bound water


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bound water

[¦bau̇nd ′wȯd·ər]
(chemistry)
Water that is a portion of a system such as tissues or soil and does not form ice crystals until the material's temperature is lowered to about -20°C.
References in periodicals archive ?
When water is added to PETG copolymers, partial water molecules will be tightly bound to PEG flexible chains through hydrogen bonds, and the fluctuations of water molecules consequently slow down, which cause the bound water molecules to have a shorter [T.
Bound water diffusion coefficients into wood in the fiber direction.
Correspondingly, the Palaeosols have substantially more bound water than the Ignimbrite materials, as reflected in the calculated transition water contents (Wang and Schmugge 1980) of 0.
The steep fall could be explained by a change in drying mechanism from evaporation of free surface water to removal of bound water by diffusion from inside the particles.
Residing in the cell wall, bound water affects wood's bulk.
Cylacell blowing agent contains bound water, which causes particles to expand into closed-cell spheres at temperatures above 300 F.
The probability for unbound water, [beta] is increased while the probability for bound water [gamma] remains the same.
Walters found that two big influences on deterioration are the nature of water binding within seeds and the effect of the bound water on seed cells.
ClusterWater enhances the biological effectiveness of active molecules, because the bound water clusters are structurally stabilizing factors and play a role in energy transduction and amplification, even at extreme dilutions, which increases testing sensitivity.
As the temperature decreases, evidently, the vapor pressure in air decreases faster than that of bound water in wood, thereby causing the water to migrate from the cell wall to the air (in the lumina).
The second is the bound water (or adsorbed water) that is present in the cell walls and is held there by the molecular attractive forces.
Further, a new application introduced in 1996 allows MRIL to identify clay bound water and thus determine total porosity ("C/TP").