pH‐reversible destabilization‐dispersion of MWCNTs coated with functional plasma polymer films in water
The stability in water of multi‐walled carbon nanotubes (MWCNTs) coated with N‐ or O‐rich plasma polymers (PPs) is investigated at different pH values. MWCNTs are coated with PPs by plasma enhanced chemical vapor deposition of ethylene and ammonia or ethylene and carbon dioxide. MWCNTs coated with...
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| Veröffentlicht in: | Plasma processes and polymers 2017-11, Vol.14 (11), p.1700026-n/a |
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| creator | Jorge, Larissa Girard‐Lauriault, Pierre‐Luc Coulombe, Sylvain |
| description | The stability in water of multi‐walled carbon nanotubes (MWCNTs) coated with N‐ or O‐rich plasma polymers (PPs) is investigated at different pH values. MWCNTs are coated with PPs by plasma enhanced chemical vapor deposition of ethylene and ammonia or ethylene and carbon dioxide. MWCNTs coated with N‐rich PP in water at pH 12 exist as agglomerates that readily sediment, whereas, the agglomerate size decreases and suspension stability increases as the pH changes from 10 to 2. The reverse effect is observed for MWCNTs coated with O‐rich PP which form agglomerates at pH 2, but are stable from pH 4–12. By switching the pH of suspensions containing either one of these coated MWCNTs, it is possible to cycle through destabilization and dispersion steps.
MWCNTs coated with N‐ or O‐rich plasma polymers in water can be destabilized and redispersed through pH cycling. Charged nitrogen groups at pH 2 allow MWCNTs to remain stable in suspension, whereas agglomeration and sedimentation is observed at pH 12. The reverse trend is observed for the oxygen‐containing coating deposited on MWCNTs. |
| doi_str_mv | 10.1002/ppap.201700026 |
| format | Article |
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MWCNTs coated with N‐ or O‐rich plasma polymers in water can be destabilized and redispersed through pH cycling. Charged nitrogen groups at pH 2 allow MWCNTs to remain stable in suspension, whereas agglomeration and sedimentation is observed at pH 12. The reverse trend is observed for the oxygen‐containing coating deposited on MWCNTs.</description><identifier>ISSN: 1612-8850</identifier><identifier>EISSN: 1612-8869</identifier><identifier>DOI: 10.1002/ppap.201700026</identifier><language>eng</language><publisher>Weinheim: Wiley Subscription Services, Inc</publisher><subject>Agglomerates ; Agglomeration ; Ammonia ; Chemical vapor deposition ; Coating effects ; Destabilization ; Dispersion ; Ethylene ; Multi wall carbon nanotubes ; MWCNTs ; nanofluids ; Nanotubes ; Plasma enhanced chemical vapor deposition ; plasma polymerization ; Polymer films ; Stability</subject><ispartof>Plasma processes and polymers, 2017-11, Vol.14 (11), p.1700026-n/a</ispartof><rights>2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3176-c87ffad802d2a6160c7dfa70d47a474f3842fd280886cab32675d70453a306e53</citedby><cites>FETCH-LOGICAL-c3176-c87ffad802d2a6160c7dfa70d47a474f3842fd280886cab32675d70453a306e53</cites><orcidid>0000-0003-4050-0504</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fppap.201700026$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fppap.201700026$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Jorge, Larissa</creatorcontrib><creatorcontrib>Girard‐Lauriault, Pierre‐Luc</creatorcontrib><creatorcontrib>Coulombe, Sylvain</creatorcontrib><title>pH‐reversible destabilization‐dispersion of MWCNTs coated with functional plasma polymer films in water</title><title>Plasma processes and polymers</title><description>The stability in water of multi‐walled carbon nanotubes (MWCNTs) coated with N‐ or O‐rich plasma polymers (PPs) is investigated at different pH values. MWCNTs are coated with PPs by plasma enhanced chemical vapor deposition of ethylene and ammonia or ethylene and carbon dioxide. MWCNTs coated with N‐rich PP in water at pH 12 exist as agglomerates that readily sediment, whereas, the agglomerate size decreases and suspension stability increases as the pH changes from 10 to 2. The reverse effect is observed for MWCNTs coated with O‐rich PP which form agglomerates at pH 2, but are stable from pH 4–12. By switching the pH of suspensions containing either one of these coated MWCNTs, it is possible to cycle through destabilization and dispersion steps.
MWCNTs coated with N‐ or O‐rich plasma polymers in water can be destabilized and redispersed through pH cycling. Charged nitrogen groups at pH 2 allow MWCNTs to remain stable in suspension, whereas agglomeration and sedimentation is observed at pH 12. The reverse trend is observed for the oxygen‐containing coating deposited on MWCNTs.</description><subject>Agglomerates</subject><subject>Agglomeration</subject><subject>Ammonia</subject><subject>Chemical vapor deposition</subject><subject>Coating effects</subject><subject>Destabilization</subject><subject>Dispersion</subject><subject>Ethylene</subject><subject>Multi wall carbon nanotubes</subject><subject>MWCNTs</subject><subject>nanofluids</subject><subject>Nanotubes</subject><subject>Plasma enhanced chemical vapor deposition</subject><subject>plasma polymerization</subject><subject>Polymer films</subject><subject>Stability</subject><issn>1612-8850</issn><issn>1612-8869</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqFkL9OwzAQxi0EEqWwMltiTjnnj52OVQUUqUCHIkbLjW3h4sTGTqnKxCPwjDwJiYpgZLo7fb_vdPchdE5gRADSS--FH6VAGHQTPUADQkmalCUdH_72BRyjkxjXABkUJQzQi599fXwG9aZCNCursFSxFStjzbtojWs6UZroe9U12Gl89zS9X0ZcOdEqibemfcZ601Q9Kyz2VsRaYO_srlYBa2PriE2Dtx0dTtGRFjaqs586RI_XV8vpLJk_3NxOJ_OkygijSVUyrYUsIZWpoIRCxaQWDGTORM5ynZV5qmVaQvdaJVZZSlkhGeRFJjKgqsiG6GK_1wf3uun-4Wu3Cd15kZMxzXOgFHpqtKeq4GIMSnMfTC3CjhPgfaC8D5T_BtoZxnvD1li1-4fmi8Vk8ef9BqSHfUo</recordid><startdate>201711</startdate><enddate>201711</enddate><creator>Jorge, Larissa</creator><creator>Girard‐Lauriault, Pierre‐Luc</creator><creator>Coulombe, Sylvain</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0003-4050-0504</orcidid></search><sort><creationdate>201711</creationdate><title>pH‐reversible destabilization‐dispersion of MWCNTs coated with functional plasma polymer films in water</title><author>Jorge, Larissa ; Girard‐Lauriault, Pierre‐Luc ; Coulombe, Sylvain</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3176-c87ffad802d2a6160c7dfa70d47a474f3842fd280886cab32675d70453a306e53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Agglomerates</topic><topic>Agglomeration</topic><topic>Ammonia</topic><topic>Chemical vapor deposition</topic><topic>Coating effects</topic><topic>Destabilization</topic><topic>Dispersion</topic><topic>Ethylene</topic><topic>Multi wall carbon nanotubes</topic><topic>MWCNTs</topic><topic>nanofluids</topic><topic>Nanotubes</topic><topic>Plasma enhanced chemical vapor deposition</topic><topic>plasma polymerization</topic><topic>Polymer films</topic><topic>Stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jorge, Larissa</creatorcontrib><creatorcontrib>Girard‐Lauriault, Pierre‐Luc</creatorcontrib><creatorcontrib>Coulombe, Sylvain</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Plasma processes and polymers</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jorge, Larissa</au><au>Girard‐Lauriault, Pierre‐Luc</au><au>Coulombe, Sylvain</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>pH‐reversible destabilization‐dispersion of MWCNTs coated with functional plasma polymer films in water</atitle><jtitle>Plasma processes and polymers</jtitle><date>2017-11</date><risdate>2017</risdate><volume>14</volume><issue>11</issue><spage>1700026</spage><epage>n/a</epage><pages>1700026-n/a</pages><issn>1612-8850</issn><eissn>1612-8869</eissn><abstract>The stability in water of multi‐walled carbon nanotubes (MWCNTs) coated with N‐ or O‐rich plasma polymers (PPs) is investigated at different pH values. MWCNTs are coated with PPs by plasma enhanced chemical vapor deposition of ethylene and ammonia or ethylene and carbon dioxide. MWCNTs coated with N‐rich PP in water at pH 12 exist as agglomerates that readily sediment, whereas, the agglomerate size decreases and suspension stability increases as the pH changes from 10 to 2. The reverse effect is observed for MWCNTs coated with O‐rich PP which form agglomerates at pH 2, but are stable from pH 4–12. By switching the pH of suspensions containing either one of these coated MWCNTs, it is possible to cycle through destabilization and dispersion steps.
MWCNTs coated with N‐ or O‐rich plasma polymers in water can be destabilized and redispersed through pH cycling. Charged nitrogen groups at pH 2 allow MWCNTs to remain stable in suspension, whereas agglomeration and sedimentation is observed at pH 12. The reverse trend is observed for the oxygen‐containing coating deposited on MWCNTs.</abstract><cop>Weinheim</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/ppap.201700026</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0003-4050-0504</orcidid></addata></record> |
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| language | eng |
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| subjects | Agglomerates Agglomeration Ammonia Chemical vapor deposition Coating effects Destabilization Dispersion Ethylene Multi wall carbon nanotubes MWCNTs nanofluids Nanotubes Plasma enhanced chemical vapor deposition plasma polymerization Polymer films Stability |
| title | pH‐reversible destabilization‐dispersion of MWCNTs coated with functional plasma polymer films in water |
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