Summary
The problem of the interpretation of measurements of surface viscosity of a monomolecular film is complicated by the fact that calculations do not exist, except in a few cases, for the classic effects of bulk viscosity of the substrate fluids, between which the film lies. Methods are given for calculating these effects, where the basic measurement is a torque, or by the “viscous traction” method, where the basic measurement is a time, or velocity. Exactly the same equations used to evaluate the end effect torque correction due to the finite length of the rotating cylinders in a Couette viscometer, are used to evaluate the change in period of rotation in the viscous traction method.
Zusammenfassung
Die Messung von Oberflächenviskositäten eines monomolekularen Films wird dadurch erschwert, daß nur in wenigen Fällen Berechnungen über die klassischen Effekte der Viskosität in den Flüssigkeiten existieren, zwischen denen der monomolekulare Film liegt.
Es werden daher Methoden zur Berechnung dieser Effekte angegeben. Als Meßgröße wird entweder ein Drehmoment oder ein Zeit bzw. Geschwindigkeit (“viscous-traction method”) verwendet.
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References
Davies, J. T. and E. K. Rideal, Interfacial Phenomena 260 (New York 1963).
Lamb, H., Hydrodynamics VI ed 588 (New York 1932).
Van Wizer, J. R., J. W. Lyons, K. Y. Kim, and R. E. Colwell, Viscosity and Flow Measurement (New York 1963).
Brown, A. G., W. C. Thuman, and J. M. McBain, J. Colloid Science 8, 491 (1953).
Bernard, L. de, Proc. 2nd Int. Cong. Surf. Act. 1, 7 (London 1957).
Yamashita, T. and T. Isemura, Bull. Chem. Soc. Japan 38, 420 (1965).
Harkins, W. D. and J. G. Kirkwood, Nature 141. 39 (1938).
Ewers, W. E. and R. A. Sack, Australian J. Chem. 7, 40 (1954).
Davies, J. T. and G. R. A. Mayers. Trans. Farad. Soc. 56, 690 (1960).
Davies, J. T., Proc. 2nd Int. Cong. Surf. Act. 1, 220 (London 1957).
Burton, R. A. and R. J. Mannheimer, Analysis and Apparatus for Surface Rheological Measurements. Paper presented at the Amer. Chem. Soc. Symposium on Ordered Fluids and Liquid Crystals, Atlantic City, Sept. 14, 1965. p. 315, published by Amer. Chem. Soc. (1967).
Tschoegl, N. W., Kolloid-Z. u. Z. Polymere 181. 19 (1961).
Motomura, K. and R. Matuura, J. Colloid Sci. 18, 295 (1963).
Motomura, K., J. Phys. Chem. 68, 2826 (1964).
Jarvis, N. L., J. Phys. Chem. 70, 3027 (1966).
Katti, S. S., S. B. Kulkarni, M. K. Gharpurey, and A. B. Biswas, J. Colloid and Interface Sci. 22, 207 (1966).
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It is a pleasure to acknowledge the benefit of several discussions with Dr. Lynn Jarvis, whose experimental work on surface films inspired this theoretical investigation.
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Osborne, M.F.M. The theory of the measurement of surface viscosity. Kolloid-Z.u.Z.Polymere 224, 150–161 (1968). https://doi.org/10.1007/BF01533972
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DOI: https://doi.org/10.1007/BF01533972