Ostwald ripeningThe rates of Ostwald ripening in decane O/W emulsions were measured as a function of sodium dodecylsulphate concentration and of droplet volume fraction. It was found that the presence of micelles had only a small but systematic effect upon the rate of ripening, contrary to ...
Ostwald ripening in emulsions is reviewed, with particular emphasis on the application of the Lifshitz, Slezov and Wagner theory to emulsion systems. The rate of ripening within single component disperse phase emulsions can be described using this theory, provided certain parameters are known, these ...
Dissolution of small crystals or sol particles and the redeposition of the dissolved species on the surfaces of larger crystals or sol particles was first described by Wilhelm Ostwald in 1896. Ostwald ripening is generally found in water-in-oil emulsions, while flocculation is found in oil-in-wa...
Ostwaldripeningcausesthediffusion ofmonomersfromsmallertolargerdropletsduetogreatersolubilityofthe singlemonomermoleculesinthelargermonomerdroplets.Therateofthis diffusionprocessislinkedtothesolubilityofthemonomerinthecontinuous (water)phaseoftheemulsion.Thiscanleadtothedestabilizationofemulsions ...
Background: White thyme essential oil, which can be incorporated in clean-label and food emulsion-based products, is a natural antimicrobial agent. However, emulsions containing essential oils commonly undergo Ostwald ripening as the main destabilization process. The main objective of this work was ...
crystalsorsolparticleswasfirstdescribedbyWilhelmOstwaldin1896.Ostwaldripeningisgenerallyfoundin water-in-oilemulsions,whileflocculationisfoundinoil-in-wateremulsions. Thisthermodynamically-drivenspontaneousprocessoccursbecauselargerparticlesaremoreenergeticallyfavored ...
With the aid of adsorption, centrifuge and kinetic experiments it is shown that the effect probably arises from a slower rate of Ostwald ripening in emulsions containing long-chain alkanes. The effect of the nature of the oil phase on the van der Waals interaction between emulsion droplets is ...
Gas emulsions stabilized with fluorinated ethers having low Ostwald coefficients Chemistry Regenerated. (Book Reviews: Physical Chemistry from Ostwald to Pauling. The Making of a Science in America.) Baldan, A. Review Progress in Ostwald ripening theories and their applications to nickel-base superalloys...
of focused ion beam technology and transmission electron microscopy provides a rare glimpse of gold coarsening frozen in time, which includes nanoparticles trapped in iron oxides and rutile and non-oriented attachment of gold nanoparticles to bulk gold suggesting coarsening via Ostwald ripening. The...
Ostwald ripening is the process of dissolving and re-depositing particles. Therefore, it describes the change of inhomogeneous systems with time. We can observe this phenomenon in solid solutions or liquid sols, i.e. water-oil emulsions. The scientist, Wilhelm Ostwald, first described thisdissoluti...