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Effect of extrusion rate on morphology of Kaolin / Poly Ether Sulfone (PESf) membrane precursor

This study aims to investigate the influence of apparent viscosity induced by spinneret geometry and extrusion rate on morphology of Kaolin/PESf hollow fiber membranes. Different extrusion rates at two different rheology properties were introduced on a straight and conical spinneret resulting in var...

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Main Authors: Mohd Suffian Misaran, Rosalam Sarbatly, Awang Bono, M.M. Rahman
Format: Conference or Workshop Item
Language:English
Published: 2016
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:https://eprints.ums.edu.my/id/eprint/19422/1/Effect%20of%20extrusion%20rate%20on%20morphology%20of%20Kaolin.pdf
https://eprints.ums.edu.my/id/eprint/19422/
http://doi.org/10.1088/1757-899X/160/1/012013
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spelling my.ums.eprints.194222018-03-22T03:46:13Z https://eprints.ums.edu.my/id/eprint/19422/ Effect of extrusion rate on morphology of Kaolin / Poly Ether Sulfone (PESf) membrane precursor Mohd Suffian Misaran Rosalam Sarbatly Awang Bono M.M. Rahman TA Engineering (General). Civil engineering (General) This study aims to investigate the influence of apparent viscosity induced by spinneret geometry and extrusion rate on morphology of Kaolin/PESf hollow fiber membranes. Different extrusion rates at two different rheology properties were introduced on a straight and conical spinneret resulting in various shear rates. The hollow fiber membrane precursors were spun using the wet spinning method to decouple the effect of shear and elongation stress due to gravity stretched drawing. The morphology of the spun hollow fiber was observed under Scanning Electron Microscope (SEM) and the overall porosity were measured using mercury intrusion porosimeter. Shear rate and apparent viscosity at the tip of the spinneret annulus were simulated using a computational fluid dynamics package; solidworks floworks. Simulation data shows that extrusion rate increment increases the shear rate at the spinneret wall which in turn reduce the apparent viscosity; consistent with a non Newtonian shear thinning fluid behavior. Thus, the outer finger-like region grows as the shear rate increases. Also, overall porosity of hollow fiber membrane decreases with extrusion rate increment which is caused by better molecular orientation; resulting in denser hollow fiber membrane. Thin outer finger-like region is achieved at low shear experience of 109.55 s-1 via a straight spinneret. Increasing the extrusion rate; thus shear rate will cause outer finger-like region growth which is not desirable in a separation process. 2016 Conference or Workshop Item PeerReviewed text en https://eprints.ums.edu.my/id/eprint/19422/1/Effect%20of%20extrusion%20rate%20on%20morphology%20of%20Kaolin.pdf Mohd Suffian Misaran and Rosalam Sarbatly and Awang Bono and M.M. Rahman (2016) Effect of extrusion rate on morphology of Kaolin / Poly Ether Sulfone (PESf) membrane precursor. In: International Engineering Research and Innovation Symposium (IRIS), 24 - 25 November 2016, Kings Green Hotel Melaka, Malaysia. http://doi.org/10.1088/1757-899X/160/1/012013
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Mohd Suffian Misaran
Rosalam Sarbatly
Awang Bono
M.M. Rahman
Effect of extrusion rate on morphology of Kaolin / Poly Ether Sulfone (PESf) membrane precursor
description This study aims to investigate the influence of apparent viscosity induced by spinneret geometry and extrusion rate on morphology of Kaolin/PESf hollow fiber membranes. Different extrusion rates at two different rheology properties were introduced on a straight and conical spinneret resulting in various shear rates. The hollow fiber membrane precursors were spun using the wet spinning method to decouple the effect of shear and elongation stress due to gravity stretched drawing. The morphology of the spun hollow fiber was observed under Scanning Electron Microscope (SEM) and the overall porosity were measured using mercury intrusion porosimeter. Shear rate and apparent viscosity at the tip of the spinneret annulus were simulated using a computational fluid dynamics package; solidworks floworks. Simulation data shows that extrusion rate increment increases the shear rate at the spinneret wall which in turn reduce the apparent viscosity; consistent with a non Newtonian shear thinning fluid behavior. Thus, the outer finger-like region grows as the shear rate increases. Also, overall porosity of hollow fiber membrane decreases with extrusion rate increment which is caused by better molecular orientation; resulting in denser hollow fiber membrane. Thin outer finger-like region is achieved at low shear experience of 109.55 s-1 via a straight spinneret. Increasing the extrusion rate; thus shear rate will cause outer finger-like region growth which is not desirable in a separation process.
format Conference or Workshop Item
author Mohd Suffian Misaran
Rosalam Sarbatly
Awang Bono
M.M. Rahman
author_facet Mohd Suffian Misaran
Rosalam Sarbatly
Awang Bono
M.M. Rahman
author_sort Mohd Suffian Misaran
title Effect of extrusion rate on morphology of Kaolin / Poly Ether Sulfone (PESf) membrane precursor
title_short Effect of extrusion rate on morphology of Kaolin / Poly Ether Sulfone (PESf) membrane precursor
title_full Effect of extrusion rate on morphology of Kaolin / Poly Ether Sulfone (PESf) membrane precursor
title_fullStr Effect of extrusion rate on morphology of Kaolin / Poly Ether Sulfone (PESf) membrane precursor
title_full_unstemmed Effect of extrusion rate on morphology of Kaolin / Poly Ether Sulfone (PESf) membrane precursor
title_sort effect of extrusion rate on morphology of kaolin / poly ether sulfone (pesf) membrane precursor
publishDate 2016
url https://eprints.ums.edu.my/id/eprint/19422/1/Effect%20of%20extrusion%20rate%20on%20morphology%20of%20Kaolin.pdf
https://eprints.ums.edu.my/id/eprint/19422/
http://doi.org/10.1088/1757-899X/160/1/012013
_version_ 1760229579125948416
score 13.211869

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