Quantitative measure of hydrophobicity: Experiment and theory

Journal of Physical Chemistry B

Volumn 101, Issue 30, 1997, Pages 5777-5779

  Deschenes, Laura A ^a   Zilaro, Patrick ^a   Muller, Laura J ^a   Fourkas, John T ^a   Mohanty, Udayan ^a  

^a BOSTON COLLEGE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

COALESCENCE; GASES; SOLUBILITY; SURFACE PHENOMENA;

HYDROPHOBIC FORCES; HYDROPHOBIC GASES;

BUBBLES (IN FLUIDS);

EID: 0031190230     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp970849a     Document Type: Article

References (21)

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6. 1
7. 14 Water at the vapor interface is much less constrained than water at a hydrophobic interface, so the decrease in orientational entropy at the vapor interface is masked by the large increase in entropy from other degrees of freedom.
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10. The results obtained in water that has been degassed are qualitatively similar to the results in water that has not been degassed. Degassing significantly increases the rate of coalescence, however, providing greater dynamic range for the apparatus. All of the gases used here are sparingly soluble. At the flow rates used, the water in the column therefore becomes saturated with the gas being studied on a time scale (tens of seconds) that is faster than that on which the measurements are made (5-10 min). Thus, dissolution of the gas bubbles is not a factor in these experiments. Resaturation with air occurs on a time scale (hours) slow enough that it does not affect the measurements either.
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