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Analiza powierzchni swobodnej filmu cieczy o złożonych właściwościach reologicznych

Broniarz-Press L., Dulska D.

Inżynieria i Aparatura Chemiczna

2006

Nr 6s

22-24

The studies presented were focused on the effect of polymers and surfactants additives on changes in the free surface of liquid falling film. The suppression of surface waves and the decrease of the mean film thickness have been observed. Total decay of waves on the free surface in surfactant solutions can be explained by flow laminarization and by the formation of internal shear-induced structures.

Characteristics of falling liquid films of surfactants and polymers solutions

Broniarz-Press L., Dulska D.

International Journal of Applied Mechanics and Engineering

2005

Vol. 10, no spec

77-83

In the present work the results of the studies on the effect of surface active-agents and polymers on a mean film thickness have been presented. The experimental studies on mean thickness of a film of water and aqueous solutions of hexadecyltrimethylammonium bromide HTAB and polyacrylamide flowing down the hydrophobic organic glass plate, have been carried outIt was stated that the reduction of the film thickness is observed when the shear induced structures of a polymer and surfactant are present in a solution. The best results were obtained for aqueous solutions of HTAB with addition of sodium salicylate.