Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Disjoining pressure measurements for foam films stabilized by a nonionic sugar-based surfactant
YKI – Ytkemiska institutet.
1996 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 12, 1336-1342 p.Article in journal (Refereed)
Abstract [en]

Disjoining pressure isotherms for foam films made from a nonionic surfactant, octyl b-glucoside, are measured at different surfactant concentrations, ionic strengths and solution pH values. Below the cmc an electrostatic double-layer repulsion is present and dominates the long-range interaction. The decay length of the forces agrees with the expected Debye length and the measured long-range interactions are consistent with solutions to the non-linear Poisson-Boltzmann equation using constant charge conditions. The deduced surface charge densities increase with pH and ionic strength but decrease with increasing surfactant concentration. At, or just above, the cmc, surfactant covers the interface and suppresses the charge sufficiently to induce a transition from a common black film to a Newton black film. Ultimately, the film stability is determined by both surface forces and elasticity. Combining both, via an overall film tension, leads to a general expression for the film elasticity.

Place, publisher, year, edition, pages
1996. Vol. 12, 1336-1342 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27266OAI: oai:DiVA.org:ri-27266DiVA: diva2:1054270
Note
A1010Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

Open Access in DiVA

No full text

By organisation
YKI – Ytkemiska institutet
In the same journal
Langmuir
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

Total: 6 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.27.0