin layer and larger macrovoids appeared under the skin layer which may result in poor separation performance. The wet process presided as air gap was reduced to zero, and the instant solidification created macrovoids under the outer skin layer. At 15 and 20 cm air gaps, optimum results were obtained with minimum macrovoids and uniform finger-like pores under the thin skin layer. © Research India Publications. Research India Publications 2016 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048116647&partnerID=40&md5=76e255851b62ce1ef4da7c50632818ee Jamil, A. and Ching, O.P. and Shariff, A.M. (2016) Macrovoids suppression in polyetherimide (Pei) hollow fibre membranes by optimizing the air gap. International Journal of Applied Engineering Research, 11 (19). pp. 9684-9688. http://eprints.utp.edu.my/25304/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Asymmetric polyetherimide (PEI) hollow fibre membranes have been prepared by dry-wet phase inversion method in which N-methyl-2-pyrrolidone (NMP) was used as solvent whereas water was used as both internal and external solvent. The polymer dope solution contained 25 wt. of PEI and was spun at different air gaps at ambient conditions. The air gap effect was analyzed based on the surface morphology of the membranes using scanning electron microscopy (SEM). At longer air gaps, due to the dominant dry processes, finger-like pores extended to the outer skin layer and larger macrovoids appeared under the skin layer which may result in poor separation performance. The wet process presided as air gap was reduced to zero, and the instant solidification created macrovoids under the outer skin layer. At 15 and 20 cm air gaps, optimum results were obtained with minimum macrovoids and uniform finger-like pores under the thin skin layer. © Research India Publications.
format Article
author Jamil, A.
Ching, O.P.
Shariff, A.M.
spellingShingle Jamil, A.
Ching, O.P.
Shariff, A.M.
Macrovoids suppression in polyetherimide (Pei) hollow fibre membranes by optimizing the air gap
author_sort Jamil, A.
title Macrovoids suppression in polyetherimide (Pei) hollow fibre membranes by optimizing the air gap
title_short Macrovoids suppression in polyetherimide (Pei) hollow fibre membranes by optimizing the air gap
title_full Macrovoids suppression in polyetherimide (Pei) hollow fibre membranes by optimizing the air gap
title_fullStr Macrovoids suppression in polyetherimide (Pei) hollow fibre membranes by optimizing the air gap
title_full_unstemmed Macrovoids suppression in polyetherimide (Pei) hollow fibre membranes by optimizing the air gap
title_sort macrovoids suppression in polyetherimide (pei) hollow fibre membranes by optimizing the air gap
publisher Research India Publications
publishDate 2016
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048116647&partnerID=40&md5=76e255851b62ce1ef4da7c50632818ee
http://eprints.utp.edu.my/25304/
_version_ 1741196952806096896
score 11.62408

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