Effect of sintering temperature on the morphology and mechanical properties of PTFE membranes as a base substrate for proton exchange membrane
This paper reports the development of PTFE membranes as the base substrates for producing proton exchange membrane by using radiation-grafting technique. An aqueous dispersion of PTFE, which includes sodium benzoate, is cast in order to form suitable membranes. The casting was done by usinga pneumat...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Prince of Songkla University
2002-11-01
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| Series: | Songklanakarin Journal of Science and Technology (SJST) |
| Subjects: | |
| Online Access: | http://www.sjst.psu.ac.th/journal/24_Suppl_membrane/08proton.pdf |
| _version_ | 1811308302144897024 |
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| author | Nor Aida Zubir Ahmad Fauzi Ismail |
| author_facet | Nor Aida Zubir Ahmad Fauzi Ismail |
| author_sort | Nor Aida Zubir |
| collection | DOAJ |
| description | This paper reports the development of PTFE membranes as the base substrates for producing proton exchange membrane by using radiation-grafting technique. An aqueous dispersion of PTFE, which includes sodium benzoate, is cast in order to form suitable membranes. The casting was done by usinga pneumatically controlled flat sheet membrane-casting machine. The membrane is then sintered to fuse the polymer particles and cooled. After cooling process, the salt crystals are leached from the membrane by dissolution in hot bath to leave a microporous structure, which is suitable for such uses as a filtration membrane or as a base substrate for radiation grafted membrane in PEMFC. The effects of sintering temperature on the membrane morphology and tensile strength were investigated at 350oC and 385oC by using scanning electron microscopy (SEM) and EX 20, respectively. The pore size and total void space are significantly smaller at higher sintering temperature employed with an average pore diameter of 11.78 nm. The tensile strength and tensile strain of sintered PTFE membrane at 385oC are approximately 19.02 + 1.46 MPa and 351.04 + 23.13 %, respectively. These results were indicated at 385oC, which represents significant improvements in tensile strength and tensile strain, which are nearly twice those at 350oC. |
| first_indexed | 2024-04-13T09:19:40Z |
| format | Article |
| id | doaj.art-3b2fbacf7a3f495b99079a002048ecf3 |
| institution | Directory Open Access Journal |
| issn | 0125-3395 |
| language | English |
| last_indexed | 2024-04-13T09:19:40Z |
| publishDate | 2002-11-01 |
| publisher | Prince of Songkla University |
| record_format | Article |
| series | Songklanakarin Journal of Science and Technology (SJST) |
| spelling | doaj.art-3b2fbacf7a3f495b99079a002048ecf32022-12-22T02:52:37ZengPrince of Songkla UniversitySongklanakarin Journal of Science and Technology (SJST)0125-33952002-11-0124Suppl.823831Effect of sintering temperature on the morphology and mechanical properties of PTFE membranes as a base substrate for proton exchange membraneNor Aida ZubirAhmad Fauzi IsmailThis paper reports the development of PTFE membranes as the base substrates for producing proton exchange membrane by using radiation-grafting technique. An aqueous dispersion of PTFE, which includes sodium benzoate, is cast in order to form suitable membranes. The casting was done by usinga pneumatically controlled flat sheet membrane-casting machine. The membrane is then sintered to fuse the polymer particles and cooled. After cooling process, the salt crystals are leached from the membrane by dissolution in hot bath to leave a microporous structure, which is suitable for such uses as a filtration membrane or as a base substrate for radiation grafted membrane in PEMFC. The effects of sintering temperature on the membrane morphology and tensile strength were investigated at 350oC and 385oC by using scanning electron microscopy (SEM) and EX 20, respectively. The pore size and total void space are significantly smaller at higher sintering temperature employed with an average pore diameter of 11.78 nm. The tensile strength and tensile strain of sintered PTFE membrane at 385oC are approximately 19.02 + 1.46 MPa and 351.04 + 23.13 %, respectively. These results were indicated at 385oC, which represents significant improvements in tensile strength and tensile strain, which are nearly twice those at 350oC.http://www.sjst.psu.ac.th/journal/24_Suppl_membrane/08proton.pdfproton exchange membranesintering temperatureradiation-grafted membrane |
| spellingShingle | Nor Aida Zubir Ahmad Fauzi Ismail Effect of sintering temperature on the morphology and mechanical properties of PTFE membranes as a base substrate for proton exchange membrane Songklanakarin Journal of Science and Technology (SJST) proton exchange membrane sintering temperature radiation-grafted membrane |
| title | Effect of sintering temperature on the morphology and mechanical properties of PTFE membranes as a base substrate for proton exchange membrane |
| title_full | Effect of sintering temperature on the morphology and mechanical properties of PTFE membranes as a base substrate for proton exchange membrane |
| title_fullStr | Effect of sintering temperature on the morphology and mechanical properties of PTFE membranes as a base substrate for proton exchange membrane |
| title_full_unstemmed | Effect of sintering temperature on the morphology and mechanical properties of PTFE membranes as a base substrate for proton exchange membrane |
| title_short | Effect of sintering temperature on the morphology and mechanical properties of PTFE membranes as a base substrate for proton exchange membrane |
| title_sort | effect of sintering temperature on the morphology and mechanical properties of ptfe membranes as a base substrate for proton exchange membrane |
| topic | proton exchange membrane sintering temperature radiation-grafted membrane |
| url | http://www.sjst.psu.ac.th/journal/24_Suppl_membrane/08proton.pdf |
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