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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.5b02778
|2 doi
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|a pubmed24n0849.xml
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|a (DE-627)NLM254770495
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|a (NLM)26583431
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Nakamura, Yuki
|e verfasserin
|4 aut
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| 245 |
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|a Controlled Clustering in Binary Charged Colloids by Adsorption of Ionic Surfactants
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|c 2015
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 08.09.2016
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|a Date Revised 26.11.2016
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a We report on the controlled clustering of oppositely charged colloidal particles by the adsorption of ionic surfactants, which tunes charge numbers Z of particles. In particular, we studied the heteroclustering of submicron-sized polystyrene (PS) and silica particles, both of which are negatively charged, in the presence of cetylpyridinium chloride (CPC), a cationic surfactant. The surfactant concentration Csurf was selected below the critical micelle concentration. As CPC molecules were adsorbed, Z values of the PS and silica particles decreased, inverting to positive when Csurf exceeded the isoelectric point Ciep. Hydrophobic PS particles exhibited much lower Ciep than hydrophilic silica particles. At Csurf valuess between their Ciep values, the particles were oppositely charged, and clustering was enabled. To explain the clustering behavior, we investigated adsorption isotherms of the CPC and screened-Coulomb-type pair potential. Expected applications of the present findings are the control of colloidal associations and construction of various particle types into heterogeneous colloidal clusters
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Colloids
|2 NLM
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|a Micelles
|2 NLM
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|a Polymers
|2 NLM
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|a Polystyrenes
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|a Pyridines
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|a Sulfonic Acids
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|a Surface-Active Agents
|2 NLM
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|a Silicon Dioxide
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|a 7631-86-9
|2 NLM
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|a Cetylpyridinium
|2 NLM
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|a CUB7JI0JV3
|2 NLM
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|a 2-vinylpyridine
|2 NLM
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|a DT4UV4NNKX
|2 NLM
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|a styrenesulfonic acid polymer
|2 NLM
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|a ZSL2FB6GXN
|2 NLM
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| 700 |
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|a Okachi, Manami
|e verfasserin
|4 aut
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|a Toyotama, Akiko
|e verfasserin
|4 aut
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|a Okuzono, Tohru
|e verfasserin
|4 aut
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|a Yamanaka, Junpei
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 31(2015), 49 vom: 15. Dez., Seite 13303-11
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:31
|g year:2015
|g number:49
|g day:15
|g month:12
|g pages:13303-11
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|u http://dx.doi.org/10.1021/acs.langmuir.5b02778
|3 Volltext
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