Supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques

This study investigates the effect of heating on suppression of plasticization effect upon asymmetric hollow fiber polysulfone membranes for carbon dioxide/methane separation. The membranes were fabricated using polysulfone (Udel P1700) and heat treated before tested on pure methane and carbon dioxi...

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Main Author:	Azhari, Muhammad Azwar
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/78782/1/MuhamadAzwarAzhariMFPREE2012.pdf
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spelling	my-utm-ep.787822018-09-17T04:12:42Z Supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques 2012-05 Azhari, Muhammad Azwar TP Chemical technology This study investigates the effect of heating on suppression of plasticization effect upon asymmetric hollow fiber polysulfone membranes for carbon dioxide/methane separation. The membranes were fabricated using polysulfone (Udel P1700) and heat treated before tested on pure methane and carbon dioxide gases to study their gas separation characteristics. Constant temperature heating and progressive temperature heating were applied to the membranes. The produced membranes were then characterized by scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and fiber density calculation. Membranes treated with constant temperature heating exhibits lower pressure-normalize flux for both carbon dioxide and methane while their selectivity increased compared to untreated membranes. This was probably due to densification of membrane skin layer during heating process. Denser skin layer increases the resistance in the membrane which resulted in decreased of pressure-normalize flux. A higher density of membrane skin layer was achieved by progressive temperature heat treatment. This further increased the resistance in the membrane resulted in a lower value of pressure normalized-flux which surpasses the intrinsic value. The application of different feed pressure caused an almost linear value of CO2 and CH4 pressure-normalize flux were observed. This indicated that plasticization is successfully suppressed by heat treatment. At progressive heating to 90ºC, a modest pressure-normalized flux value of 0.16 GPU and 4.34 GPU were achieved for CH4 and CO2, respectively. It is also observed that the CO2/CH4 selectivity increases with increment of temperature for both type of heating. However, progressive heating to 90ºC shows a promising selectivity result of 27.06. From the results provided in this study, it can be concluded that plasticization of polysulfone hollow fiber membrane is successfully suppressed by heat treatment process. 2012-05 Thesis http://eprints.utm.my/id/eprint/78782/ http://eprints.utm.my/id/eprint/78782/1/MuhamadAzwarAzhariMFPREE2012.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:105906 masters Universiti Teknologi Malaysia, Faculty of Petroleum and Renewable Energy Engineering Faculty of Petroleum and Renewable Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Azhari, Muhammad Azwar Supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques
description	This study investigates the effect of heating on suppression of plasticization effect upon asymmetric hollow fiber polysulfone membranes for carbon dioxide/methane separation. The membranes were fabricated using polysulfone (Udel P1700) and heat treated before tested on pure methane and carbon dioxide gases to study their gas separation characteristics. Constant temperature heating and progressive temperature heating were applied to the membranes. The produced membranes were then characterized by scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and fiber density calculation. Membranes treated with constant temperature heating exhibits lower pressure-normalize flux for both carbon dioxide and methane while their selectivity increased compared to untreated membranes. This was probably due to densification of membrane skin layer during heating process. Denser skin layer increases the resistance in the membrane which resulted in decreased of pressure-normalize flux. A higher density of membrane skin layer was achieved by progressive temperature heat treatment. This further increased the resistance in the membrane resulted in a lower value of pressure normalized-flux which surpasses the intrinsic value. The application of different feed pressure caused an almost linear value of CO2 and CH4 pressure-normalize flux were observed. This indicated that plasticization is successfully suppressed by heat treatment. At progressive heating to 90ºC, a modest pressure-normalized flux value of 0.16 GPU and 4.34 GPU were achieved for CH4 and CO2, respectively. It is also observed that the CO2/CH4 selectivity increases with increment of temperature for both type of heating. However, progressive heating to 90ºC shows a promising selectivity result of 27.06. From the results provided in this study, it can be concluded that plasticization of polysulfone hollow fiber membrane is successfully suppressed by heat treatment process.
format	Thesis
qualification_level	Master's degree
author	Azhari, Muhammad Azwar
author_facet	Azhari, Muhammad Azwar
author_sort	Azhari, Muhammad Azwar
title	Supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques
title_short	Supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques
title_full	Supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques
title_fullStr	Supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques
title_full_unstemmed	Supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques
title_sort	supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques
granting_institution	Universiti Teknologi Malaysia, Faculty of Petroleum and Renewable Energy Engineering
granting_department	Faculty of Petroleum and Renewable Energy Engineering
publishDate	2012
url	http://eprints.utm.my/id/eprint/78782/1/MuhamadAzwarAzhariMFPREE2012.pdf
_version_	1747818069976154112

Supression of plasticization on assymetric hollow fiber polysulfone membrane using constant heating and progressive heating techniques

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