Spreading, wetting

A. W. Newmann, in Wetting, Spreading, and Adhesion, J. F. Padday, ed.. Academic Press, New York, 1978. 

The gas rises into the transverse colon and can form temporary pockets, which can restrict access of water to the formulation, particularly if the design does not permit uptake of water through the surface. For this reason, distal release of drug can be hampered by poor wetting/spreading and the reduced surface area, leading to restricted absorption. 

The importance of surface energy involves the wetting properties of a liquid when applied on a solid and, in this case, adhesives applied to tissue. The adhesive must spread on the surface to the very hydrophilic, irregular contoured and moist tissue in order to adhere to the tissue and provide a continuous barrier. A liquid must possess a surface energy less than that of the substrate to wet, spread, and adhere to the substrate, otherwise, it will bead and not form a bond with the substrate. For the reader s information, secondary bonds are the forces between adhesives and substrates including hydrogen. 

Liquid Solid S/L Wetting, spreading, lubrication, friction, surface tension, capillarity, electrochemistry, galvanic effects, corrosion, adsorption, nucleation and growth, ion electromigration, optical properties, cleaning techniques. 

The process of wetting when a solid (or liquid) that is initially in contact with gas becomes completely covered by an immiscible liquid phase. See also Wetting, Spreading Wetting, Adhesional Wetting. 

Grundke K (2001) In Holmberg K (ed) Handbook of Applied Surface and Colloid Chemistry Wetting, Spreading and Penetration, chapter 7, vol 2, p 119-140... 

The interaction between the ink and the substrate, both during and after deposition, strongly influences the quality of printing. Dynamic ink-substrate interactions such as ink drop impact, wetting, spreading, penetration, and solvent evaporation rate, as well as drying and coalescence of the ink particles on the substrate, are aU important factors. 

Three types of wetting phenomena have been described adhesional wetting, spreading wetting,... 

I. B. Ivanov, B.V. Toshev and B.P.R. Radoev. On the Thermodynamics of Contact Angles. Line Tension and Wetting Phenomena in Wetting, Spreading and Adhesion, J.F. Padday. Ed., Academic Press (1978) p, 37. 

Monawets [ICI]. TM for a group of surfactants of di-octyl, di-hexyl, di-isobutyl, and di-tride-cyl sulfosuccinates known for their wetting, spreading, penetrating and emulsifying power. 

Surfactants find apphcation in almost all disperse systems that are utilised in areas such as paints, dyestulfs, cosmetics, pharmaceuticals, agrochemicals, fibres, and plastics. Therefore, a fundamental understanding of the physical chemistry of surface-active agents, their unusual properties, and their phase behaviour is essential for most formulation chemists. In addition, an understanding of the basic phenomena involved in the application of surfactants, such as in the preparation of emulsions and suspensions and their subsequent stabilisation, in microemulsions, in wetting, spreading and adhesion, is vitally important to arrive at the correct composition and control of the system involved [1, 2]. This is particularly the case with many formulations in the chemical industry mentioned above. 

The small size of the droplets allows nanoemulsion to be deposited uniformly on substrates. Wetting, spreading and penetration may be also enhanced as a result of the low surface tension of the whole system and the low interfacial tension of the O/W droplets. 

Muolo, M.L. et al.. Wetting, spreading and joining in the alumina-zirconia-Inconel 738 system, Scripta Mater. SO (2004) 325—330. 

Actions of the superficial interphase phenomena of wetting, spreading, and adhesions on a border of oligomer filler... 

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