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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Main Author: Wong, Tian Yong.
Other Authors: Lua Aik Chong
Format: Final Year Project
Language:English
Published: 2009
Subjects:
Online Access:http://hdl.handle.net/10356/16187
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Institution: Nanyang Technological University
Language: English
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spelling 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
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Chemical engineering::Polymers and polymer manufacture
spellingShingle DRNTU::Engineering::Chemical engineering::Polymers and polymer manufacture
Wong, Tian Yong.
Development of polyimide membrane for gas permeation
description 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.
author2 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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