Wettability properties

The augmentation of the work of adhesion by acid-base effects has, as a consequence, an effect on wettability properties. Identifying /sl in Eq. 26 as W and substituting it into Eq. 3 and Eq. 14, respectively leads to ... 

In conclusion, the design of stable Z-type multilayers requires a deep understanding of the wettability properties of the surfaces on a molecular level, which obviously depends not only on the structured fraction of the films but also on their defect sites and porosity. In the absence of such knowledge, the empirical approach described here for the preparation of stable Z-type films should be valid in the foreseable future. 

Successful assembly requires matching features of the template, meaning that wavelength and height have to be of the same dimensions. Additionally, adhesion of particles and surface must be avoided by weak repulsive forces. In this context, polyelectrolyte multilayer-wrinkles are particularly useful, as the wettability of the multilayer is determined by the part of the layer adjacent to the film/solution or film/air interface respectively, while the elastic properties are determined by the total film [84], Thus, elastic constants can be adjusted largely independent from wettability properties. 

It has been reported in an ocular pharmacokinetic study of cyclosporin A incorporated in deoxycholic acid-based anionic and stearylamine-based cationic emulsions in rabbit that, when compared to anionic emulsion, the cationic emulsion showed a significant drug reservoir effect of more than 8 h in corneal and conjunctival tissues of the rabbit eye following topical application [106], Since cornea and conjunctiva are of anionic nature at physiological pH [107], the cationic emulsion would interact with these tissues electrostatically to implicate the observed cyclosporin A reservoir effect. This hypothesis is supported, in principle, by an ex vivo study which showed that cationic emulsion carrier exhibited better wettability properties on rabbit cornea than either saline or anionic emulsion carrier [108],... 

The fundamental theoretical questions underlying the wetting of a solid surface by a liquid drop have been described and discussed. These theoretical principles can be directly applied to practice along two main lines (a) characterization of solid surfaces in terms of their surface tension and (b) designing processes based on controlling wettability properties. The following points summarize current understanding for each of these two directions. 

The second example concerns the surface heterogeneity of clay minerals. Important problems, such as limited yield of oil recovery arising during oil exploitation, involve interaction of pore filling fluids with the minerals that form the reservoir walls. The clay minerals, due to their relatively high specific surface area and electrical charge density, are the most active for the retention of oil. Illites and kaolinites are the clay minerals that are most frequently found and their wettability properties are believed to be in relation to the heavy oil ends retention process. 

M. Houmard, D. Riassetto, F. Roussel, A. Bourgeois, G. Berthome, J.C. loud, M. Langlet, Morphology and natural wettability properties of sol-gel derived Ti02-Si02 composite thin films , Applied Surface Science, 254, 1405-1414, (2007). 

The discovery of a highly active family of catalysts based on iron, a metal that had no previous track record in this field, has highlighted the possibilities of further new catalyst discoveries. The search for new catalysts be restricted to metals that have a history of giving polymerization-active centers was no longer needed. The LTMs especially are likely to provide fertile ground for future development, and the greater functional group tolerance of the LTMs also offers the attractive prospect of polar co-monomer incorporation. A relatively small amount of functionality can dramatically transform the adhesion and wettability properties of polyolefins more heavily functionalized products offer the prospect of materials with totally new properties and performance parameters. It is clear that, for olefin polymerization catalysis, the process of catalyst discovery and development is far from over. 

The other process of patterns generated is the analysis of magnesium influence on the wettability properties of ceramic substrates. Data obtained with experiments were analyzed in two ways. Kinetic models available in literamre were tested, which proved that they could not be used for real system modeling. Results directed to the use of methodology of dynamic systems analysis for modeling of wetting process. Two parameter models were used for simulation of the said wetting process [9]. 

The nature of the membrane material with respect to each fluid phase (e.g., wettability properties), the pore size and its distribution, the pressure... 

Kato Y, Adachi S (2011) Synthesis of Si nanowire arrays in AgO/HF solution and their optical and wettability properties. J Electrochem Soc 158 K157-K163 Kato S et al (2013) Optical assessment of silicon nanowire arrays fabricated by metal-assisted chemical etching. Nanoscale Res Lett 8 216... 

In clay minerals. Si, Al, Fe, Mn, and some organic macromolecules are responsible for most wettability properties. Wettability of clay minerals is a crucial prob-... 

Several studies have presented the results of plasma polymer characterization by various techniques 3 - s - 52 such as i.r., wettability, and adhesion characteristics. The wettability properties of plasma-polymerized styrene films were dependent upon the degree of incorporation of N into the film. Severe polymerization conditions (high power, low pressure) resulted in a reduction in aromaticity of PP films. The electrical properties of certain plasma polymers were reported. Experiments to optimize coating parameters for the continuous coating of a moving substrate have been carried out. The reactivity of plasma polymers... 

The wettability properties of a given surface are summarized by the contact angle, dw, which roughly defines the shape of a deposited liquid drop. Contact... 

Zisman, W. A., Durability and wettability properties of monomolecular films on solids, in Friction and wear (ed. R. Davies), Elesevier, Amsterdam, 1959, pp. 110-148. 

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