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Titolo:
LONG-RANGED ATTRACTIVE FORCES BETWEEN NEUTRAL SURFACES DUE TO AMPHIPHILE AGGREGATION
Autore:
FORSMAN J; JONSSON B; AKESSON T;
Indirizzi:
CHEM CTR LUND,POB 124 S-22100 LUND SWEDEN
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 26, volume: 102, anno: 1998,
pagine: 5082 - 5087
SICI:
1089-5647(1998)102:26<5082:LAFBNS>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
AQUEOUS-ELECTROLYTE SOLUTIONS; HYDROPHOBIC SURFACES; GLASS SURFACES; CETYLTRIMETHYLAMMONIUM BROMIDE; MICA SURFACES; WATER; SURFACTANTS; CAVITATION; CAVITIES; BUBBLES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
43
Recensione:
Indirizzi per estratti:
Citazione:
J. Forsman et al., "LONG-RANGED ATTRACTIVE FORCES BETWEEN NEUTRAL SURFACES DUE TO AMPHIPHILE AGGREGATION", JOURNAL OF PHYSICAL CHEMISTRY B, 102(26), 1998, pp. 5082-5087

Abstract

The interaction of two charged surfaces, neutralized by adsorption ordeposition of charged amphiphilic molecules, has been investigated using Metropolis Monte Carlo simulations. Each surface can be consideredas a two-dimensional electrolyte (plasma), and it is well-known that there is a weak attractive surface-surface interaction decaying as h(-3) (h being the separation) in the absence of any salt between the walls. If a small fraction of the amphiphiles self-assemble and form highly charged aggregates, the attractive interaction increases significantly. The magnitude is much larger than the ordinary van der Waals attraction and the force can be substantial out to several thousand angstroms and is of course salt-dependent. That this can be a plausible mechanism for the very long-ranged forces sometimes observed between mica surfaces made hydrophobic by adsorption or deposition of charged amphiphiles.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 10:02:19