Materials Literature
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Abstract Polyvinyl chloride was condensed with a series of aromatic compounds (benzene, toluene, m ‐xylene, pseudocumene, and mesitylene) in the presence of aluminum chloride. These condensation reactions were carried out in several reaction media, in heterogeneous or semihomogeneous systems. The catalyst concentratio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructures of Some Germanides of Formula M5Ge3Hans Nowotny, Alan W. Searcy, and J. E. OrrCite this: J. Phys. Chem. 1956, 60, 5, 677–678Publication Date (Print):May 1, 1956Publication History Published online1 May 2002Published inissue 1 May 1956https://doi.org/10.1021/j15053…
Abstract Polyethylene may be characterized by use of the light scattering technique applied to the solid polymer. The treatment of Debye and Bueche allows one to assign numerical values to this characterization in the form of two parameters, 〈η 2 〉, the mean square dielectric constant deviation and a size parameter, α…
Magnetic anisotropy induced by magnetic annealing was measured for Ni 3 Fe single crystal by means of a high temperature-torque magnetometer. It was found that the magnitude of anisotropy depends upon the crystallographic direction of the field which is applied during annealing. It was largest for <111>, next for <110…
Numerical methods are used to study the behavior of the energy levels of a nucleus, having nonzero quadrupole moment and spin I = 1 or 32, under the influence of a constant uniform external magnetic field and an electric crystalline field of axial symmetry. These numerical results are of use when experimental conditio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Heats of Reaction of Pyridine and Nitrobenzene with Boron Trifluoride, Trichloride and Tribromide; the Relative Acceptor Properties of the Boron Halides1,2Herbert C. Brown and Robert R. HolmesCite this: J. Am. Chem. Soc. 1956, 78, 10, 2173–2176Publication Date (Print):Ma…
Rates of dehydration under vacuum, and at a series of controlled water vapor pressures, have been carried out for powdered samples of magnesium sulphate heptahydrate and of cobaltous chloride hexahydrate. It has been found for the magnesium salt that as the pressures are increased, the rate at first drops rapidly, thi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallographic Data. 121. Beryllium Sulfide, BeSEugene. StaritzkyCite this: Anal. Chem. 1956, 28, 5, 915Publication Date (Print):May 1, 1956Publication History Published online1 May 2002Published inissue 1 May 1956https://pubs.acs.org/doi/10.1021/ac60113a045https://doi.org…
FeTiO 3 and NiTiO 3 ceramics were synthesized, their thermal, electrical and magnetic properties were investigated and the results obtained were discussed in connection with the crystal structure. Although NiTiO 3 is stable up to high temperatures even in air, FeTiO 3 is partially oxidized even when it is cooled, bein…
Schrifttumsauswertung über das Zustandsschaubild Fe O-Al2O3. Thermoanalytische, mikroskopische und röntgenographische Untersuchungen zur Ermittlung der Liquidus- und Soliduslinien des Systems unter Berücksichtigung des Spinells FeO · Al2O3. Festlegung von zwei eutektischen Punkten bei etwa 5 % Al2O3 und 1330° sowie be…
A theoretical analysis of the factors governing pickspacing has been carried out as part of an investigation into the problem of setting-on places in woven fabrics. Mathematical expressions relating the rate of take-up to the position of the cloth fell and the latter to pickspacing are developed for both bumping and n…
The mechanism of decomposition of manganous and ferrous carbonates has been explored by high‐temperature X‐ray diffraction in controlled atmospheres, by differential thermal analysis, and by thermogra vimetric analysis. The heat effects of the series of reactions which occur are calculated from thermochemical data. Th…
The effect on cobalt ferrite of heat treatment in a magnetic field has been studied by neutron diffraction. The data indicate that the magnetic moments are, in general, displaced from the directions which would be expected from consideration of crystalline anisotropy alone. The effect is greater in ferrites that are i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Oxidation of Graphitized Carbon Black.W. R. Smith and M. H. PolleyCite this: J. Phys. Chem. 1956, 60, 5, 689–691Publication Date (Print):May 1, 1956Publication History Published online1 May 2002Published inissue 1 May 1956https://pubs.acs.org/doi/10.1021/j150539a046https…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCritical Micelle Concentrations of Polyoxyethylated Non-ionic Detergents.Lun Hsiao, H. N. Dunning, and P. B. LorenzCite this: J. Phys. Chem. 1956, 60, 5, 657–660Publication Date (Print):May 1, 1956Publication History Published online1 May 2002Published inissue 1 May 1956http…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBorides of Rare Earth MetalsB. Post, D. Moskowitz, and F. W. GlaserCite this: J. Am. Chem. Soc. 1956, 78, 9, 1800–1802Publication Date (Print):May 1, 1956Publication History Published online1 May 2002Published inissue 1 May 1956https://pubs.acs.org/doi/10.1021/ja01590a007htt…
1. The mesoglea of the marine sponge, S. graminea, resembles in its organization and composition the connective tissue of vertebrates in that it is composed of collagen fibers and fibrils embedded in an amorphous matrix containing carbohydrates. 2. Two morphologically distinct forms of spongin fibers, designated spong…
The kinetic theory of melting and freezing is developed from consideration of atom movements at an interface between solid and liquid. The equations developed are shown to have the same form as the corresponding thermodynamic equations. The homogeneous nucleation of a solid phase in a liquid is then considered from th…
A complete treatment is given of the steady state spiral both in growth and evaporation of crystals, taking account of the strain energy around the dislocation. It is shown that when the crystal is evaporating there is a limiting value of the undersaturation beyond which there is no steady state solution of the proble…
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