Enhancing hydrophilicity and permeation flux of chitosan/kaolin composite membranes by using polyethylene glycol as porogen
A novel chitosan/kaolin composite membrane with high flux and enhanced hydrophilicity was prepared by solvent casting and evaporation process in the presence of polyethylene glycol (PEG). The characterization of the as-fabricated membranes indicated that the combined effect of kaolin as reinforcing...
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Veröffentlicht in: | Applied clay science 2019-02, Vol.168, p.312-323 |
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creator | Rekik, Sonia Bouzid Gassara, Sana Bouaziz, Jamel Deratani, André Baklouti, Semia |
description | A novel chitosan/kaolin composite membrane with high flux and enhanced hydrophilicity was prepared by solvent casting and evaporation process in the presence of polyethylene glycol (PEG). The characterization of the as-fabricated membranes indicated that the combined effect of kaolin as reinforcing agent and PEG as porogen into a chitosan matrix showed significant influence on the morphology and hydrophilicity. Highly porous membranes with finger-like structure were obtained. Both size and density of the pores increased with increasing the PEG content from 0 to 3 wt%. The incorporation of the hydrophilic polymeric additive constructed a water channel network and increased the free volume within the composite matrix, contributing to the enhanced filtration performance of the resulting membrane. Additionally, their mechanical, thermal and chemical stability showed a large improvement compared to the unmodified one.
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•Chitosan/kaolin/PEG composite membranes were successfully prepared.•Thermal, chemical and mechanical properties are improved in composites.•A highly porous morphology was obtained.•Composites show better hydrophilicity and water flux than the pristine membranes. |
doi_str_mv | 10.1016/j.clay.2018.11.029 |
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•Chitosan/kaolin/PEG composite membranes were successfully prepared.•Thermal, chemical and mechanical properties are improved in composites.•A highly porous morphology was obtained.•Composites show better hydrophilicity and water flux than the pristine membranes.</description><identifier>ISSN: 0169-1317</identifier><identifier>EISSN: 1872-9053</identifier><identifier>DOI: 10.1016/j.clay.2018.11.029</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Biopolymer ; Chemical Sciences ; Clay composite membrane ; Filtration performance ; Finger-like morphology ; Renewable raw materials</subject><ispartof>Applied clay science, 2019-02, Vol.168, p.312-323</ispartof><rights>2018 Elsevier B.V.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c371t-8a8c9abf041ad08745750a1430d87aa64dd503fb9a72a7594dc929981173ea243</citedby><cites>FETCH-LOGICAL-c371t-8a8c9abf041ad08745750a1430d87aa64dd503fb9a72a7594dc929981173ea243</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.clay.2018.11.029$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://hal.umontpellier.fr/hal-03826717$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Rekik, Sonia Bouzid</creatorcontrib><creatorcontrib>Gassara, Sana</creatorcontrib><creatorcontrib>Bouaziz, Jamel</creatorcontrib><creatorcontrib>Deratani, André</creatorcontrib><creatorcontrib>Baklouti, Semia</creatorcontrib><title>Enhancing hydrophilicity and permeation flux of chitosan/kaolin composite membranes by using polyethylene glycol as porogen</title><title>Applied clay science</title><description>A novel chitosan/kaolin composite membrane with high flux and enhanced hydrophilicity was prepared by solvent casting and evaporation process in the presence of polyethylene glycol (PEG). The characterization of the as-fabricated membranes indicated that the combined effect of kaolin as reinforcing agent and PEG as porogen into a chitosan matrix showed significant influence on the morphology and hydrophilicity. Highly porous membranes with finger-like structure were obtained. Both size and density of the pores increased with increasing the PEG content from 0 to 3 wt%. The incorporation of the hydrophilic polymeric additive constructed a water channel network and increased the free volume within the composite matrix, contributing to the enhanced filtration performance of the resulting membrane. Additionally, their mechanical, thermal and chemical stability showed a large improvement compared to the unmodified one.
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•Chitosan/kaolin/PEG composite membranes were successfully prepared.•Thermal, chemical and mechanical properties are improved in composites.•A highly porous morphology was obtained.•Composites show better hydrophilicity and water flux than the pristine membranes.</description><subject>Biopolymer</subject><subject>Chemical Sciences</subject><subject>Clay composite membrane</subject><subject>Filtration performance</subject><subject>Finger-like morphology</subject><subject>Renewable raw materials</subject><issn>0169-1317</issn><issn>1872-9053</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kMFq3DAURUVpINM0P5CVtl3Y0ZPtkQTdhJA2hYFu2rV4I8ljTWXJSE6o6c_HZkqXXT243HPhHULugNXAYH9_rk3ApeYMZA1QM67ekR1IwSvFuuY92a0lVUED4pp8KOXMGHDZqR358xQHjMbHEx0Wm9M0-OCNnxeK0dLJ5dHh7FOkfXj5TVNPzeDnVDDe_8IUfKQmjVMqfnZ0dOMxY3SFHhf6UrbJKYXFzcMSXHT0FBaTAsWyxjmdXPxIrnoMxd3-vTfk55enH4_P1eH712-PD4fKNALmSqI0Co89awEtk6LtRMcQ2oZZKRD3rbUda_qjQsFRdKq1RnGlJIBoHPK2uSGfLrsDBj1lP2JedEKvnx8OestYI_legHiFtcsvXZNTKdn1_wBgelOtz3pTrTfVGkCvqlfo8wVy6xev3mVdjHfROOuzM7O2yf8PfwNLiIoE</recordid><startdate>20190201</startdate><enddate>20190201</enddate><creator>Rekik, Sonia Bouzid</creator><creator>Gassara, Sana</creator><creator>Bouaziz, Jamel</creator><creator>Deratani, André</creator><creator>Baklouti, Semia</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope></search><sort><creationdate>20190201</creationdate><title>Enhancing hydrophilicity and permeation flux of chitosan/kaolin composite membranes by using polyethylene glycol as porogen</title><author>Rekik, Sonia Bouzid ; Gassara, Sana ; Bouaziz, Jamel ; Deratani, André ; Baklouti, Semia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c371t-8a8c9abf041ad08745750a1430d87aa64dd503fb9a72a7594dc929981173ea243</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Biopolymer</topic><topic>Chemical Sciences</topic><topic>Clay composite membrane</topic><topic>Filtration performance</topic><topic>Finger-like morphology</topic><topic>Renewable raw materials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rekik, Sonia Bouzid</creatorcontrib><creatorcontrib>Gassara, Sana</creatorcontrib><creatorcontrib>Bouaziz, Jamel</creatorcontrib><creatorcontrib>Deratani, André</creatorcontrib><creatorcontrib>Baklouti, Semia</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Applied clay science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rekik, Sonia Bouzid</au><au>Gassara, Sana</au><au>Bouaziz, Jamel</au><au>Deratani, André</au><au>Baklouti, Semia</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhancing hydrophilicity and permeation flux of chitosan/kaolin composite membranes by using polyethylene glycol as porogen</atitle><jtitle>Applied clay science</jtitle><date>2019-02-01</date><risdate>2019</risdate><volume>168</volume><spage>312</spage><epage>323</epage><pages>312-323</pages><issn>0169-1317</issn><eissn>1872-9053</eissn><abstract>A novel chitosan/kaolin composite membrane with high flux and enhanced hydrophilicity was prepared by solvent casting and evaporation process in the presence of polyethylene glycol (PEG). The characterization of the as-fabricated membranes indicated that the combined effect of kaolin as reinforcing agent and PEG as porogen into a chitosan matrix showed significant influence on the morphology and hydrophilicity. Highly porous membranes with finger-like structure were obtained. Both size and density of the pores increased with increasing the PEG content from 0 to 3 wt%. The incorporation of the hydrophilic polymeric additive constructed a water channel network and increased the free volume within the composite matrix, contributing to the enhanced filtration performance of the resulting membrane. Additionally, their mechanical, thermal and chemical stability showed a large improvement compared to the unmodified one.
[Display omitted]
•Chitosan/kaolin/PEG composite membranes were successfully prepared.•Thermal, chemical and mechanical properties are improved in composites.•A highly porous morphology was obtained.•Composites show better hydrophilicity and water flux than the pristine membranes.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.clay.2018.11.029</doi><tpages>12</tpages></addata></record> |
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subjects | Biopolymer Chemical Sciences Clay composite membrane Filtration performance Finger-like morphology Renewable raw materials |
title | Enhancing hydrophilicity and permeation flux of chitosan/kaolin composite membranes by using polyethylene glycol as porogen |
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