Behavior of a Reverse Lamellar Phase in the Presence of Low Molecular Weight Triblock Molecules

Autor:	R. Ober, B. Guidetti, Wladimir Urbach, I. Rico-Lattes, Nicolas Taulier, M.-F. Gouzy
Rok vydání:	2002
Předmět:	Materials science Scattering Membrane thickness Surfaces and Interfaces Condensed Matter Physics Pulmonary surfactant Chemical engineering Lamellar phase Polymer chemistry Electrochemistry Molecule General Materials Science Lamellar structure Membrane surface Spectroscopy
Zdroj:	Langmuir. 18:68-73
ISSN:	1520-5827 0743-7463
DOI:	10.1021/la0155202
Popis:	The behavior of a reverse lamellar phase has been studied by small-angle X-ray scattering upon the insertion of triblock molecules. A decrease of the lamellar spacing and membrane thickness was observed, whereas the Cailleexponent remained constant whatever the concentration of triblock molecules. A similar behavior was observed when surfactant molecules were added to the lamellar phase instead of triblock molecules. We demonstrate that our experimental results are consistent with the assumption that triblock molecules only participate to increase the membrane surface area. Moreover, we emphasize the fact that the surfactant molecular area varies with the membrane thickness. Indeed, this property appears to be the main effect causing the observed dramatic decrease of the lamellar spacing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::13f867e8774a1993c1d8bbde0dc067e8 https://doi.org/10.1021/la0155202 Zobrazit plný text záznamu