Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.memsci.2007.04.045
Title: Investigation of corrugation phenomenon in the inner contour of hollow fibers during the non-solvent induced phase-separation process
Authors: Bonyadi, S. 
Chung, T.S. 
Krantz, W.B. 
Keywords: Buckling
Corrugated shape
Fiber spinning
Hollow fiber
Instability
Membrane formation
Phase-separation process
Issue Date: 1-Aug-2007
Source: Bonyadi, S., Chung, T.S., Krantz, W.B. (2007-08-01). Investigation of corrugation phenomenon in the inner contour of hollow fibers during the non-solvent induced phase-separation process. Journal of Membrane Science 299 (1-2) : 200-210. ScholarBank@NUS Repository. https://doi.org/10.1016/j.memsci.2007.04.045
Abstract: In this paper by proposing a novel mechanism, we reveal one of the most controversial issues in the hollow fiber fabrication process regarding the instability leading to the deformed cross-section of fibers fabricated through non-solvent induced phase separation. We have analyzed possible instability mechanisms based on our experimental observations and then postulated that the principal instability occurs in the external coagulation bath where the pressure induced in the nascent fiber outer layer as a result of diffusion/convection, precipitation, densification and shrinkage buckles the rigid precipitated polymer shell in the dope and bore fluid interface. In addition, the effect of some spinning conditions such as air-gap distance, bore fluid composition, take-up speed, external coagulant and dope concentration on the final shape of the fiber cross-section have been investigated. The proposed mechanism is in good qualitative agreement with all our observations. © 2007 Elsevier B.V. All rights reserved.
Source Title: Journal of Membrane Science
URI: http://scholarbank.nus.edu.sg/handle/10635/51786
ISSN: 03767388
DOI: 10.1016/j.memsci.2007.04.045
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

60
checked on Dec 14, 2017

WEB OF SCIENCETM
Citations

57
checked on Nov 17, 2017

Page view(s)

65
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.