A Small-Angle Neutron Scattering Study of Cholic Acid-Based Organogel Systems
| Autor: | Pierre Terech, Hendra M. Willemen, Bruno Demé, Wim G. Bouwman, Antonius T. M. Marcelis, Ernst J. R. Sudhölter |
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| Rok vydání: | 2004 |
| Předmět: |
Macromolecular Substances
organic liquids polymer water fibers Neutron scattering chemistry.chemical_compound Electrochemistry Molecule General Materials Science Spectroscopy Alkyl VLAG gelators chemistry.chemical_classification Molecular Structure Chemistry Organic Chemistry Cholic acid Cholic Acids Surfaces and Interfaces Radius Polymer gels Condensed Matter Physics Organische Chemie Small-angle neutron scattering Neutron Diffraction rheological properties Crystallography Microcrystalline Crystallization |
| Zdroj: | Langmuir, 20(6), 2075-2080 Langmuir 20 (2004) 6 |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | Small-angle neutron scattering measurements were performed on some cholic acid-based gel systems in order to gain detailed information about the network structure. The presence of thin fibers with a radius of about 10-20 Å was found for various gelators. Two types of interaction between different sorts of fibers were demonstrated, depending on the molecular structure of the gelator. The first type involves the presence of microcrystalline knots with a dimension of about 100-200 Å between the fibers. Upon heating, this network gradually disintegrates. The second type involves loose entanglements between flattened fibers. The occurrence of these types of interaction is related to the length of the alkyl tail attached to cholic acid. |
| Databáze: | OpenAIRE |
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