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Titolo:
EXPERIMENTAL COMPARISONS WITH A NUMERICAL-MODEL OF SURFACTANT EFFECTSON THE BURST OF A SINGLE BUBBLE
Autore:
DEY D; BOULTONSTONE JM; EMERY AN; BLAKE JR;
Indirizzi:
UNIV BIRMINGHAM,CTR BIOCHEM ENGN,BBSRC BIRMINGHAM B15 2TT W MIDLANDS ENGLAND UNIV BIRMINGHAM,CTR BIOCHEM ENGN,BBSRC BIRMINGHAM B15 2TT W MIDLANDS ENGLAND UNIV BIRMINGHAM,SCH MATH & STAT BIRMINGHAM B15 2TT W MIDLANDS ENGLAND
Titolo Testata:
Chemical Engineering Science
fascicolo: 16, volume: 52, anno: 1997,
pagine: 2769 - 2783
SICI:
0009-2509(1997)52:16<2769:ECWANO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAS-BUBBLES; ANIMAL-CELLS; BIOREACTORS; ADDITIVES; RUPTURE;
Keywords:
BUBBLE; BURST; CELL CULTURE; INTERFACE; SIMULATION; SURFACTANT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
D. Dey et al., "EXPERIMENTAL COMPARISONS WITH A NUMERICAL-MODEL OF SURFACTANT EFFECTSON THE BURST OF A SINGLE BUBBLE", Chemical Engineering Science, 52(16), 1997, pp. 2769-2783

Abstract

A high-speed photographic study of gas bubbles bursting at a gas/liquid interface in the presence of surfactant is described. Bubbles were burst in a variety of media typical of those used in mammalian cell culture. In order to test the hypothesis that surfactant reduces cell damage as a result of moderation of the bubble burst, a numerical simulation of the surfactant effect was compared with the experimental data. Surface tension, surface shear and dilatational viscosities were measured in a variety of media containing a surfactant. The rate of bubblejet rise, a readily measured property of a burst, which depends strongly on the presence of surfactant, was measured. Experimental observations in the presence of surfactant broadly agree with the theory in the reduction in jet rise rate, if it is assumed that dilatational viscosity plays a major role. However, measured values for surface dilatational viscosity were an order of magnitude less than those required foran observable effect in the model. A reason for this discrepancy is proposed. (C) 1997 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 20:25:13