Lifetime of a Foam Bilayer in Contact with an Insoluble Monolayer

✍ Scribed by D. Kashchiev; D. Exerowa

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 154 KB
• Volume: 203
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1998.5527

✦ Synopsis

the monolayer, t can be regarded also as depending on p s . The rupture of a foam bilayer in contact with an insoluble mono-Establishing the t(p s ) and, equivalently, the t(A) depenlayer of the amphiphiles building up the bilayer is considered as dence is our goal in the present study.

resulting from nucleation of nanoscopically small holes in the bilayer. An expression is derived for the dependence of the bilayer 2. DRIVING FORCE FOR BILAYER RUPTURE lifetime t on the surface pressure p s in the monolayer. It is found that this dependence has a threshold character: t decreases

The driving force for the transition of a thicker film to a sharply with decreasing p s in a narrow p s range, and the bilayer thinner one is the supersaturation Dm (J), which is the differruptures practically instantaneously below a certain critical surence between the chemical potentials of a molecule in the face pressure in the monolayer.