Selectivity as a function of membrane thickness: Gas separation and pervaporation
In this article, the pervaporation selectivity as a function of the membrane thickness is studied for the dehydration of acetic acid. From this study, it appeared that the selectivity of polysulfone (PSF), poly(vinyl chloride) (PVC), and polyacrylonitrile (PAN) decreases with decreasing membrane thi...
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| Veröffentlicht in: | Journal of applied polymer science 1994-09, Vol.53 (12), p.1639-1651 |
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| container_end_page | 1651 |
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| container_issue | 12 |
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| container_title | Journal of applied polymer science |
| container_volume | 53 |
| creator | Koops, G. H. Nolten, J. A. M. Mulder, M. H. V. Smolders, C. A. |
| description | In this article, the pervaporation selectivity as a function of the membrane thickness is studied for the dehydration of acetic acid. From this study, it appeared that the selectivity of polysulfone (PSF), poly(vinyl chloride) (PVC), and polyacrylonitrile (PAN) decreases with decreasing membrane thickness, below a limiting value of about 15 μm. However, in the case of gas separation, the selectivity of PSF membranes is independent of the membrane thickness. This phenomenon could not be explained by a difference in membrane morphology, sorption resistance, thermodynamic interaction, or coupling. It is believed that the decrease in selectivity for thin membranes has to be attributed to defects induced during pervaporation. These defects, crazes (and cracks), result from a reduced value of the critical strain, due to sorption of acetic acid/water and stresses between the polymer chains, due to a concentration gradient across the membrane. © 1994 John Wiley & Sons, Inc. |
| doi_str_mv | 10.1002/app.1994.070531210 |
| format | Article |
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These defects, crazes (and cracks), result from a reduced value of the critical strain, due to sorption of acetic acid/water and stresses between the polymer chains, due to a concentration gradient across the membrane. © 1994 John Wiley & Sons, Inc.</description><identifier>ISSN: 0021-8995</identifier><identifier>EISSN: 1097-4628</identifier><identifier>DOI: 10.1002/app.1994.070531210</identifier><identifier>CODEN: JAPNAB</identifier><language>eng</language><publisher>New York: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Applied sciences ; Exact sciences and technology ; Exchange resins and membranes ; Forms of application and semi-finished materials ; Polymer industry, paints, wood ; Technology of polymers</subject><ispartof>Journal of applied polymer science, 1994-09, Vol.53 (12), p.1639-1651</ispartof><rights>Copyright © 1994 John Wiley & Sons, Inc.</rights><rights>1994 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4450-a0557596eff909f7df2a8febcc63ddf1e5caa3c71599851bed97111fcd749d673</citedby><cites>FETCH-LOGICAL-c4450-a0557596eff909f7df2a8febcc63ddf1e5caa3c71599851bed97111fcd749d673</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fapp.1994.070531210$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fapp.1994.070531210$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4191499$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Koops, G. 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It is believed that the decrease in selectivity for thin membranes has to be attributed to defects induced during pervaporation. These defects, crazes (and cracks), result from a reduced value of the critical strain, due to sorption of acetic acid/water and stresses between the polymer chains, due to a concentration gradient across the membrane. © 1994 John Wiley & Sons, Inc.</description><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>Exchange resins and membranes</subject><subject>Forms of application and semi-finished materials</subject><subject>Polymer industry, paints, wood</subject><subject>Technology of polymers</subject><issn>0021-8995</issn><issn>1097-4628</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><recordid>eNqNkFFLwzAQx4MoOKdfwKc8-NqZa5umEV_G0KkMnagMfAm3NMG6ritJne7bm1kZPvp03PH73SV_Qk6BDYCx-BybZgBSpgMmGE8gBrZHesCkiNIszvdJL0AQ5VLyQ3Lk_TtjAJxlPfL4ZCqj23JdthuKniK1H3XoVzVdWbo0y7nD2tD2rdSL2nh_QceB8qZBhz8U1gVtjFtjs-omx-TAYuXNyW_tk5frq-fRTTR5GN-OhpNIpylnETLOBZeZsVYyaUVhY8ytmWudJUVhwXCNmGgBXMqcw9wUUgCA1YVIZZGJpE_ibq92K--dsapx5RLdRgFT21BUCEVtQ1G7UIJ01kkNeo2VDZ_Tpd-ZKUhIpQzYZYd9lpXZ_GOxGk6nf69EnV761nztdHQLFR4uuJrdj1U8e03iu1woSL4B986EGg</recordid><startdate>19940919</startdate><enddate>19940919</enddate><creator>Koops, G. 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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Applied sciences Exact sciences and technology Exchange resins and membranes Forms of application and semi-finished materials Polymer industry, paints, wood Technology of polymers |
| title | Selectivity as a function of membrane thickness: Gas separation and pervaporation |
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