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Morphology evolution of poly(vinylidene fluoride) membranes during supercritical CO2 assisted phase inversion
A supercritical carbon dioxide (ScCO 2 ) assisted phase inversion was developed to produce microporous poly(vinylidene fluoride) (PVDF) membranes whose morphology characteristics arise from both liquid-liquid demixing and solid-liquid demixing (crystallization). This result was confirmed by Fourier...
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| Published in: | Chinese journal of polymer science 2014-12, Vol.32 (12), p.1628-1638 |
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| Main Authors: | , , , , |
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| cites | cdi_FETCH-LOGICAL-c288t-7bb96ccf85fdc141efe67e9bfecbc5bdea20be24c0f2c4c312017457899380f23 |
| container_end_page | 1638 |
| container_issue | 12 |
| container_start_page | 1628 |
| container_title | Chinese journal of polymer science |
| container_volume | 32 |
| creator | Xiang, Yan-hui Liu, Fu Xue, Li-xin Shen, Jian-hui Lin, Hai-bo |
| description | A supercritical carbon dioxide (ScCO
2
) assisted phase inversion was developed to produce microporous poly(vinylidene fluoride) (PVDF) membranes whose morphology characteristics arise from both liquid-liquid demixing and solid-liquid demixing (crystallization). This result was confirmed by Fourier transform infrared spectroscopy (FTIR), from which both α and β crystals were found. As revealed by contact angle experiment, the PVDF membranes prepared
via
ScCO
2
assisted phase inversion were more hydrophobic compared with the control membrane produced
via
conventional immersion-precipitation technique. In particular, the sample with 15 wt% PVDF prepared at 45 °C and 13 MPa exhibited a contact angle of 142°, which was mainly caused by the multilevel micro- and nano-structure. The effects of polyethylene glycol (PEG), polyvinyl pyrrolidone (PVP) and lithium chloride (LiCl) on the structures and crystal form were investigated. PVP promoted the formation of α phase crystal form, while PEG boosts the evolution of β phase. LiCl restrained the crystallization degree of PVDF membrane under ScCO
2
. |
| doi_str_mv | 10.1007/s10118-014-1554-2 |
| format | article |
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2
) assisted phase inversion was developed to produce microporous poly(vinylidene fluoride) (PVDF) membranes whose morphology characteristics arise from both liquid-liquid demixing and solid-liquid demixing (crystallization). This result was confirmed by Fourier transform infrared spectroscopy (FTIR), from which both α and β crystals were found. As revealed by contact angle experiment, the PVDF membranes prepared
via
ScCO
2
assisted phase inversion were more hydrophobic compared with the control membrane produced
via
conventional immersion-precipitation technique. In particular, the sample with 15 wt% PVDF prepared at 45 °C and 13 MPa exhibited a contact angle of 142°, which was mainly caused by the multilevel micro- and nano-structure. The effects of polyethylene glycol (PEG), polyvinyl pyrrolidone (PVP) and lithium chloride (LiCl) on the structures and crystal form were investigated. PVP promoted the formation of α phase crystal form, while PEG boosts the evolution of β phase. LiCl restrained the crystallization degree of PVDF membrane under ScCO
2
.</description><identifier>ISSN: 0256-7679</identifier><identifier>EISSN: 1439-6203</identifier><identifier>DOI: 10.1007/s10118-014-1554-2</identifier><language>eng</language><publisher>Heidelberg: Chinese Chemical Society and Institute of Chemistry, CAS</publisher><subject>Characterization and Evaluation of Materials ; Chemistry ; Chemistry and Materials Science ; Condensed Matter Physics ; Industrial Chemistry/Chemical Engineering ; Polymer Sciences</subject><ispartof>Chinese journal of polymer science, 2014-12, Vol.32 (12), p.1628-1638</ispartof><rights>Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2014</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c288t-7bb96ccf85fdc141efe67e9bfecbc5bdea20be24c0f2c4c312017457899380f23</citedby><cites>FETCH-LOGICAL-c288t-7bb96ccf85fdc141efe67e9bfecbc5bdea20be24c0f2c4c312017457899380f23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27923,27924</link.rule.ids></links><search><creatorcontrib>Xiang, Yan-hui</creatorcontrib><creatorcontrib>Liu, Fu</creatorcontrib><creatorcontrib>Xue, Li-xin</creatorcontrib><creatorcontrib>Shen, Jian-hui</creatorcontrib><creatorcontrib>Lin, Hai-bo</creatorcontrib><title>Morphology evolution of poly(vinylidene fluoride) membranes during supercritical CO2 assisted phase inversion</title><title>Chinese journal of polymer science</title><addtitle>Chin J Polym Sci</addtitle><description>A supercritical carbon dioxide (ScCO
2
) assisted phase inversion was developed to produce microporous poly(vinylidene fluoride) (PVDF) membranes whose morphology characteristics arise from both liquid-liquid demixing and solid-liquid demixing (crystallization). This result was confirmed by Fourier transform infrared spectroscopy (FTIR), from which both α and β crystals were found. As revealed by contact angle experiment, the PVDF membranes prepared
via
ScCO
2
assisted phase inversion were more hydrophobic compared with the control membrane produced
via
conventional immersion-precipitation technique. In particular, the sample with 15 wt% PVDF prepared at 45 °C and 13 MPa exhibited a contact angle of 142°, which was mainly caused by the multilevel micro- and nano-structure. The effects of polyethylene glycol (PEG), polyvinyl pyrrolidone (PVP) and lithium chloride (LiCl) on the structures and crystal form were investigated. PVP promoted the formation of α phase crystal form, while PEG boosts the evolution of β phase. LiCl restrained the crystallization degree of PVDF membrane under ScCO
2
.</description><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Condensed Matter Physics</subject><subject>Industrial Chemistry/Chemical Engineering</subject><subject>Polymer Sciences</subject><issn>0256-7679</issn><issn>1439-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LxDAQhoMouK7-AG856iGapEnTHmXxC1b2oufQppPdLG1Sknah_96W9expXgael5kHoXtGnxil6jkxylhBKBOESSkIv0ArJrKS5Jxml2hFucyJylV5jW5SOlKaCyXVCnVfIfaH0Ib9hOEU2nFwweNgcR_a6eHk_NS6Bjxg244hzvERd9DVsfKQcDNG5_c4jT1EE93gTNXizY7jKiWXBmhwf6gSYOdPENNcfIuubNUmuPuba_Tz9vq9-SDb3fvn5mVLDC-Kgai6LnNjbCFtY5hgYCFXUNYWTG1k3UDFaQ1cGGq5ESZjnDIlpCrKMivmXbZG7NxrYkgpgtV9dF0VJ82oXnzpsy89-9KLL70w_MykfvkKoj6GMfr5zH-gX_GVcWo</recordid><startdate>20141201</startdate><enddate>20141201</enddate><creator>Xiang, Yan-hui</creator><creator>Liu, Fu</creator><creator>Xue, Li-xin</creator><creator>Shen, Jian-hui</creator><creator>Lin, Hai-bo</creator><general>Chinese Chemical Society and Institute of Chemistry, CAS</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20141201</creationdate><title>Morphology evolution of poly(vinylidene fluoride) membranes during supercritical CO2 assisted phase inversion</title><author>Xiang, Yan-hui ; Liu, Fu ; Xue, Li-xin ; Shen, Jian-hui ; Lin, Hai-bo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c288t-7bb96ccf85fdc141efe67e9bfecbc5bdea20be24c0f2c4c312017457899380f23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Condensed Matter Physics</topic><topic>Industrial Chemistry/Chemical Engineering</topic><topic>Polymer Sciences</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xiang, Yan-hui</creatorcontrib><creatorcontrib>Liu, Fu</creatorcontrib><creatorcontrib>Xue, Li-xin</creatorcontrib><creatorcontrib>Shen, Jian-hui</creatorcontrib><creatorcontrib>Lin, Hai-bo</creatorcontrib><collection>CrossRef</collection><jtitle>Chinese journal of polymer science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xiang, Yan-hui</au><au>Liu, Fu</au><au>Xue, Li-xin</au><au>Shen, Jian-hui</au><au>Lin, Hai-bo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Morphology evolution of poly(vinylidene fluoride) membranes during supercritical CO2 assisted phase inversion</atitle><jtitle>Chinese journal of polymer science</jtitle><stitle>Chin J Polym Sci</stitle><date>2014-12-01</date><risdate>2014</risdate><volume>32</volume><issue>12</issue><spage>1628</spage><epage>1638</epage><pages>1628-1638</pages><issn>0256-7679</issn><eissn>1439-6203</eissn><abstract>A supercritical carbon dioxide (ScCO
2
) assisted phase inversion was developed to produce microporous poly(vinylidene fluoride) (PVDF) membranes whose morphology characteristics arise from both liquid-liquid demixing and solid-liquid demixing (crystallization). This result was confirmed by Fourier transform infrared spectroscopy (FTIR), from which both α and β crystals were found. As revealed by contact angle experiment, the PVDF membranes prepared
via
ScCO
2
assisted phase inversion were more hydrophobic compared with the control membrane produced
via
conventional immersion-precipitation technique. In particular, the sample with 15 wt% PVDF prepared at 45 °C and 13 MPa exhibited a contact angle of 142°, which was mainly caused by the multilevel micro- and nano-structure. The effects of polyethylene glycol (PEG), polyvinyl pyrrolidone (PVP) and lithium chloride (LiCl) on the structures and crystal form were investigated. PVP promoted the formation of α phase crystal form, while PEG boosts the evolution of β phase. LiCl restrained the crystallization degree of PVDF membrane under ScCO
2
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| source | Springer Link |
| subjects | Characterization and Evaluation of Materials Chemistry Chemistry and Materials Science Condensed Matter Physics Industrial Chemistry/Chemical Engineering Polymer Sciences |
| title | Morphology evolution of poly(vinylidene fluoride) membranes during supercritical CO2 assisted phase inversion |
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