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  • Organic Chemistry  (3)
  • bindingisotherm  (2)
  • adsorption kinetics  (1)
  • 1
    Electronic Resource
    Electronic Resource
    On the theory of adsorption kinetics of ionic surfactants at fluid interfaces (1985)
    Springer
    Colloid & polymer science 263 (1985), S. 420-423 
    Details
    ISSN: 1435-1536
    Keywords: adsorption kinetics ; ionic surfactants ; electric double layer influence ; theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The kinetic equation to describe the adsorption process of ionic surfactants (derived in part 1) will be solved numerically. The results show the effect of parameters such as ion valencyz, thickness of theDL x −1, and surfactant parametersΓeq,K, andK ads on the adsorption process. The results can be used to decide whether the model can explain experimental data on charged surfactant molecules or not.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410392
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of pH on the binding of alkyl sulfates to gelatin (1989)
    Springer
    Colloid & polymer science 267 (1989), S. 839-843 
    Details
    ISSN: 1435-1536
    Keywords: Gelatin ; surfactant ; bindingisotherm ; surfactant-selectiveelectrode
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A surfactant-selective eletrode in which the membrane is an o-nitrotoluene phase containing a dissolved complex of cetyltrimethylammonium-dodecyl sulfate has been applied to investigations of the interaction between gelatin and alkyl sulfates as well as gelatin and alkyltrimethylammoniumions in dilute aqueous solutions. The binding isotherms were obtained by comparing emf-values obtained for surfactant in water to the electrode potentials in gelatin solutions plotted in terms of surfactant concentration. The binding of alkyl sulfates was measured as a function of pH at constant free surfactant concentration. At pH values ≥ 7 the degree of binding is indpendent of the pH of the solution. The level of binding of alkyl sulfates to gelatin increases strongly with increasing chain length of the alkyl sulfate. At pH values ≤ 6 the extent of binding increases steeply with decreasing pH. Octyl sulfate shows a very low level of binding even at low pH. Cationics show much weaker interactions with gelatin than anionic surfactants of comparable alkyl chain length.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410125
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The interaction of anionic surfactants with gelatin (1992)
    Springer
    Colloid & polymer science 270 (1992), S. 177-182 
    Details
    ISSN: 1435-1536
    Keywords: Gelatin ; surfactant ; bindingisotherm ; viscositycurves ; surfactantselectiveelectrode
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The binding of sodium dodecyl sulfate and a hydrophilic color coupler anion to gelatin was investigated using a surfactant-selective electrode. The binding isotherms of the surfactants to an alkali-processed bone gelatin, as well as an acid-processed bone gelatin were determined and compared with viscosity data. The comparison shows that viscosity measurements can only be regarded as circumstantial evidence for binding. At nearly identical binding isotherms the viscosity curves were found to be very different.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652184
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of Sulfated Lex-TrisaccharidesDedicated to Prof. Dr. R. R. Schmidt on the Occasion of his 60th Birthday (1995)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 337 (1995), S. 441-445 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The regioselective sulfation of a Lex-trisaccharide having free hydroxyl groups in 2-, 3- and 4- position of the galactose elucidated their different reactivities and gave mono- and disulfated Lex derivatives.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19953370196
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Beiträge zur Kenntnis des Stoffaustausches an der flüssig/flüssig PhasengrenzeHerrn Prof. Dr. H. Bertsch zum 65. Geburtstage gewidmet (1962)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 15 (1962), S. 288-302 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird über Untersuchungen der Vorgänge beim Stofftransport über die Grenze flüssiger Zweiphasensysteme berichtet. Die Geschwindigkeit des Stoffüberganges ist von mehreren Einflußgrößen abhängig. Einige dieser Parameter werden näher beschrieben und Wege zu ihrer Berücksichtigung bei Berechnungen aufgezeigt.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19620150316
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  • 6
    Electronic Resource
    Electronic Resource
    Zur Dehydratisierung von höheren primären Alkoholen an Al2O3 (1964)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 25 (1964), S. 184-187 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Dehydratisierung von Dodecanol an Al2O3 als präparative Methode zur Darstellung von Olefinen wurde untersucht. Es kann gezeigt werden, daß auch an einem neutralen Al2O3 eine Wanderung der Doppelbindung eintritt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19640250307
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    Paper (German National Licenses)
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