Water in oil microemulsions : criteria for dilution at constant droplet size
نویسنده
چکیده
2014 The validity of the customary method for diluting water in oil (w/o) microemulsions is discussed. In concentrated systems and in the vicinity of critical consolute points, the method has deficiencies. J. Physique LETTRES 44 (1983) L-593 L-599 15 WILLET 1983, Classification Physics Abstracts 78.20J 78.35 82.70
منابع مشابه
Molecular thermodynamic modeling of droplet-type microemulsions.
Microemulsions are nanoheterogeneous, thermodynamically stable, spontaneously forming mixtures of oil and water by means of surfactants, with or without cosurfactants. The pledge to use small volumes of amphiphile molecules compared to large amounts of bulk phase modifiers in a variety of chemical and industrial processes, from enhanced oil recovery to biotechnology, fosters continuous investig...
متن کاملToxicity Evaluation of Microemulsion (Nano Size) of Sour Cherry Kernel Extract for the Oral Bioavailability Enhancement
BACKGROUND In the recent years nanostructured materials have been the focus of researches due to their wide-spread possibilities to provide new shapes and structures for some materials. Microemulsions can provide uniform nano-sized droplets for templating. Microemulsions are isotropic, thermodynamically-stable systems of oil, water and surfactant with a 20-200 nm droplet size. They can be prepa...
متن کاملGrowth Mechanisms of CdS Nanocrystals in Aqueous Media
CdS nanocrystals were prepared in water-in-oil microemulsions. The nanocrystal properties, absorption and luminescence spectra and size distributions, were monitored at different times after mixing the microemulsions of the two precursors to obtain information on their growth mechanism. In particular, CdS nanocrystals were prepared using water-in-heptane or water-in-nonane microemulsions. The r...
متن کاملEnhance transdermal delivery of flurbiprofen via microemulsions: Effects of different types of surfactants and cosurfactants
BACKGROUND AND THE PURPOSE OF THE STUDY Microemulsions are thermodynamically stable, clear dispersions of water, oil, surfactant, and cosurfactant. This study was aimed to develop flurbiprofen microemulsion for enhanced transdermal delivery and investigate the effects of different surfactants and cosurfactants on its delivery and phase behavior. METHOD Various surfactant-cosurfactant mixtures...
متن کاملPolymer-Induced Structural Transitions in Microemulsions
We predict, qualitatively, the structural transitions in microemulsion systems induced by nonionic polymers, by virtue of their ability to associate with the surfactant assemblies. The predictions are made possible by linking (a) theoretical calculations of the domains of existence of oil-in-water (O/W) and water-in-oil (W/O) droplet microemulsions with (b) the experimental observation that on ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2016