Formation of a lamellar phase
| Autor: | Arjen Sein, Jan B. F. N. Engberts |
|---|---|
| Přispěvatelé: | Molecular Inorganic Chemistry |
| Jazyk: | angličtina |
| Rok vydání: | 1996 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_compound Pulmonary surfactant Lamellar phase Lyotropic FREEZE-FRACTURE Electrochemistry General Materials Science Lamellar structure LIQUID-CRYSTALLINE PHASES Spectroscopy Phase diagram ELECTRON-MICROSCOPY Aqueous solution Chemistry Aqueous two-phase system Surfaces and Interfaces DEFECTS Condensed Matter Physics SURFACTANT TRANSPORT DIFFUSION Chemical engineering Sodium hydroxide BEHAVIOR MESOPHASES LIPOSOME STRUCTURE |
| Zdroj: | Langmuir, 12(12), 2924-2931. AMER CHEMICAL SOC |
| ISSN: | 0743-7463 |
| Popis: | The dynamics of the formation of a lyotropic lamellar arrangement. of surfactant molecules has been studied by means of a contact experiment. Technical grade dodecylbenzenesulfonic acid (HDoBS) was brought into contact with water or an aqueous solution containing sodium hydroxide or sodium hydroxide plus sodium chloride. The phase penetration was followed by light microscopy and freeze-fracture electron microscopy (FFEM). By the FFEM technique more insight has been obtained into the ordering process on a molecular level. The use of FFEM for such an application has not been presented before. In combination with phase diagrams, these techniques offered a mechanism for the formation of the lamellar phase, starting from the bulk surfactant situation. As a first step, water penetrates into bulk liquid isotropic HDoBS, thereby in passing inducing the lamellar order of surfactant molecules. Further maturing of the lamellar phase strongly depends on the type of aqueous phase offered. |
| Databáze: | OpenAIRE |
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