Materials Literature
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Volatile inhibitor usage is a relatively recent development in the protection of metals against corrosion. The method of application consists in saturating the metal's storage space with vapors of an appropriate chemical compound, which forms a protective layer by adsorption on the metal surface. In this investigation…
Abstract As discussed in Part I it was generally believed that during the sulfur vulcanization of rubber, important vulcanization intermediates are formed as a result of reactions between components of the various curing systems, e.g., sulfur, accelerator, zinc oxide and elastomer. A variety of reaction products have…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTViscosity and Glass-Transition Behavior of Polymer—Diluent Systems1L. J. Garfield and S. E. PetrieCite this: J. Phys. Chem. 1964, 68, 7, 1750–1754Publication Date (Print):July 1, 1964Publication History Published online1 May 2002Published inissue 1 July 1964https://pubs.acs.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransformations of Eburicoic Acid. V.1 Cleavage of Ring A by the Fungus Glomerella fusarioidesAllen I. Laskin, Paul Grabowich, Carol De Lisle Meyers, and Josef FriedCite this: J. Med. Chem. 1964, 7, 4, 406–409Publication Date (Print):July 1, 1964Publication History Published…
The application of polymers to wool is considered from the point of view of the surface free energies of wool and the polymers. A theory is developed explaining the effectiveness of different polymers in reducing felting shrinkage as heing due to the ease with which spreading can occur over the surface of the wool fib…
Glide dislocation configurations in zone-melted single crystals of molybdenum, deformed in tension at temperatures in the range 4·2–300·K, have been examined by thin film electron transmission microscopy. A majority of the crystals were oriented for single slip on the (011) [111] system, and were sliced and thinned pa…
The effect of an ``insulating sheath'' in reducing radiationless energy losses from a lanthanide chelate is postulated and techniques for developing this sheath are described. Data on luminescence of various europium chelates and synergic agent complexes are presented which demonstrate the efficacy of the sheath. A qu…
In vitro synthesis of collagen by established mouse fibroblast lines has been examined by electron microscopy. During rapid growth (log phase), when collagen could not be detected in the cultures, the cells lacked a well developed granular ergastoplasm and Golgi system. Upon cessation of growth (stationary phase), col…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Temperature on the Surface Tension and Density of Trifluoroacetic Acid.J. J. Jasper and H. L. WedlickCite this: J. Chem. Eng. Data 1964, 9, 3, 446–447Publication Date (Print):July 1, 1964Publication History Published online1 May 2002Published inissue 1 July 1964htt…
Abstract The relationship between biaxial stress‐rupture behavior and polymer morphology has been investigated for a series of compression‐molded disks of linear polyethylene. Rupture data were obtained over a range of temperatures on polymers of several melt indices that had been solidified at two rates. Two failure…
Abstract Since dialkyldichlorosilanes yield almost entirely the cyclic trimeric and tetrameric silazanes by ammonolysis, a method had to be found to convert these oligomers into polymers. This can be done by heating the cyclic compounds with a catalytic amount of ammonium halides, preferably ammonium bromide or ammoni…
An apparatus for absolute thermal expansion measurements has been developed and operated to 2843°C. Thermal expansion characteristics have been measured for niobium carbide, zirconium carbide, tantalum carbide, and the carbide solutions 8TaC·ZrC, 4TaC·ZrC, TaC·ZrC, and TaC·4ZrC. Supporting evidence for a high temperat…
Room temperature thermoelectric and X-ray data are reported for U3P4, U3As4, U3Sb4, U3Se4 and U3Te4. For U3As4 the temperature variations of thermoelectric power and electrical conductivity up to 900°C are shown, and attempts at modification of properties are described. Some thermoelectric data are presented for USb2,…
Abstract The water sorption by adult and embryonic native and insoluble collagen was investigated, along with that of calfskin gelatin. Greater sorption was obtainable with the collagen fractions than with gelatin, but the technique could not distinguish the fractions themselves. The suggestion is made that the greate…
Abstract A study has been carried out of the association phenomena which occur during the polymerization of styrene, isoprene, and butadiene by organolithium initiation. This has been done by means of viscosity measurements of these systems after the conclusion of the polymerization reaction. It has been found that, i…
The equations for the film thickness necessary to achieve the maximum and minimum values of reflectivity and the conditions for zero reflection for systems with one or two dielectric films over a metallic substrate are derived. Extension of results to multilayer systems are made on the basis of simple relationships ob…
Oxygen transfer through a cotton plug follows Fick's law of diffusion. The apparent diffusion constant decreases as the density of cotton packing is increased. Formulas are derived which relate oxygen transfer to cotton-plug dimensions. Calculations indicate that the dimensions of a cotton plug can affect both the max…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFree Volume Model for Transport in Fused Salts: Electrical Conductance in Glass-Forming Nitrate MeltsC. A. AngellCite this: J. Phys. Chem. 1964, 68, 7, 1917–1929Publication Date (Print):July 1, 1964Publication History Published online1 May 2002Published inissue 1 July 1964ht…
The energy band structure of graphite is described in the region of the Fermi surfaces by the Slonczewski-Weiss model. The electron and hole Fermi surfaces are highly elongated and are aligned along the six Brillouin zone edges which are parallel to the trigonal axis of the crystal. The energy is a non-parabolic funct…
The energies of long-wavelength spin waves in iron-nickel alloys have been measured as a function of composition, using a neutron small-angle scattering technique. The behaviour of the composition dependence can be explained in terms of a simple model invoking long-range interaction functions J ( r ) between the three…