Abstract
The elasticity of a monolayer adsorbed from a surfactant solution isconsidered by continuously surface deformation. For all kinds surfacedeformations a single relation between the elasticity and the effective timeof the diffusion process should be obtained (master curve). This effectivetime depends on the rate of deformation and on the kind of deformation. Therelation between elasticity and effective time was proven experimentally fora decanoic acid solution at a concentration 10−7 molcm−3. The following surface deformations are considered: (i)expansion at a constant dilatation rate, (ii) compression at a constantdilatation rate, (iii) linear expansion, (iv) linear compression, (v, vi)compression and expansion in a some what more complicated way. From thesedata the Gibbs elasticity and the diffusion relaxation time are obtained.These parameters are also obtained by longitudinal wave method ofLucassen-Van den Tempel. Both set of parameters are comparable.
Finally the situation at a growing drop with constant flow rate isconsidered (Triton X-100), to show that also here the approach isfollowed.
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References
F. Van Voorst Vader, F. Erkens, and M. Van den Tempel, Trans. Faraday Soc. 60(6), 1170 (1964).
C.A. MacLeod and C.J. Radke, J. Colloid Interface Sci. 160, 435 (1993).
P. Joos and M. Van Uffelen, J. Colloid Interface Sci. 155, 271 (1993).
M. Van Uffelen and P. Joos, Colloids Surf. A 85, 119 (1994).
M. Van Uffelen and P. Joos, Colloids Surf. A 100, 245 (1995).
M. Van Uffelen and P. Joos, Colloids Surf. A 85, 107 (1994).
P. Petrov and P. Joos, J. Colloid Interface Sci. 181, 530 (1996).
J. Lucassen and M. Van den Tempel, Chem. Eng. Sci. 17, 1283 (1972).
J. Lucassen and M. Van den Tempel, J. Colloid Interface Sci. 41, 491 (1972).
F. Jiping and K. Lunkenheimer, Private communications.
M. Van Uffelen and P. Joos, J. Colloid Interface Sci. 171, 297 (1995).
T. Horozov and P. Joos, J. Colloid Interface Sci. 173, 334 (1995).
K. Lunkenheimer and R. Miller, J. Colloid Interface Sci. 120, 176 (1987).
P. Petrov and P. Joos, J. Colloid Interface Sci. 182, 179 (1996).
B. Li, P. Joos and T. Horozov, Colloids Surf. A 94, 85 (1995).
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Joos, P., Petrov, P. & Fang, J. Measurement of the Surface Elasticity of an Adsorbed Monolayer by Continuous Surface Deformation. Interface Science 5, 147–157 (1997). https://doi.org/10.1023/A:1008661326687
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DOI: https://doi.org/10.1023/A:1008661326687