Interfacial tension studies of crown ethers at air/water and hexane/water interfaces
The adsorption of phase transfer catalysts, 18-crown-6 and dicyclohexano-18-crown-6, at the air/water and the hexane/water interfaces were investigated. Interfacial tension σ decreased by increasing concentrations of these compounds and therefore both of these crown ethers are accumulated at interfa...
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| Veröffentlicht in: | Journal of colloid and interface science 2007-12, Vol.316 (1), p.25-30 |
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| container_title | Journal of colloid and interface science |
| container_volume | 316 |
| creator | Azizian, Saeid Kashimoto, Kaoru Matsuda, Takashi Matsubara, Hiroki Takiue, Takanori Aratono, Makoto |
| description | The adsorption of phase transfer catalysts, 18-crown-6 and dicyclohexano-18-crown-6, at the air/water and the hexane/water interfaces were investigated. Interfacial tension
σ decreased by increasing concentrations of these compounds and therefore both of these crown ethers are accumulated at interfaces. The variation of
σ with concentration for both compounds follows the Szyszkowski equation very well, from which the values of saturated surface densities and interaction parameters have been evaluated. On the basis of occupied surface area of each molecule, the orientation of each of molecules at the air/water and the hexane/water interfaces have been proposed. The present results show that dicyclohexano-18-crown-6 has the higher tendency not only to dissolve into the hexane phase but also to adsorb at the hexane/water interface than 18-crown-6 and that the Starks extraction mechanism was suggested for the present phase transfer catalysis systems. |
| doi_str_mv | 10.1016/j.jcis.2007.07.068 |
| format | Article |
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σ decreased by increasing concentrations of these compounds and therefore both of these crown ethers are accumulated at interfaces. The variation of
σ with concentration for both compounds follows the Szyszkowski equation very well, from which the values of saturated surface densities and interaction parameters have been evaluated. On the basis of occupied surface area of each molecule, the orientation of each of molecules at the air/water and the hexane/water interfaces have been proposed. The present results show that dicyclohexano-18-crown-6 has the higher tendency not only to dissolve into the hexane phase but also to adsorb at the hexane/water interface than 18-crown-6 and that the Starks extraction mechanism was suggested for the present phase transfer catalysis systems.</description><identifier>ISSN: 0021-9797</identifier><identifier>EISSN: 1095-7103</identifier><identifier>DOI: 10.1016/j.jcis.2007.07.068</identifier><identifier>PMID: 17714725</identifier><identifier>CODEN: JCISA5</identifier><language>eng</language><publisher>San Diego, CA: Elsevier Inc</publisher><subject>Catalysis ; Chemistry ; Colloidal state and disperse state ; Crown ether ; Exact sciences and technology ; General and physical chemistry ; Hexane/water interface ; Interfacial tension ; Phase transfer catalysis ; Surface physical chemistry ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><ispartof>Journal of colloid and interface science, 2007-12, Vol.316 (1), p.25-30</ispartof><rights>2007 Elsevier Inc.</rights><rights>2007 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c384t-b1d360b5c61ca5c5ec4c18d2040886320e9ec1d4217a552a37764e7b1758d3573</citedby><cites>FETCH-LOGICAL-c384t-b1d360b5c61ca5c5ec4c18d2040886320e9ec1d4217a552a37764e7b1758d3573</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S002197970701051X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19174446$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17714725$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Azizian, Saeid</creatorcontrib><creatorcontrib>Kashimoto, Kaoru</creatorcontrib><creatorcontrib>Matsuda, Takashi</creatorcontrib><creatorcontrib>Matsubara, Hiroki</creatorcontrib><creatorcontrib>Takiue, Takanori</creatorcontrib><creatorcontrib>Aratono, Makoto</creatorcontrib><title>Interfacial tension studies of crown ethers at air/water and hexane/water interfaces</title><title>Journal of colloid and interface science</title><addtitle>J Colloid Interface Sci</addtitle><description>The adsorption of phase transfer catalysts, 18-crown-6 and dicyclohexano-18-crown-6, at the air/water and the hexane/water interfaces were investigated. Interfacial tension
σ decreased by increasing concentrations of these compounds and therefore both of these crown ethers are accumulated at interfaces. The variation of
σ with concentration for both compounds follows the Szyszkowski equation very well, from which the values of saturated surface densities and interaction parameters have been evaluated. On the basis of occupied surface area of each molecule, the orientation of each of molecules at the air/water and the hexane/water interfaces have been proposed. The present results show that dicyclohexano-18-crown-6 has the higher tendency not only to dissolve into the hexane phase but also to adsorb at the hexane/water interface than 18-crown-6 and that the Starks extraction mechanism was suggested for the present phase transfer catalysis systems.</description><subject>Catalysis</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Crown ether</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Hexane/water interface</subject><subject>Interfacial tension</subject><subject>Phase transfer catalysis</subject><subject>Surface physical chemistry</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><issn>0021-9797</issn><issn>1095-7103</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp9kF1LwzAUhoMobk7_gBeSG71rl9MmTQveyPBjMPBmXocsOWUpXTuTzo9_b8uK3gkHAuF5X855CLkGFgODbF7FlXEhThiT8TBZfkKmwAoRSWDpKZkylkBUyEJOyEUIFWMAQhTnZAJSApeJmJL1sunQl9o4XdMOm-DahobuYB0G2pbU-Pazodht0QeqO6qdn3_qPkJ1Y-kWv3SD44cbmzBckrNS1wGvxndG3p4e14uXaPX6vFw8rCKT5ryLNmDTjG2EycBoYQQabiC3CeMsz7M0YVigAcsTkFqIRKdSZhzlBqTIbSpkOiN3x969b98PGDq1c8FgXfdLtYegsjwtBJO8B5Mj2J8TgsdS7b3baf-tgKnBparU4FINLtUwfXRGbsb2w2aH9i8yyuuB2xHQwei69LoZOn65AiTnPOu5-yOHvYsPh14F47AxaJ1H0ynbuv_2-AGgJJIS</recordid><startdate>20071201</startdate><enddate>20071201</enddate><creator>Azizian, Saeid</creator><creator>Kashimoto, Kaoru</creator><creator>Matsuda, Takashi</creator><creator>Matsubara, Hiroki</creator><creator>Takiue, Takanori</creator><creator>Aratono, Makoto</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20071201</creationdate><title>Interfacial tension studies of crown ethers at air/water and hexane/water interfaces</title><author>Azizian, Saeid ; Kashimoto, Kaoru ; Matsuda, Takashi ; Matsubara, Hiroki ; Takiue, Takanori ; Aratono, Makoto</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c384t-b1d360b5c61ca5c5ec4c18d2040886320e9ec1d4217a552a37764e7b1758d3573</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Catalysis</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Crown ether</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Hexane/water interface</topic><topic>Interfacial tension</topic><topic>Phase transfer catalysis</topic><topic>Surface physical chemistry</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Azizian, Saeid</creatorcontrib><creatorcontrib>Kashimoto, Kaoru</creatorcontrib><creatorcontrib>Matsuda, Takashi</creatorcontrib><creatorcontrib>Matsubara, Hiroki</creatorcontrib><creatorcontrib>Takiue, Takanori</creatorcontrib><creatorcontrib>Aratono, Makoto</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of colloid and interface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Azizian, Saeid</au><au>Kashimoto, Kaoru</au><au>Matsuda, Takashi</au><au>Matsubara, Hiroki</au><au>Takiue, Takanori</au><au>Aratono, Makoto</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interfacial tension studies of crown ethers at air/water and hexane/water interfaces</atitle><jtitle>Journal of colloid and interface science</jtitle><addtitle>J Colloid Interface Sci</addtitle><date>2007-12-01</date><risdate>2007</risdate><volume>316</volume><issue>1</issue><spage>25</spage><epage>30</epage><pages>25-30</pages><issn>0021-9797</issn><eissn>1095-7103</eissn><coden>JCISA5</coden><abstract>The adsorption of phase transfer catalysts, 18-crown-6 and dicyclohexano-18-crown-6, at the air/water and the hexane/water interfaces were investigated. Interfacial tension
σ decreased by increasing concentrations of these compounds and therefore both of these crown ethers are accumulated at interfaces. The variation of
σ with concentration for both compounds follows the Szyszkowski equation very well, from which the values of saturated surface densities and interaction parameters have been evaluated. On the basis of occupied surface area of each molecule, the orientation of each of molecules at the air/water and the hexane/water interfaces have been proposed. The present results show that dicyclohexano-18-crown-6 has the higher tendency not only to dissolve into the hexane phase but also to adsorb at the hexane/water interface than 18-crown-6 and that the Starks extraction mechanism was suggested for the present phase transfer catalysis systems.</abstract><cop>San Diego, CA</cop><pub>Elsevier Inc</pub><pmid>17714725</pmid><doi>10.1016/j.jcis.2007.07.068</doi><tpages>6</tpages></addata></record> |
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| subjects | Catalysis Chemistry Colloidal state and disperse state Crown ether Exact sciences and technology General and physical chemistry Hexane/water interface Interfacial tension Phase transfer catalysis Surface physical chemistry Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | Interfacial tension studies of crown ethers at air/water and hexane/water interfaces |
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