Thermodynamics of foam

The model considered has N elements which can be separate bubbles, nested bubbles, or interfacing gas pockets. It is shown that the number of independent variables is N + 3. That rule is used with Euler's theorem about homogeneous functions to prove the equation of state proposed by Ross, PV +...

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Bibliographic Details
Published in:Journal of colloid and interface science 1991-04, Vol.143 (1), p.278-286
Main Author: Hollinger, Henry B.
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Emulsions. Microemulsions. Foams
Exact sciences and technology
General and physical chemistry
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Summary:The model considered has N elements which can be separate bubbles, nested bubbles, or interfacing gas pockets. It is shown that the number of independent variables is N + 3. That rule is used with Euler's theorem about homogeneous functions to prove the equation of state proposed by Ross, PV + (2/3)α A = nRT,and the equation is used to find a thermodynamic potential that is minimized at the Laplace—Plateau equilibrium. The potential is G * = U − TS + ∑ p i V i − (2/3)α A.
ISSN:0021-9797
1095-7103
DOI:10.1016/0021-9797(91)90459-L