NDLI: A disjoining pressure study of foam films stabilized by tetradecyl trimethyl ammonium bromide C14TAB

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A disjoining pressure study of foam films stabilized by tetradecyl trimethyl ammonium bromide C14TAB

Content Provider	Semantic Scholar
Author	Schulze-Schlarmann, Judith Buchavzov, Natalie Stubenrauch, Cosima
Copyright Year	2006
Abstract	In the present study disjoining pressure versus thickness curves (Π–h curves) of the cationic surfactant tetradecyl trimethyl ammonium bromide (C14TAB) were measured as a function of the surfactant concentration and of the electrolyte concentration. The former measurements were used to determine the dissociation degree of C14TAB in a confined geometry, i.e. in a thin common black film (CBF). The latter measurements allowed us to determine the electrolyte concentration at which a Newton black film (NBF) is formed and to study the influence the foam film type (CBF or NBF) has on the stability of the respective foam. Last but not least, CBFs were studied in a temperature gradient and it was found that water diffuses from cold to hot regions which can be explained with a negative Soret coefficient of H2O. All of these examples demonstrate that Π–h curves provide much more information about foam films than simply the interaction forces.
Starting Page	584
Ending Page	594
Page Count	11
File Format	PDF HTM / HTML
DOI	10.1039/B602975B
Volume Number	2
Alternate Webpage(s)	http://www.rsc.org/suppdata/sm/b6/b602975b/b602975b.pdf
Alternate Webpage(s)	https://doi.org/10.1039/B602975B
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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