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Behaviour of binary free liquid films of nitrobenzene-hexane

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Summary

The behaviour of free liquid films from nitrobenzene-hexane binary solutions has been studied. The rate of thinning and the thickness of rupture of the films in dependence of composition and temperature are measured. The dependence so obtained are compared to the data about the thickness of the transition surface layers in this system. Deep minima both in the rate of thinning and the thickness of rupture curves are obtained in the region of equimolar composition where maximum thickness of the transition layers is expected. The results of the investigation lead to the conclusion that positive disjoining pressure due to deformation of the surface layers arises in the films.

Zusammenfassung

Es wurde das Verhalten freier flüssiger Filme aus binären Mischungen von Nitrobenzol und Hexan untersucht. Die Ausdünnungsgeschwindigkeit und die Filmdicke beim Reißen wurden in Abhängigkeit von der Zusammensetzung und Temperatur gemessen. Es wurden tiefe Minima sowohl in der Ausdünnungsgeschwindigkeit als auch in der Zerreißdicke erhalten im Bereich äquimolarer Mischungen. Die Ergebnisse der Untersuchungen führen zu dem Schluß, daß in den Filmen ein positiver Disjoining-Druck durch die Deformation der Oberflächenschicht wirksam wird.

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Manev, E., Buleva, M. Behaviour of binary free liquid films of nitrobenzene-hexane. Colloid & Polymer Sci 256, 375–377 (1978). https://doi.org/10.1007/BF01544332

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  • DOI: https://doi.org/10.1007/BF01544332

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