Development of polyimide membrane for gas permeation
Carbon molecular sieve (CMS) membranes were prepared using aromatic polyimide (P84) and polyvinylpyrrolidone (PVP) polymer blends. Spin coating of the polymer blends onto porous stainless steel substrate produced various polymeric membranes which were then pyrolysed at 400°C and 450°C under vacuum....
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sg-ntu-dr.10356-161872023-03-04T19:05:51Z Development of polyimide membrane for gas permeation Wong, Tian Yong. Lua Aik Chong School of Mechanical and Aerospace Engineering DRNTU::Engineering::Chemical engineering::Polymers and polymer manufacture Carbon molecular sieve (CMS) membranes were prepared using aromatic polyimide (P84) and polyvinylpyrrolidone (PVP) polymer blends. Spin coating of the polymer blends onto porous stainless steel substrate produced various polymeric membranes which were then pyrolysed at 400°C and 450°C under vacuum. The characteristics of the carbon structures and the gas permeation properties of the CMS membranes were investigated in terms of the weight percentage of PVP and the final pyrolysis temperature. Scanning electron microscopy (SEM) was employed to examine the structural morphologies of the CMS membranes. The results of this study indicated that the permeation rates of CO2 and O2 increased with the incremental content of PVP. This was due to the thermal labile PVP acting as a pore-forming agent in the CMS membranes during pyrolysis which provided an enhanced diffusional pathway through the CMS membranes for the gas molecules. Furthermore, increasing the pyrolysis temperature from 400°C to 450°C yielded increases in permeation rates of CO2 and O2. The selectivity of the CMS membranes was found to decrease with increasing weight percentage of PVP in the polymeric blend while the selectivity of the CMS membranes increased with final pyrolysis temperature. Bachelor of Engineering (Mechanical Engineering) 2009-05-22T04:40:07Z 2009-05-22T04:40:07Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/16187 en Nanyang Technological University 78 p. application/pdf |
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DRNTU::Engineering::Chemical engineering::Polymers and polymer manufacture Wong, Tian Yong. Development of polyimide membrane for gas permeation |
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Carbon molecular sieve (CMS) membranes were prepared using aromatic polyimide (P84) and polyvinylpyrrolidone (PVP) polymer blends. Spin coating of the polymer blends onto porous stainless steel substrate produced various polymeric membranes which were then pyrolysed at 400°C and 450°C under vacuum.
The characteristics of the carbon structures and the gas permeation properties of the CMS membranes were investigated in terms of the weight percentage of PVP and the final pyrolysis temperature. Scanning electron microscopy (SEM) was employed to examine the structural morphologies of the CMS membranes.
The results of this study indicated that the permeation rates of CO2 and O2 increased with the incremental content of PVP. This was due to the thermal labile PVP acting as a pore-forming agent in the CMS membranes during pyrolysis which provided an enhanced diffusional pathway through the CMS membranes for the gas molecules. Furthermore, increasing the pyrolysis temperature from 400°C to 450°C yielded increases in permeation rates of CO2 and O2. The selectivity of the CMS membranes was found to decrease with increasing weight percentage of PVP in the polymeric blend while the selectivity of the CMS membranes increased with final pyrolysis temperature. |
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Lua Aik Chong |
author_facet |
Lua Aik Chong Wong, Tian Yong. |
format |
Final Year Project |
author |
Wong, Tian Yong. |
author_sort |
Wong, Tian Yong. |
title |
Development of polyimide membrane for gas permeation |
title_short |
Development of polyimide membrane for gas permeation |
title_full |
Development of polyimide membrane for gas permeation |
title_fullStr |
Development of polyimide membrane for gas permeation |
title_full_unstemmed |
Development of polyimide membrane for gas permeation |
title_sort |
development of polyimide membrane for gas permeation |
publishDate |
2009 |
url |
http://hdl.handle.net/10356/16187 |
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1759857058002239488 |