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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.7b00816
|2 doi
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|a eng
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|a Hayden, Edward
|e verfasserin
|4 aut
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|a Frequency-Dependent Solvent Impedance and Colloid Microelectrophoresis Measurements in Partially Polar Solvents
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|c 2017
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|a Text
|b txt
|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 10.07.2018
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|a Date Revised 10.07.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We carry out frequency-dependent solvent impedance measurements and alternating current (ac) colloid microelectrophoresis experiments in partially polar solvents in the low-frequency regime (0.25 Hz ≤ f ≤ 10 Hz). Solvent electrode polarization effects are quantified first in partially polar solvent mixtures containing bromocyclohexane (CHB). We find that the polarization capacitance from electrode polarization exhibits a clear power law behavior Cp = Cp0 f-m with power law exponent m = 0.25 ± 0.04. Once we account for electrode polarization effects, we are able to obtain quantitative mobilities in the low-frequency regime from our ac microelectrophoresis measurements; for these measurements, we use poly(methyl methacrylate colloids that are gravitationally confined to a plane while suspended in a low-polar solvent mixture of cis-trans decahydronapthalene and CHB. We find that the dimensionless electrophoretic mobility is constant, consistent with expectations for frequencies below the ion-diffusion frequency, and has a value E = 1.6 ± 0.4
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Aljabal, Zena
|e verfasserin
|4 aut
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|a Yethiraj, Anand
|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 33(2017), 19 vom: 16. Mai, Seite 4781-4788
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:33
|g year:2017
|g number:19
|g day:16
|g month:05
|g pages:4781-4788
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|u http://dx.doi.org/10.1021/acs.langmuir.7b00816
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