Heat of immersion of zinc oxide in organic liquids. 2. Immersion in benzene, cyclohexene, and cyclohexane

Langmuir ◽  
1985 ◽  
Vol 1 (5) ◽  
pp. 544-548 ◽  
Author(s):  
Yasuharu Suda ◽  
Tetsuo Morimoto
Keyword(s):  
Zinc Oxide ◽  
Organic Liquids ◽  
Heat Of Immersion

INTERACTION ENERGIES OF ORGANIC MOLECULES WITH RUTILE AND GRAPHON SURFACES FROM HEATS OF IMMERSION

1955 ◽  
Vol 33 (2) ◽  
pp. 251-258 ◽  
Author(s):  
J. J. Chessick ◽  
A. C. Zettlemoyer ◽  
F. H. Healey ◽  
G. J. Young
Keyword(s):  
Dipole Moment ◽  
Adsorption Energy ◽  
Organic Molecules ◽  
Average Distance ◽  
Van Der Waals ◽  
Surface Force ◽  
Organic Liquids ◽  
Heat Of Immersion ◽  
Heats Of Immersion ◽  
Wetting Liquid

The heats of immersion of rutile in a series of short chain organic liquids are found experimentally to be an approximate linear function of the dipole moment of the wetting liquid. The significance of the relation is discussed in terms of the polar van der Waals force contribution which is primarily dependent on dipole moment. The average distance of approach of a dipole to the rutile surface and the effective surface force field extending from the rutile surface are calculated.The net adsorption energy, which is calculated directly from heat of immersion data, is related to the energy contributions resulting from the various polar and nonpolar van der Waals forces active in the adsorption process: These energy contributions which make up the total adsorption energy are calculated for the interaction of an alcohol and a hydrocarbon with both a heteropolar (rutile) and a homopolar (Graphon) surface. On the basis of the results obtained, the effects of chain length and functionality of the liquids on the heat of immersion are discussed.

scholarly journals Heat of Immersion of Zinc Oxide

1970 ◽  
Vol 12 ◽  
pp. 142-145
Author(s):  
Toshio Sakurai ◽  
Heihachiro Okabe ◽  
Takeshi Isoda
Keyword(s):  
Zinc Oxide ◽  
Heat Of Immersion

scholarly journals The heat of immersion of zinc oxide in water

1968 ◽  
Vol 226 (2) ◽  
pp. 188-188
Author(s):  
T. Morimoto ◽  
M. Nagao ◽  
M. Hirata
Keyword(s):  
Zinc Oxide ◽  
Heat Of Immersion

The heat of immersion of zinc oxide in water

1968 ◽  
Vol 225 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Tetsuo Morimoto ◽  
Mahiko Nagao ◽  
Miyoshi Hirata
Keyword(s):  
Zinc Oxide ◽  
Heat Of Immersion

Extraction and identification of fillers and pigments from pyrolyzed rubber and tire samples

1996 ◽  
Vol 54 ◽  
pp. 174-175
Author(s):  
P. Sadhukhan ◽  
J. B. Zimmerman
Keyword(s):  
Zinc Oxide ◽  
Electron Microscope ◽  
Carbon Black ◽  
Natural Rubber ◽  
Transmission Electron Microscope ◽  
Rolling Resistance ◽  
Synthetic Polymers ◽  
Nitrogen Atmosphere ◽  
Transmission Electron ◽  
Curing Agents

Rubber stocks, specially tires, are composed of natural rubber and synthetic polymers and also of several compounding ingredients, such as carbon black, silica, zinc oxide etc. These are generally mixed and vulcanized with additional curing agents, mainly organic in nature, to achieve certain “designing properties” including wear, traction, rolling resistance and handling of tires. Considerable importance is, therefore, attached both by the manufacturers and their competitors to be able to extract, identify and characterize various types of fillers and pigments. Several analytical procedures have been in use to extract, preferentially, these fillers and pigments and subsequently identify and characterize them under a transmission electron microscope.Rubber stocks and tire sections are subjected to heat under nitrogen atmosphere to 550°C for one hour and then cooled under nitrogen to remove polymers, leaving behind carbon black, silica and zinc oxide and 650°C to eliminate carbon blacks, leaving only silica and zinc oxide.

Analysis of Sputtered Zinc Oxide Films

1980 ◽  
Vol 38 ◽  
pp. 416-417
Author(s):  
T. A. Emma ◽  
M. P. Singh
Keyword(s):  
Electron Microscopy ◽  
Zinc Oxide ◽  
Piezoelectric Materials ◽  
Oxide Films ◽  
Optical Quality ◽  
Zno Films ◽  
Rf Power ◽  
X Ray Diffraction ◽  
Sputtered Films ◽  
Zinc Oxide Films

Optical quality zinc oxide films have been characterized using reflection electron diffraction (RED), replication electron microscopy (REM), scanning electron microscopy (SEM), and X-ray diffraction (XRD). Significant microstructural differences were observed between rf sputtered films and planar magnetron rf sputtered films. Piezoelectric materials have been attractive for applications to integrated optics since they provide an active medium for signal processing. Among the desirable physical characteristics of sputtered ZnO films used for this and related applications are a highly preferred crystallographic texture and relatively smooth surfaces. It has been found that these characteristics are very sensitive to the type and condition of the substrate and to the several sputtering parameters: target, rf power, gas composition and substrate temperature.

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