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Structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes

Structure-property relationships in poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid (PTFE-g-PSSA) membranes prepared by radiation-induced grafting of styrene onto poly(tetrafluoroethylene)(PTFE) films using simultaneous radiation-induced grafting followed by sulfonation reaction were estab...

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Main Authors: Nasef, Mohamed Mahmoud, Saidi, Hamdani
Format: Conference or Workshop Item
Published: 2004
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T Technology (General)
Online Access:http://eprints.utm.my/id/eprint/6237/
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spelling my.utm.62372017-09-06T06:35:48Z http://eprints.utm.my/id/eprint/6237/ Structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes Nasef, Mohamed Mahmoud Saidi, Hamdani T Technology (General) Structure-property relationships in poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid (PTFE-g-PSSA) membranes prepared by radiation-induced grafting of styrene onto poly(tetrafluoroethylene)(PTFE) films using simultaneous radiation-induced grafting followed by sulfonation reaction were established. The physico-chemical properties of the membranes such as ion exchange capacity, water uptake (swelling) and ionic conductivity were investigated in correlation with the degree of grafting (the amount sulfonated polystyrene grafted therein) and the structural changes taking place in the membrane matrix during the preparation step. The variation in the crystallinity of membranes was studied by differential scanning calorimetry (DSC). The membrane thermal stability was investigated using thermogravimetric analysis (TGA), ion exchange capacity and water uptake measurements. The membranes were found to undergo substantial structural changes in a form of ionic sites increase, hydrophicity enhancement, hydrophobicity reduction and crystallinity decrease with the increase in the degree of grafting. The all four factors were found to have a collective effect on the physico-chemical properties of the membranes but their relative contribution depends on the degree of grafting. 2004 Conference or Workshop Item PeerReviewed Nasef, Mohamed Mahmoud and Saidi, Hamdani (2004) Structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes. In: Regional Symposium on Membrane Science and Technology 2004, 21-25 April 2004, Puteri Pan Pacific Hotel, Johor Bahru, Johor, Malaysia.
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic T Technology (General)
spellingShingle T Technology (General)
Nasef, Mohamed Mahmoud
Saidi, Hamdani
Structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes
description Structure-property relationships in poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid (PTFE-g-PSSA) membranes prepared by radiation-induced grafting of styrene onto poly(tetrafluoroethylene)(PTFE) films using simultaneous radiation-induced grafting followed by sulfonation reaction were established. The physico-chemical properties of the membranes such as ion exchange capacity, water uptake (swelling) and ionic conductivity were investigated in correlation with the degree of grafting (the amount sulfonated polystyrene grafted therein) and the structural changes taking place in the membrane matrix during the preparation step. The variation in the crystallinity of membranes was studied by differential scanning calorimetry (DSC). The membrane thermal stability was investigated using thermogravimetric analysis (TGA), ion exchange capacity and water uptake measurements. The membranes were found to undergo substantial structural changes in a form of ionic sites increase, hydrophicity enhancement, hydrophobicity reduction and crystallinity decrease with the increase in the degree of grafting. The all four factors were found to have a collective effect on the physico-chemical properties of the membranes but their relative contribution depends on the degree of grafting.
format Conference or Workshop Item
author Nasef, Mohamed Mahmoud
Saidi, Hamdani
author_facet Nasef, Mohamed Mahmoud
Saidi, Hamdani
author_sort Nasef, Mohamed Mahmoud
title Structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes
title_short Structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes
title_full Structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes
title_fullStr Structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes
title_full_unstemmed Structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes
title_sort structure-property relationships in radiation grafted poly(tetrafluoroethylene)-graft-polystyrene sulfonic acid membranes
publishDate 2004
url http://eprints.utm.my/id/eprint/6237/
_version_ 1643644510286118912
score 13.211869

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