منابع مشابه
Wetting phenomena of binary liquid mixtures on chemically altered substrates.
We report measurements of the state of wetting of two liquid mixtures at coexistence near their respective critical consolute temperatures. Borosilicate glass capillary tubes were reacted with hexamethyldisilazane to produce substrates of uniform and controlled silylation. Surfaces of low coverage exhibit a series of first-order partial to complete wetting transitions and obey a short-range for...
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We investigate a wetting reversal transition in thin films of two-phase mixtures of poly(ethylenepropylene) (PEP) and its deuterated analog (dPEP) on substrates covered by self-assembled monolayers (SAM) whose surface energy, gSAM, is tuned by varying the SAM composition. As gSAM increases from 21 to 24 mJ m2, a transition from a dPEP PEP dPEP SAM to a dPEP PEP SAM structure occurs at increasin...
متن کاملApproach tq complete wetting in 4He-3He binary liquid mixtures
We reanalyse an experimental work, including some unpublished results, on the adsorption of 4He atoms on a substrate in a 4He-3He mixture. We verify with remarkable accuracy the powerlaw dependence of the 4He adsorption thickness as a function of the distance AT to coexistence : e = C1/ (0394T) 1/3, for thicknesses e ranging from 20 to 80 Å (5 to 20 atomic layers). The analysis is made possible...
متن کاملWetting problem for multi-component fluid mixtures
In this paper we propose an extension of the Cahn method [1] to binary mixtures and study the problem of wetting near a two-phase critical point without any assumption on the form of intermolecular potentials. A comparison between Cahn’s method and later works by Sullivan [2,3], Evans et al [4,5] is made. By using an expression of the energy of interaction between solid surface and liquids prop...
متن کاملWetting phenomena in bcc binary alloys
The wetting behavior at the free (100) surface of a bcc binary alloy exhibiting a continuous order-disorder transition in the bulk is investigated theoretically, using a model equivalent to a bcc Ising antiferromagnet in an external magnetic field. Its salient feature is the generation of an effective ordering surface field , g1 6= 0, for certain symmetry-breaking surface orientations like (100...
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ژورنال
عنوان ژورنال: International Journal of Pharmaceutics
سال: 2019
ISSN: 0378-5173
DOI: 10.1016/j.ijpharm.2019.118770