The influence of particle clustering on the rheological properties of highly concentrated magnetic nanofluids
[Display omitted] ► The highest solid volume fraction of the magnetite nanoparticles was 21%. ► DLS and magnetogranulometry revealed weak particle clustering. ► Viscosity versus solid particle concentration was fitted with Krieger–Dougherty formula. ► 1.3 part./cluster and 1.4nm surfactant layer thi...
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| Veröffentlicht in: | Journal of colloid and interface science 2012-05, Vol.373 (1), p.110-115 |
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| creator | Susan-Resiga, Daniela Socoliuc, V. Boros, T. Borbáth, Tunde Marinica, Oana Han, Adelina Vékás, L. |
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► The highest solid volume fraction of the magnetite nanoparticles was 21%. ► DLS and magnetogranulometry revealed weak particle clustering. ► Viscosity versus solid particle concentration was fitted with Krieger–Dougherty formula. ► 1.3 part./cluster and 1.4nm surfactant layer thickness were estimated from the fit.
In this paper the particle volume fraction and temperature dependence of the dynamic viscosity of highly concentrated transformer oil based magnetic nanofluids was investigated in the absence of an external magnetic field. The solid particle volume fraction dependence of the relative viscosity was found to be very well fitted by the Krieger–Dougherty formula, whence the mean ellipticity of the colloidal particles and the effective surfactant layer thickness were obtained. Using the information on the particles’ size and shape statistics obtained from TEM, DLS and magnetogranulometry investigations, it was concluded that the magnetite nanoparticles agglomerate in small clusters of about 1.3 particles/cluster, due to the van der Waals interactions. The effective thickness of the oleic acid surfactant layer was estimated as about 1.4nm, in very good agreement with the value resulted from previous SANS investigations. |
| doi_str_mv | 10.1016/j.jcis.2011.10.060 |
| format | Article |
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► The highest solid volume fraction of the magnetite nanoparticles was 21%. ► DLS and magnetogranulometry revealed weak particle clustering. ► Viscosity versus solid particle concentration was fitted with Krieger–Dougherty formula. ► 1.3 part./cluster and 1.4nm surfactant layer thickness were estimated from the fit.
In this paper the particle volume fraction and temperature dependence of the dynamic viscosity of highly concentrated transformer oil based magnetic nanofluids was investigated in the absence of an external magnetic field. The solid particle volume fraction dependence of the relative viscosity was found to be very well fitted by the Krieger–Dougherty formula, whence the mean ellipticity of the colloidal particles and the effective surfactant layer thickness were obtained. Using the information on the particles’ size and shape statistics obtained from TEM, DLS and magnetogranulometry investigations, it was concluded that the magnetite nanoparticles agglomerate in small clusters of about 1.3 particles/cluster, due to the van der Waals interactions. The effective thickness of the oleic acid surfactant layer was estimated as about 1.4nm, in very good agreement with the value resulted from previous SANS investigations.</description><identifier>ISSN: 0021-9797</identifier><identifier>EISSN: 1095-7103</identifier><identifier>DOI: 10.1016/j.jcis.2011.10.060</identifier><identifier>PMID: 22134213</identifier><identifier>CODEN: JCISA5</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>Agglomeration ; Chemistry ; Clusters ; Colloidal state and disperse state ; Colloids ; Dichroism ; DLS ; Dynamic viscosity ; Exact sciences and technology ; Ferrofluid ; General and physical chemistry ; magnetic fields ; Magnetic fluid ; magnetite ; Magnetogranulometry ; Nanocomposites ; Nanofluids ; Nanomaterials ; nanoparticles ; Nanostructure ; oils ; oleic acid ; Physical and chemical studies. Granulometry. Electrokinetic phenomena ; SLS ; statistics ; Surfactants ; TEM ; temperature ; transmission electron microscopy ; van der Waals forces ; Viscosity ; Volume fraction</subject><ispartof>Journal of colloid and interface science, 2012-05, Vol.373 (1), p.110-115</ispartof><rights>2011 Elsevier Inc.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2011 Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c508t-66bd16aae6659de46036261ada8d2951163cb616fa0a41c6cddbe42558ee3d243</citedby><cites>FETCH-LOGICAL-c508t-66bd16aae6659de46036261ada8d2951163cb616fa0a41c6cddbe42558ee3d243</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0021979711013592$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25784654$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22134213$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Susan-Resiga, Daniela</creatorcontrib><creatorcontrib>Socoliuc, V.</creatorcontrib><creatorcontrib>Boros, T.</creatorcontrib><creatorcontrib>Borbáth, Tunde</creatorcontrib><creatorcontrib>Marinica, Oana</creatorcontrib><creatorcontrib>Han, Adelina</creatorcontrib><creatorcontrib>Vékás, L.</creatorcontrib><title>The influence of particle clustering on the rheological properties of highly concentrated magnetic nanofluids</title><title>Journal of colloid and interface science</title><addtitle>J Colloid Interface Sci</addtitle><description>[Display omitted]
► The highest solid volume fraction of the magnetite nanoparticles was 21%. ► DLS and magnetogranulometry revealed weak particle clustering. ► Viscosity versus solid particle concentration was fitted with Krieger–Dougherty formula. ► 1.3 part./cluster and 1.4nm surfactant layer thickness were estimated from the fit.
In this paper the particle volume fraction and temperature dependence of the dynamic viscosity of highly concentrated transformer oil based magnetic nanofluids was investigated in the absence of an external magnetic field. The solid particle volume fraction dependence of the relative viscosity was found to be very well fitted by the Krieger–Dougherty formula, whence the mean ellipticity of the colloidal particles and the effective surfactant layer thickness were obtained. Using the information on the particles’ size and shape statistics obtained from TEM, DLS and magnetogranulometry investigations, it was concluded that the magnetite nanoparticles agglomerate in small clusters of about 1.3 particles/cluster, due to the van der Waals interactions. The effective thickness of the oleic acid surfactant layer was estimated as about 1.4nm, in very good agreement with the value resulted from previous SANS investigations.</description><subject>Agglomeration</subject><subject>Chemistry</subject><subject>Clusters</subject><subject>Colloidal state and disperse state</subject><subject>Colloids</subject><subject>Dichroism</subject><subject>DLS</subject><subject>Dynamic viscosity</subject><subject>Exact sciences and technology</subject><subject>Ferrofluid</subject><subject>General and physical chemistry</subject><subject>magnetic fields</subject><subject>Magnetic fluid</subject><subject>magnetite</subject><subject>Magnetogranulometry</subject><subject>Nanocomposites</subject><subject>Nanofluids</subject><subject>Nanomaterials</subject><subject>nanoparticles</subject><subject>Nanostructure</subject><subject>oils</subject><subject>oleic acid</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>SLS</subject><subject>statistics</subject><subject>Surfactants</subject><subject>TEM</subject><subject>temperature</subject><subject>transmission electron microscopy</subject><subject>van der Waals forces</subject><subject>Viscosity</subject><subject>Volume fraction</subject><issn>0021-9797</issn><issn>1095-7103</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kU9r3DAQxUVpaTZpv0APrS4lvXgryZZsQS4l9B8EemhyFlpp7NViS1vJLuTbd8xuc8xBCIbfvDczj5B3nG054-rzYXtwoWwF4xwLW6bYC7LhTMuq5ax-STaMCV7pVrcX5LKUA0NQSv2aXAjB6wbfhkz3e6Ah9uMC0QFNPT3aPAc3AnXjUmbIIQ40RTojl_eQxjQEZ0d6zOkISEJZm_Zh2I-P1CUUiXO2M3g62SECStFoY0KD4Msb8qq3Y4G35_-KPHz7en_7o7r79f3n7Ze7yknWzZVSO8-VtaCU1B4axWolFLfedl5oybmq3U5x1VtmG-6U834HjZCyA6i9aOorcn3SxSn_LFBmM4XiYBxthLQUo0WnmVZti-SnZ0nOhNBoyGpExQl1OZWSoTfHHCabHxEyayDmYNZAzBrIWsNAsOn9WX_ZTeCfWv4ngMDHM2AL3rXPNq4aT5xsu0bJdaUPJ663ydghI_PwG50UY6xtm65D4uZEAF72b4Bsigtrqj5kcLPxKTw36T92F7O0</recordid><startdate>20120501</startdate><enddate>20120501</enddate><creator>Susan-Resiga, Daniela</creator><creator>Socoliuc, V.</creator><creator>Boros, T.</creator><creator>Borbáth, Tunde</creator><creator>Marinica, Oana</creator><creator>Han, Adelina</creator><creator>Vékás, L.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>20120501</creationdate><title>The influence of particle clustering on the rheological properties of highly concentrated magnetic nanofluids</title><author>Susan-Resiga, Daniela ; Socoliuc, V. ; Boros, T. ; Borbáth, Tunde ; Marinica, Oana ; Han, Adelina ; Vékás, L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c508t-66bd16aae6659de46036261ada8d2951163cb616fa0a41c6cddbe42558ee3d243</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Agglomeration</topic><topic>Chemistry</topic><topic>Clusters</topic><topic>Colloidal state and disperse state</topic><topic>Colloids</topic><topic>Dichroism</topic><topic>DLS</topic><topic>Dynamic viscosity</topic><topic>Exact sciences and technology</topic><topic>Ferrofluid</topic><topic>General and physical chemistry</topic><topic>magnetic fields</topic><topic>Magnetic fluid</topic><topic>magnetite</topic><topic>Magnetogranulometry</topic><topic>Nanocomposites</topic><topic>Nanofluids</topic><topic>Nanomaterials</topic><topic>nanoparticles</topic><topic>Nanostructure</topic><topic>oils</topic><topic>oleic acid</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>SLS</topic><topic>statistics</topic><topic>Surfactants</topic><topic>TEM</topic><topic>temperature</topic><topic>transmission electron microscopy</topic><topic>van der Waals forces</topic><topic>Viscosity</topic><topic>Volume fraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Susan-Resiga, Daniela</creatorcontrib><creatorcontrib>Socoliuc, V.</creatorcontrib><creatorcontrib>Boros, T.</creatorcontrib><creatorcontrib>Borbáth, Tunde</creatorcontrib><creatorcontrib>Marinica, Oana</creatorcontrib><creatorcontrib>Han, Adelina</creatorcontrib><creatorcontrib>Vékás, L.</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</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>Susan-Resiga, Daniela</au><au>Socoliuc, V.</au><au>Boros, T.</au><au>Borbáth, Tunde</au><au>Marinica, Oana</au><au>Han, Adelina</au><au>Vékás, L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The influence of particle clustering on the rheological properties of highly concentrated magnetic nanofluids</atitle><jtitle>Journal of colloid and interface science</jtitle><addtitle>J Colloid Interface Sci</addtitle><date>2012-05-01</date><risdate>2012</risdate><volume>373</volume><issue>1</issue><spage>110</spage><epage>115</epage><pages>110-115</pages><issn>0021-9797</issn><eissn>1095-7103</eissn><coden>JCISA5</coden><abstract>[Display omitted]
► The highest solid volume fraction of the magnetite nanoparticles was 21%. ► DLS and magnetogranulometry revealed weak particle clustering. ► Viscosity versus solid particle concentration was fitted with Krieger–Dougherty formula. ► 1.3 part./cluster and 1.4nm surfactant layer thickness were estimated from the fit.
In this paper the particle volume fraction and temperature dependence of the dynamic viscosity of highly concentrated transformer oil based magnetic nanofluids was investigated in the absence of an external magnetic field. The solid particle volume fraction dependence of the relative viscosity was found to be very well fitted by the Krieger–Dougherty formula, whence the mean ellipticity of the colloidal particles and the effective surfactant layer thickness were obtained. Using the information on the particles’ size and shape statistics obtained from TEM, DLS and magnetogranulometry investigations, it was concluded that the magnetite nanoparticles agglomerate in small clusters of about 1.3 particles/cluster, due to the van der Waals interactions. The effective thickness of the oleic acid surfactant layer was estimated as about 1.4nm, in very good agreement with the value resulted from previous SANS investigations.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><pmid>22134213</pmid><doi>10.1016/j.jcis.2011.10.060</doi><tpages>6</tpages></addata></record> |
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| subjects | Agglomeration Chemistry Clusters Colloidal state and disperse state Colloids Dichroism DLS Dynamic viscosity Exact sciences and technology Ferrofluid General and physical chemistry magnetic fields Magnetic fluid magnetite Magnetogranulometry Nanocomposites Nanofluids Nanomaterials nanoparticles Nanostructure oils oleic acid Physical and chemical studies. Granulometry. Electrokinetic phenomena SLS statistics Surfactants TEM temperature transmission electron microscopy van der Waals forces Viscosity Volume fraction |
| title | The influence of particle clustering on the rheological properties of highly concentrated magnetic nanofluids |
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