Biocompatible lecithin organogels : structure and phase equilibria

The microstructure of organogels formed upon the addition of tiny amounts of water to a solution of lecithin in fatty acid esters (viz. isopropylpalmitate and ethyloleate) was investigated by means of molecular self-diffusion measurements. In both systems lecithin and water form disconnected cylindr...

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Détails bibliographiques
Publié dans:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 21(2005), 1 vom: 04. Jan., Seite 140-8
Auteur principal: Angelico, Ruggero (Auteur)
Autres auteurs: Ceglie, Andrea, Colafemmina, Giuseppe, Lopez, Francesco, Murgia, Sergio, Olsson, Ulf, Palazzo, Gerardo
Format: Article
Langue:English
Publié: 2005
Accès à la collection:Langmuir : the ACS journal of surfaces and colloids
Sujets:Journal Article Research Support, Non-U.S. Gov't Biocompatible Materials Palmitates Phosphatidylcholines Water 059QF0KO0R isopropyl palmitate 8CRQ2TH63M
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520 |a The microstructure of organogels formed upon the addition of tiny amounts of water to a solution of lecithin in fatty acid esters (viz. isopropylpalmitate and ethyloleate) was investigated by means of molecular self-diffusion measurements. In both systems lecithin and water form disconnected cylindrical reverse micelles. The ternary phase map for the lecithin/water/isopropylpalmitate has been investigated in detail. The organogel exists in a narrow region close to the lecithin-oil binary axis; for higher water content equilibrium between lamellae and reverse micelles is found. Lamellar phase occupies the lecithin-rich region, close to the lecithin corner (with the exception of a small island of hexagonal phase) and coexists with neat water close to the water-lecithin axis. The remaining part of the phase map shows the three-phase coexistence of water, oil, and lamellar phase 
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700 1 |a Colafemmina, Giuseppe  |e verfasserin  |4 aut 
700 1 |a Lopez, Francesco  |e verfasserin  |4 aut 
700 1 |a Murgia, Sergio  |e verfasserin  |4 aut 
700 1 |a Olsson, Ulf  |e verfasserin  |4 aut 
700 1 |a Palazzo, Gerardo  |e verfasserin  |4 aut 
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