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231223s2008 xx |||||o 00| ||eng c |
| 024 |
7 |
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|a 10.1021/la702619a
|2 doi
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|a pubmed24n0592.xml
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|a eng
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| 100 |
1 |
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|a Wegrzyńska, Joanna
|e verfasserin
|4 aut
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| 245 |
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|a Adsorption of multiple ammonium salts at the air/solution interface
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|c 2008
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 05.05.2008
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|a Date Revised 26.03.2008
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The interfacial behavior of aqueous solutions of newly synthesized bis- and tris-ammonium salts (i.e., bis[2-hydroxy-3-(dodecyldimethylammonio)propyl]alkylamine dichlorides and bis[2-hydroxy-3-(dodecyldimethylammonio)propyl]dialkylammmonium trichlorides, respectively) was analyzed, both experimentally and theoretically. The dynamic and equilibrium surface tension of multiple ammonium salt solutions was measured by using a pendant drop shape analysis method. The determined surface tension isotherms indicated the lack of significant differences in surface activity between bis- and tris-ammonium salts, contrary to the expectations for divalent and trivalent surfactant ions. That effect was explained by assuming the formation of multiple surfactant ion-counterion associates. Taking into account the association process, a good correlation between experimental data and theoretical predictions was obtained by means of the "surface quasi two-dimensional electrolyte" (STDE) model of ionic surfactant adsorption. The degree of association necessary to explain the lack of difference in surface activity between bis- and tris-ammonium salts was in quantitative agreement with the results of measurements of the concentration of free chloride anions in the surfactant solution
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|a Journal Article
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1 |
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|a Para, Grazyna
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chlebicki, Jan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Warszyński, Piotr
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wilk, Kazimiera A
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1999
|g 24(2008), 7 vom: 01. Apr., Seite 3171-80
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|g year:2008
|g number:7
|g day:01
|g month:04
|g pages:3171-80
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| 856 |
4 |
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|u http://dx.doi.org/10.1021/la702619a
|3 Volltext
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