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231223s2005 xx ||||| 00| ||eng c |
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|a pubmed24n0511.xml
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|a (NLM)15667169
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|e rakwb
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|a eng
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1 |
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|a Won, You-Yeon
|e verfasserin
|4 aut
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|a Effect of temperature on carbon-black agglomeration in hydrocarbon liquid with adsorbed dispersant
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|c 2005
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 25.05.2006
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|a Date Revised 25.01.2005
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Suspensions of carbon black in oil, stabilized with adsorbed polyisobutylene succinimide (PIBSI) dispersant, are commonly used as model systems for investigating the soot-handling characteristics of motor oils. The structure of the carbon-black agglomerates changes dramatically with temperature; this results in a concomitant change in the suspension rheology. Linear and nonlinear rheological experiments indicate a large increase of the interparticle attractions as the temperature is raised. To elucidate the origin of this behavior, we investigate the effect of temperature on the stabilizing effect of the dispersant. Measurements of adsorption isotherms of the dispersant on carbon black indicate that there is little variation of the binding energy with temperature. Intrinsic viscosity measurements of PIBSI dispersants in solution clearly exhibit an inverse dependence of the dispersant chain dimension with temperature. These results suggest that the temperature-dependent changes in the chain conformation of the PIBSI dispersant are primarily responsible for the changes in the dispersion rheology, and we propose a simple model to account for these data
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|a Journal Article
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|a Meeker, Steve P
|e verfasserin
|4 aut
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1 |
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|a Trappe, Veronique
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Weitz, David A
|e verfasserin
|4 aut
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1 |
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|a Diggs, Nancy Z
|e verfasserin
|4 aut
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|a Emert, Jacob I
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 21(2005), 3 vom: 01. Feb., Seite 924-32
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|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:21
|g year:2005
|g number:3
|g day:01
|g month:02
|g pages:924-32
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