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| 041 |
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|a eng
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| 100 |
1 |
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|a Trabelsi, S
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Co-adsorption of carboxymethyl-cellulose and cationic surfactants at the air-water interface
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| 264 |
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|c 2007
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 28.02.2007
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|a Date Revised 23.01.2007
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a We investigated the interaction between an anionic polyelectrolyte (carboxymethylcellulose) and cationic surfactants (DTAB, TTAB, and CTAB) at the air/water interface, using surface tension, ellipsometry, and Brewster angle microscopy techniques. At low surfactant concentration, a synergistic phenomenon is observed due to the co-adsorption of polyelectrolyte/surfactant complexes at the interface, which decreases the surface tension. When the surfactant critical aggregation concentration (cac) is reached, the adsorption saturates and the thickness of the adsorbed monolayer remains constant until another characteristic surfactant concentration, C0, is reached, at which all the polymer charges are bound to surfactant in bulk. Above C0, the absorbed monolayer becomes much thicker, suggesting adsorption of bulk aggregates, which have become more hydrophobic due to charge neutralization
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| 650 |
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|a Journal Article
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|a Langevin, D
|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 23(2007), 3 vom: 30. Jan., Seite 1248-52
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|x 1520-5827
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|g volume:23
|g year:2007
|g number:3
|g day:30
|g month:01
|g pages:1248-52
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