Interface theory

A. Watts, T. J. VanderNoot. The electrical double layer at hquid-hquid interfaces. In A. G. Volkov, D. W. Deamer, eds. Liquid-Liquid Interfaces. Theory and Methods. Boca Raton CRC Press, 1996, pp. 77-102. 

Volkov, A. G., and D. W. Deamer, Eds., Liquid-Liquid Interfaces Theory and Methods, CRC Press, Boca Raton, EL, 1996. 

Dynamics of Adsorption at Liquid Interfaces Theory, Experiment, Application by S.S. Dukhin, G. Kretzschmar and R. Miller... 

When attempting to use these polymer interface theories (1-22) in planning and interpreting experiments, we encounter two problems associated with the interaction parameter in polymer-polymer systems. First we have to find a way of determining the values of the interaction parameters for the polymer pairs of interest. There is as yet no general experimental procedure which allows us evaluation of the x parameter. Without reliable values of the x parameter, comparative tests of the competing theories can only be made qualitatively. Secondly, to be able to use these theories with more confidence we have to have some idea about the dependence of the x parameter on concentration, temperature, etc. 

Because of these uncertainties, equations 1, 2, 3, 4, and 5 may not be relied upon as a means of quantitative evaluation of A until more data for other polymer-solvent systems become available. The equation-of-state thermodynamics is, however, useful in its ability to give us insight into the physical factors and their relative magnitudes which contribute to the polymer-polymer interaction parameter. The results in this work clearly show that the dependence of A on concentration and temperature is moderate. This gives a justification as a good approximation to the use of a constant polymer-polymer interaction parameter in the polymer interface theories where the polymer concentration encompasses the whole range Wi = 0 to 1 across the phase boundary. 

Refs. [i] Bottomley JT (1877) Electrometers (Science lectures at South Kensington). Macmillan and Co [ii] Electrometer measurements. (1972) Keithley Instruments [iii] Anso MK, Roos ME, Saks OV, Shor VG, Khyammalov YA (1989) Instrum Exp Tech 32 1257 [iv] Volkov AG, Deamer DW (eds) (1996) Liquid-liquid interfaces. Theory and methods. CRC-Press, Boca Raton... 

A.G. Volkov and D.W. Deamer, Liquid-Liquid Interfaces—Theory and Methods, CRC Press, Inc., New York, 1996. 

---