Minimizing morphological defects of PEI hollow fibre membrane by optimizing the dope viscosity

Phase inversion processes have been used to fabricate hollow fibre membranes but these processes often lead to morphological defects such as formation of macrovoids. Thus far, several approaches have been investigated to solve this problem, but no consensuses have been achieved. In this study, the...

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Main Authors: Oh , P.C., Asif, J.
Format: Citation Index Journal
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.12279 /
Published: 2016
Online Access: http://eprints.utp.edu.my/12279/1/ARPN%20Journal%20of%20Engineering%20and%20Applied%20Sciences.pdf
http://eprints.utp.edu.my/12279/
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spelling utp-eprints.122792017-11-28T04:45:08Z Minimizing morphological defects of PEI hollow fibre membrane by optimizing the dope viscosity Oh , P.C. Asif, J. Phase inversion processes have been used to fabricate hollow fibre membranes but these processes often lead to morphological defects such as formation of macrovoids. Thus far, several approaches have been investigated to solve this problem, but no consensuses have been achieved. In this study, the optimal dope viscosity for PEI/NMP solution was elucidated to produce improved membrane morphological structure that can enhance its gas separation performance. Five concentrations of PEI/NMP dope solutions were prepared and their viscosities were measured. The critical viscosity was found to be at approximately 25 wt. % polymer concentration at ambient conditions. SEM analysis revealed that the most uniform finger-like pores with a thin skinned upper layer was obtained at critical dope viscosity. 2016 Citation Index Journal PeerReviewed application/pdf http://eprints.utp.edu.my/12279/1/ARPN%20Journal%20of%20Engineering%20and%20Applied%20Sciences.pdf Oh , P.C. and Asif, J. (2016) Minimizing morphological defects of PEI hollow fibre membrane by optimizing the dope viscosity. [Citation Index Journal] http://eprints.utp.edu.my/12279/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Phase inversion processes have been used to fabricate hollow fibre membranes but these processes often lead to morphological defects such as formation of macrovoids. Thus far, several approaches have been investigated to solve this problem, but no consensuses have been achieved. In this study, the optimal dope viscosity for PEI/NMP solution was elucidated to produce improved membrane morphological structure that can enhance its gas separation performance. Five concentrations of PEI/NMP dope solutions were prepared and their viscosities were measured. The critical viscosity was found to be at approximately 25 wt. % polymer concentration at ambient conditions. SEM analysis revealed that the most uniform finger-like pores with a thin skinned upper layer was obtained at critical dope viscosity.
format Citation Index Journal
author Oh , P.C.
Asif, J.
spellingShingle Oh , P.C.
Asif, J.
Minimizing morphological defects of PEI hollow fibre membrane by optimizing the dope viscosity
author_sort Oh , P.C.
title Minimizing morphological defects of PEI hollow fibre membrane by optimizing the dope viscosity
title_short Minimizing morphological defects of PEI hollow fibre membrane by optimizing the dope viscosity
title_full Minimizing morphological defects of PEI hollow fibre membrane by optimizing the dope viscosity
title_fullStr Minimizing morphological defects of PEI hollow fibre membrane by optimizing the dope viscosity
title_full_unstemmed Minimizing morphological defects of PEI hollow fibre membrane by optimizing the dope viscosity
title_sort minimizing morphological defects of pei hollow fibre membrane by optimizing the dope viscosity
publishDate 2016
url http://eprints.utp.edu.my/12279/1/ARPN%20Journal%20of%20Engineering%20and%20Applied%20Sciences.pdf
http://eprints.utp.edu.my/12279/
_version_ 1741196164370268160
score 11.62408

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