Methodologies for phase studies of amphiphilic compounds: recent developments |
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| Affiliation: | 1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122, Luoshi Road, Wuhan 430070, China;2. School of Materials Science and Technology, South China University of Technology, 381 Wushan Road, Guangzhou 510640, China;3. Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, 61, rue de Bruxelles, B-5000 Namur, Belgium;4. School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA;1. Instituto de Telecomunicações and Department of Electrical and Computer Engineering, University of Coimbra, 3030-290, Coimbra, Portugal;2. Instituto Superior Técnico—University of Lisbon, Avenida Rovisco Pais, 1, 1049-001 Lisboa, Portugal |
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| Abstract: | Isoplethal phase study methods, during which temperature is varied at constant composition, have seen little change during the last few years. However, isothermal methods (in which composition is varied at constant temperature) have undergone significant development. The deuterium-NMR variant of the classic isothermal analytic method has grown in importance. Also, more and better use has been made of qualitative isothermal swelling methods (‘penetration experiments’) to supplement other data. The quantitative Diffusive Interfacial Transport (DIT) method, first reported in 1987, has been much improved by replacing interferometry, as the basis for analysis, with the determination of water by NIR microspectroscopy. The resulting DIT-NIR method appears to be very general, and should see broad application in the future. |
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