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Titolo:
Geometric and thermodynamic considerations about the lipid vesicles formation in water (I. Unilamellar vesicles)
Autore:
Vila, AO; Rodriguez-Flores, C; Figueruelo, J; Molina, F;
Indirizzi:
Univ Valencia, Unitat Invest Coloides, Dept Quim Fis, Burjassot 46100, Valencia, Spain Univ Valencia Burjassot Valencia Spain 46100 assot 46100, Valencia, Spain
Titolo Testata:
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
fascicolo: 1-3, volume: 189, anno: 2001,
pagine: 1 - 8
SICI:
0927-7757(20010915)189:1-3<1:GATCAT>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASE-TRANSITIONS; MULTILAMELLAR LIPOSOMES; MICELLE FORMATION; BILAYERS; DIAGRAMS; MIXTURES; MODEL;
Keywords:
phospholipids; micelles; lipidic bilayer; vesicles; liposomes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Molina, F Univ Valencia, Unitat Invest Coloides, Dept Quim Fis, Avda Vicent Andres Estelles, Burjassot 46100, Valencia, Spain Univ Valencia Avda Vicent Andres Estelles Burjassot Valencia Spain 46100
Citazione:
A.O. Vila et al., "Geometric and thermodynamic considerations about the lipid vesicles formation in water (I. Unilamellar vesicles)", COLL SURF A, 189(1-3), 2001, pp. 1-8

Abstract

A parametrization based on the differential geometry and on the thermodynamics of dispersed systems has been developed in order to explain the processes leading to the formation of lipid vesicles in water. Several factors ofknown importance such as aqueous interlayer, chain-length, lipid chain-packing and membrane asymmetry, as well as the existence of two different surfaces in the vesicular bilayer have been considered. The barrier which amphiphile molecules need to surpass in order to the vesicle be formed has threecontributions related to the surface energy, the mechanical energy due to overpressure and the excess of chemical potential. The theoretical results define the conditions at which unilamellar vesicles are formed and are applied to the phospholipids: dilauryl-, dimyristoyl-, dipalmytoyl-, and distearoyl-phosphatidylcholine. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 08/04/20 alle ore 23:49:33