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العمر : 29
عدد الرسائل : 774
المزاج : عامل احلي دماغ
البلد : egypt
الجامعة : حلوان
الكلية : العلوم
الشعبة : فيزياء حيوية و طبية
تاريخ التسجيل : 25/11/2007
نقاط : 23172
http://biophysics.3oloum.org
01112008
The Properties of Water and their Role in Colloidal


and Biological Systems,

Volume 16


(Interface Science and Technology)



By Carel Jan van Oss








  • Publisher: Academic Press
  • Number Of Pages: 236
  • Publication Date: 2008-11-17
  • Binding: Hardcover


Product Description


This
book treats the different current as well as unusual and hitherto often
unstudied physico-chemical and surface-thermodynamic properties of
water that govern all polar interactions occurring in it. These
properties include the hyper-hydrophobicity of the water-air interface,
the cluster formation of water molecules in the liquid state and the
concomitant variability of the ratio of the electron-accepticity to
electron-donicity of liquid water as a function of temperature, T. The
increase of that ratio with T is the cause of the increase in hydration
repulsion ("hydration pressure") between polar surfaces upon heating,
when they are immersed in water.

The
book also treats the surface properties of apolar and polar molecules,
polymers, particles and cells, as well as their mutual interaction
energies, when immersed in water, under the influence of the three
prevailing non-covalent forces, i.e., Lewis acid-base (AB),
Lifshitz-van der Waals (LW) and electrical double layer (EL)
interactions. The polar AB interactions, be they attractive or
repulsive, typically represent up to 90% of the total interaction
energies occurring in water. Thus the addition of AB energies to the LW
+ EL energies of the classical DLVO theory of energy vs. distance
analysis makes this powerful tool (the Extended DLVO theory) applicable
to the quantitative study of the stability of particle suspensions in
water. The influence of AB forces on the interfacial tension between
water and other condensed-phase materials is stressed and serves, inter
alia, to explain, measure and calculate the driving force of the
hydrophobic attraction between such materials (the "hydrophobic
effect"), when immersed in water. These phenomena, which are typical
for liquid water, influence all polar interactions that take place in
it. All of these are treated from the viewpoint of the properties of
liquid water itself, including the properties of advancing
freezing fronts and the surface properties of ice at 0o C.



- Explains and allows the quantitative measurement of hydrophobic attraction and hydrophilic repulsion in water
- Measures the degree of cluster formation of water molecules
- Discusses the influence of temperature on the cluster size of water molecules
- Treats the multitudinous effects of the hyper-hydrophobicity of the water-air interface


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