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Titolo:
PERMEATION THROUGH MONOLAYERS
Autore:
BARNES GT;
Indirizzi:
UNIV QUEENSLAND,DEPT CHEM BRISBANE QLD 4072 AUSTRALIA
Titolo Testata:
Colloids and surfaces. A, Physicochemical and engineering aspects
fascicolo: 2-3, volume: 126, anno: 1997,
pagine: 149 - 158
SICI:
0927-7757(1997)126:2-3<149:PTM>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVAPORATION RESISTANCES; TEMPERATURE;
Keywords:
EVAPORATION REDUCTION; EVAPORATION THROUGH MONOLAYERS; FLOATING MONOLAYERS; WATER EVAPORATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
G.T. Barnes, "PERMEATION THROUGH MONOLAYERS", Colloids and surfaces. A, Physicochemical and engineering aspects, 126(2-3), 1997, pp. 149-158

Abstract

Loss of water by evaporation from open water storages is a serious problem in arid climates, but it can be markedly reduced by spreading aninsoluble monolayer, usually a long-chain alcohol, over the water surface. This review examines some of the laboratory studies on the retardation of evaporation by monolayers. The dependencies of evaporation resistance on temperature, alkyl chain length, and monolayer composition are surveyed. The energy barrier, density fluctuation, and accessible area theories are shown to explain much of the data but do not explain the sensitivity to impurities and the effect of added cholesterol. Measurement of temperature gradients under the surface by interferometry shows that inhibition of convection is not an important mechanism in evaporation resistance. The structure of monolayers as revealed by atomic force microscopy on Langmuir-Blodgett films and by synchrotron X-ray grazing incidence diffraction on floating monolayers indicates that most evaporation occurs through the regions between relatively impermeable monolayer domains. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 17:59:32