Rheology and thermotropic properties of bis-urea-based organogels in various primary alcohols
| Autor: | Jelle Brinksma, R. Vreeker, J. H van Esch, Bernard Feringa, Rm Kellogg |
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| Přispěvatelé: | Synthetische Organische Chemie, Faculty of Science and Engineering, Stratingh Institute of Chemistry, Moleculaire Anorganische Chemie |
| Jazyk: | Dutch; Flemish |
| Rok vydání: | 2000 |
| Předmět: |
Octanol
Thixotropy ORGANIC-SOLVENTS Cyclohexane MOLECULAR-WEIGHT GELATORS Thermotropic crystal Propanol chemistry.chemical_compound Differential scanning calorimetry Polymer chemistry Electrochemistry THERMOREVERSIBLE GELATION SCATTERING General Materials Science GeneralLiterature_REFERENCE(e.g. dictionaries encyclopedias glossaries) GEL PHASE Spectroscopy Butanol Surfaces and Interfaces Condensed Matter Physics RODS CRYSTALS chemistry Chemical engineering LIQUIDS ComputingMethodologies_DOCUMENTANDTEXTPROCESSING PHASE-TRANSITION FIBERS Hexanol |
| Zdroj: | Langmuir, 16(24), 9249-9255. AMER CHEMICAL SOC |
| ISSN: | 0743-7463 |
| Popis: | The thermotropic and viscoelastic properties and the structure of thermoreversible organogels composed of enantiomerically pure trans-1,2-bis(3-dodecylureido)cyclohexane (1) and primary alcohols, i.e., propanol, butanol, hexanol, and octanol, have been investigated by melting-point measurements, differential scanning calorimetry (DSC), rheology, and electron microscopy. The electron microscopic studies revealed that gelation of these solvents occurred through the formation of an entangled network by 1. In all solvents, the gels behave as viscoelastic solids, with G‘ ≫ G‘ ‘ at frequencies >0.01 Hz (time scales |
| Databáze: | OpenAIRE |
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