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Title: Effects of coating solvent and thermal treatment on transport and morphological characteristics of PDMS / T orlon composite hollow fiber membrane

Abstract

ABSTRACT A new approach for formation of the polydimethylsiloxane (PDMS) layer on Torlon polyamide‐imide hollow fiber (PAI‐HF) support has been developed by directly after fiber spinning without the need to undergo the final conventional solvent exchange and drying step, thereby saving postspinning processing steps. The produced PDMS/PAI‐HF composite membranes were found to have high CO 2 permeance (i.e., 1100 GPU) and exhibited good CO 2 /N 2 selectivities of 8–10 which is close to 90% of that of a PDMS dense film. The effects of coating solution, rewetting and crosslinking temperature on the PAI‐HF morphological features, that is, gas transport, skin thickness, skin integrity, and substructure resistance are investigated. The rewetting and thermal treatment of the PAI‐HF caused the densification of the skin layer and reduced the pore sizes on the top layer. In addition, the potential use of the PAI‐HF support with polymers that are insoluble in hexane is also considered. Effects of water, methanol, and hexane exposure of PAI‐HF to these solvents are considered. This evaluation calls attention to issues that must be addressed in any eventual use of the PAI‐HF with water‐soluble or methanol‐soluble selective layer polymers, rather than simple hexane‐soluble polymers such as PDMS. © 2017more » Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45418.« less

Authors:
ORCiD logo [1];  [2];  [3];  [3]
  1. Department of Chemical and Biochemical Engineering Missouri University of Science and Technology 1401 N Pine Street Rolla Missouri 65409, School of Chemical and Biomolecular Engineering Georgia Institute of Technology 311 Ferst Drive NW Atlanta Georgia 30332
  2. General Electric Global Research Center 1 Research Circle Niskayuna New York 12309
  3. School of Chemical and Biomolecular Engineering Georgia Institute of Technology 311 Ferst Drive NW Atlanta Georgia 30332
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1374091
Grant/Contract Number:  
DE‐FE0007514
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Journal of Applied Polymer Science
Additional Journal Information:
Journal Name: Journal of Applied Polymer Science Journal Volume: 134 Journal Issue: 42; Journal ID: ISSN 0021-8995
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
United States
Language:
English

Citation Formats

Rownaghi, Ali A., Bhandari, Dhaval, Burgess, Steven K., and Mikkilineni, Dharmik S. Effects of coating solvent and thermal treatment on transport and morphological characteristics of PDMS / T orlon composite hollow fiber membrane. United States: N. p., 2017. Web. doi:10.1002/app.45418.
Rownaghi, Ali A., Bhandari, Dhaval, Burgess, Steven K., & Mikkilineni, Dharmik S. Effects of coating solvent and thermal treatment on transport and morphological characteristics of PDMS / T orlon composite hollow fiber membrane. United States. https://doi.org/10.1002/app.45418
Rownaghi, Ali A., Bhandari, Dhaval, Burgess, Steven K., and Mikkilineni, Dharmik S. Fri . "Effects of coating solvent and thermal treatment on transport and morphological characteristics of PDMS / T orlon composite hollow fiber membrane". United States. https://doi.org/10.1002/app.45418.
@article{osti_1374091,
title = {Effects of coating solvent and thermal treatment on transport and morphological characteristics of PDMS / T orlon composite hollow fiber membrane},
author = {Rownaghi, Ali A. and Bhandari, Dhaval and Burgess, Steven K. and Mikkilineni, Dharmik S.},
abstractNote = {ABSTRACT A new approach for formation of the polydimethylsiloxane (PDMS) layer on Torlon polyamide‐imide hollow fiber (PAI‐HF) support has been developed by directly after fiber spinning without the need to undergo the final conventional solvent exchange and drying step, thereby saving postspinning processing steps. The produced PDMS/PAI‐HF composite membranes were found to have high CO 2 permeance (i.e., 1100 GPU) and exhibited good CO 2 /N 2 selectivities of 8–10 which is close to 90% of that of a PDMS dense film. The effects of coating solution, rewetting and crosslinking temperature on the PAI‐HF morphological features, that is, gas transport, skin thickness, skin integrity, and substructure resistance are investigated. The rewetting and thermal treatment of the PAI‐HF caused the densification of the skin layer and reduced the pore sizes on the top layer. In addition, the potential use of the PAI‐HF support with polymers that are insoluble in hexane is also considered. Effects of water, methanol, and hexane exposure of PAI‐HF to these solvents are considered. This evaluation calls attention to issues that must be addressed in any eventual use of the PAI‐HF with water‐soluble or methanol‐soluble selective layer polymers, rather than simple hexane‐soluble polymers such as PDMS. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45418.},
doi = {10.1002/app.45418},
journal = {Journal of Applied Polymer Science},
number = 42,
volume = 134,
place = {United States},
year = {Fri Jun 23 00:00:00 EDT 2017},
month = {Fri Jun 23 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1002/app.45418

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Cited by: 13 works
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