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Titolo:
DISSIPATIVE INTERFACES AND DEPARTURES FROM THE YOUNG-LAPLACE EQUATION
Autore:
YEUNG A; DABROS T; MASLIYAH J;
Indirizzi:
UNIV ALBERTA,DEPT CHEM & MAT ENGN EDMONTON AB T6G 2G6 CANADA UNIV ALBERTA,DEPT CHEM & MAT ENGN EDMONTON AB T6G 2G6 CANADA NAT RESOURCES CANADA,CANMET,WESTERN RES CTR DEVON AB T0C 1E0 CANADA
Titolo Testata:
Langmuir
fascicolo: 24, volume: 13, anno: 1997,
pagine: 6597 - 6606
SICI:
0743-7463(1997)13:24<6597:DIADFT>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
DILATIONAL VISCOELASTIC PROPERTIES; DROP-SHAPE-ANALYSIS; FLUID INTERFACES; ADSORPTION LAYERS; SURFACTANT; TENSIONS;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
A. Yeung et al., "DISSIPATIVE INTERFACES AND DEPARTURES FROM THE YOUNG-LAPLACE EQUATION", Langmuir, 13(24), 1997, pp. 6597-6606

Abstract

Adsorption layers composed of high molecular weight compounds (e.g., heavy oil-water interfaces) often possess dissipative properties and may exhibit shapes which do not conform to the Young-Laplace equation. This is demonstrated in the present theoretical study where the effects of surface viscosities on the dynamics of an inflating/deflating pendant droplet are examined. In particular, the interface is taken as a Boussinesq surface fluid with both dilational and shear viscosities. Our findings suggest the need for additional considerations when interpreting dynamic interfacial tension measurements: dynamic effects resulting from interfacial dissipation and from material exchange between the interface and the bulk may, in some circumstances, appear deceptively similar. A method of distinguishing these two disparate transport mechanisms, based solely on drop shape analysis, is proposed.

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Documento generato il 26/09/20 alle ore 03:37:37