Tribo-Chemistry of Phosphonium-Derived Ionic Liquids
The tribological properties of room temperature ionic liquids containing tetraalkylphosphonium cations were evaluated on the basis of the chemical structure of their salts. The tribochemistry of these ionic liquids was discussed on the basis of the results of tribo-tests and surface analyses. The tr...
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| Veröffentlicht in: | Tribology letters 2010-11, Vol.40 (2), p.225-235 |
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| creator | Minami, Ichiro Inada, Taketo Sasaki, Ryusuke Nanao, Hidetaka |
| description | The tribological properties of room temperature ionic liquids containing tetraalkylphosphonium cations were evaluated on the basis of the chemical structure of their salts. The tribochemistry of these ionic liquids was discussed on the basis of the results of tribo-tests and surface analyses. The tribological properties of the tetraalkylphosphonium salts examined in this work were observed to be better than those of 1,3-alkylimidazolium salts. The structure of the alkyl group in the phosphonium cation also has a slight effect on the tribological properties of the salts. During a friction test carried out under low-load conditions, the phosphonium cation was oxidized to phosphate to form a boundary film. This film inhibited the reaction of the bis(trifluoromethanesulfonyl)amide anion that yielded metal fluoride on the rubbed surfaces. The combination of the phosphonium cation with a phosphate anion or thiophosphate anion resulted in a better lubricant than 1,3-alkylimidazolium bis(trifluoromethanesulfonyl)amide. The reactions of the phosphate anion and thiophosphate anion yielded a phosphate boundary film that exhibited better tribological properties than those of the fluoride boundary film. |
| doi_str_mv | 10.1007/s11249-010-9626-0 |
| format | Article |
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The tribochemistry of these ionic liquids was discussed on the basis of the results of tribo-tests and surface analyses. The tribological properties of the tetraalkylphosphonium salts examined in this work were observed to be better than those of 1,3-alkylimidazolium salts. The structure of the alkyl group in the phosphonium cation also has a slight effect on the tribological properties of the salts. During a friction test carried out under low-load conditions, the phosphonium cation was oxidized to phosphate to form a boundary film. This film inhibited the reaction of the bis(trifluoromethanesulfonyl)amide anion that yielded metal fluoride on the rubbed surfaces. The combination of the phosphonium cation with a phosphate anion or thiophosphate anion resulted in a better lubricant than 1,3-alkylimidazolium bis(trifluoromethanesulfonyl)amide. The reactions of the phosphate anion and thiophosphate anion yielded a phosphate boundary film that exhibited better tribological properties than those of the fluoride boundary film.</description><identifier>ISSN: 1023-8883</identifier><identifier>EISSN: 1573-2711</identifier><identifier>DOI: 10.1007/s11249-010-9626-0</identifier><language>eng</language><publisher>Boston: Boston : Springer US</publisher><subject>Anions ; Boundaries ; Cations ; Chemistry and Materials Science ; Corrosion and Coatings ; Fluorides ; Friction ; Ionic liquid ; Ionic liquids ; Ions ; Lubricant chemistry ; Lubricants ; Materials Science ; Mechanical properties ; Metal fluorides ; Nanotechnology ; Organic chemistry ; Original Paper ; Phosphates ; Physical Chemistry ; Solvents ; Structure-property relations ; Surface analysis (chemical) ; Surface chemistry ; Surfaces and Interfaces ; Theoretical and Applied Mechanics ; Thin Films ; Tribochemistry ; Tribology</subject><ispartof>Tribology letters, 2010-11, Vol.40 (2), p.225-235</ispartof><rights>Springer Science+Business Media, LLC 2010</rights><rights>Tribology Letters is a copyright of Springer, (2010). 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The tribochemistry of these ionic liquids was discussed on the basis of the results of tribo-tests and surface analyses. The tribological properties of the tetraalkylphosphonium salts examined in this work were observed to be better than those of 1,3-alkylimidazolium salts. The structure of the alkyl group in the phosphonium cation also has a slight effect on the tribological properties of the salts. During a friction test carried out under low-load conditions, the phosphonium cation was oxidized to phosphate to form a boundary film. This film inhibited the reaction of the bis(trifluoromethanesulfonyl)amide anion that yielded metal fluoride on the rubbed surfaces. The combination of the phosphonium cation with a phosphate anion or thiophosphate anion resulted in a better lubricant than 1,3-alkylimidazolium bis(trifluoromethanesulfonyl)amide. The reactions of the phosphate anion and thiophosphate anion yielded a phosphate boundary film that exhibited better tribological properties than those of the fluoride boundary film.</description><subject>Anions</subject><subject>Boundaries</subject><subject>Cations</subject><subject>Chemistry and Materials Science</subject><subject>Corrosion and Coatings</subject><subject>Fluorides</subject><subject>Friction</subject><subject>Ionic liquid</subject><subject>Ionic liquids</subject><subject>Ions</subject><subject>Lubricant chemistry</subject><subject>Lubricants</subject><subject>Materials Science</subject><subject>Mechanical properties</subject><subject>Metal fluorides</subject><subject>Nanotechnology</subject><subject>Organic chemistry</subject><subject>Original Paper</subject><subject>Phosphates</subject><subject>Physical Chemistry</subject><subject>Solvents</subject><subject>Structure-property relations</subject><subject>Surface analysis (chemical)</subject><subject>Surface chemistry</subject><subject>Surfaces and Interfaces</subject><subject>Theoretical and Applied Mechanics</subject><subject>Thin Films</subject><subject>Tribochemistry</subject><subject>Tribology</subject><issn>1023-8883</issn><issn>1573-2711</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9kEtLAzEUhYMoWKs_wJUDLlxF85i8llJfhYKC7TrMTJI2pZ20SUfovzfDCIILV_fBdw73HgCuMbrHCImHhDEpFUQYQcUJh-gEjDATFBKB8WnuEaFQSknPwUVKa5RBJNkIlPPo6wAnK7v16RCPRXDFxyqk3Sq0vtvCJxv9lzXFNI9NMfP7zpt0Cc5ctUn26qeOweLleT55g7P31-nkcQYbRtgBMqeUqQSvbemMNA2uOcOCGSGJQE5VZama2iBaC04rLh1jNVXEckmYywtDx-Bu8N3FsO9sOuh8ZGM3m6q1oUtacSqpEAxl8vYPuQ5dbPNxmhCJacn638cAD1QTQ0rROr2LflvFo8ZI9zHqIUad09F9jLp3JoMmZbZd2vjr_J_oZhC5KuhqGX3Si0-CMEVYIUYUod8tr3x9</recordid><startdate>20101101</startdate><enddate>20101101</enddate><creator>Minami, Ichiro</creator><creator>Inada, Taketo</creator><creator>Sasaki, Ryusuke</creator><creator>Nanao, Hidetaka</creator><general>Boston : Springer US</general><general>Springer US</general><general>Springer Nature B.V</general><scope>FBQ</scope><scope>C6C</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20101101</creationdate><title>Tribo-Chemistry of Phosphonium-Derived Ionic Liquids</title><author>Minami, Ichiro ; Inada, Taketo ; Sasaki, Ryusuke ; Nanao, Hidetaka</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c525t-5f99da76be4fd8dc1b65175d78270f9a449cbd03b763a68f55b392e6825f3a6d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Anions</topic><topic>Boundaries</topic><topic>Cations</topic><topic>Chemistry and Materials Science</topic><topic>Corrosion and Coatings</topic><topic>Fluorides</topic><topic>Friction</topic><topic>Ionic liquid</topic><topic>Ionic liquids</topic><topic>Ions</topic><topic>Lubricant chemistry</topic><topic>Lubricants</topic><topic>Materials Science</topic><topic>Mechanical properties</topic><topic>Metal fluorides</topic><topic>Nanotechnology</topic><topic>Organic chemistry</topic><topic>Original Paper</topic><topic>Phosphates</topic><topic>Physical Chemistry</topic><topic>Solvents</topic><topic>Structure-property relations</topic><topic>Surface analysis (chemical)</topic><topic>Surface chemistry</topic><topic>Surfaces and Interfaces</topic><topic>Theoretical and Applied Mechanics</topic><topic>Thin Films</topic><topic>Tribochemistry</topic><topic>Tribology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Minami, Ichiro</creatorcontrib><creatorcontrib>Inada, Taketo</creatorcontrib><creatorcontrib>Sasaki, Ryusuke</creatorcontrib><creatorcontrib>Nanao, Hidetaka</creatorcontrib><collection>AGRIS</collection><collection>Springer Nature OA Free Journals</collection><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Tribology letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Minami, Ichiro</au><au>Inada, Taketo</au><au>Sasaki, Ryusuke</au><au>Nanao, Hidetaka</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tribo-Chemistry of Phosphonium-Derived Ionic Liquids</atitle><jtitle>Tribology letters</jtitle><stitle>Tribol Lett</stitle><date>2010-11-01</date><risdate>2010</risdate><volume>40</volume><issue>2</issue><spage>225</spage><epage>235</epage><pages>225-235</pages><issn>1023-8883</issn><eissn>1573-2711</eissn><abstract>The tribological properties of room temperature ionic liquids containing tetraalkylphosphonium cations were evaluated on the basis of the chemical structure of their salts. The tribochemistry of these ionic liquids was discussed on the basis of the results of tribo-tests and surface analyses. The tribological properties of the tetraalkylphosphonium salts examined in this work were observed to be better than those of 1,3-alkylimidazolium salts. The structure of the alkyl group in the phosphonium cation also has a slight effect on the tribological properties of the salts. During a friction test carried out under low-load conditions, the phosphonium cation was oxidized to phosphate to form a boundary film. This film inhibited the reaction of the bis(trifluoromethanesulfonyl)amide anion that yielded metal fluoride on the rubbed surfaces. The combination of the phosphonium cation with a phosphate anion or thiophosphate anion resulted in a better lubricant than 1,3-alkylimidazolium bis(trifluoromethanesulfonyl)amide. The reactions of the phosphate anion and thiophosphate anion yielded a phosphate boundary film that exhibited better tribological properties than those of the fluoride boundary film.</abstract><cop>Boston</cop><pub>Boston : Springer US</pub><doi>10.1007/s11249-010-9626-0</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Anions Boundaries Cations Chemistry and Materials Science Corrosion and Coatings Fluorides Friction Ionic liquid Ionic liquids Ions Lubricant chemistry Lubricants Materials Science Mechanical properties Metal fluorides Nanotechnology Organic chemistry Original Paper Phosphates Physical Chemistry Solvents Structure-property relations Surface analysis (chemical) Surface chemistry Surfaces and Interfaces Theoretical and Applied Mechanics Thin Films Tribochemistry Tribology |
| title | Tribo-Chemistry of Phosphonium-Derived Ionic Liquids |
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