Materials Literature
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By neutralizing sulphuric acid solutions of tetra(hydrogensulphato)boric acid with various metal hydrogensulphates, sodium, potassium, ammonium, and strontium salts have been prepared. From the compositions of these salts, and from the results of cryoscopic and conductimetric measurements on their solutions in sulphur…
Abstract The presence of free hydroxyls in polyvinyl alcohol presents a multitude of opportunities for changing the properties of this polymer, a fact which is of considerable theoretical and practical interest. The results are presented of a study of the incorporation of nitrile and amino groups in polyvinyl alcohol.…
Abstract NH 3 sorption and/or retention over the pressure range of 0 to 100 ml. of mercury by dry bentonite, halloysite, and synthetic gibbsite was investigated using a manometric technique employing equilibrium measurements in a special sorption apparatus. Chemisorbed NH 3 is believed to be that which has gained a pr…
Specific binding sites for potassium, which may be components of the carriers for active transport for K in Chlorella, were characterized by their capacity to bind rubidium. A dense suspension was allowed to take up Rb(86) from a low concentration of Rb(86) and a high concentration of ions which saturate non-specific…
Abstract Amphoteric hydroxides are found to possess a great ability to deactivate the “living” ends of polydimethylsiloxane molecules. They not only prevent depolymerization but also suppress the formation of crosslinks between polymer molecules (which is due to the oxidation of methyl groups). Deactivation of active…
Clay Clay minerals Kendposi and Bhonda Mixtures of poorly crystallized kaolinite, montmorillonite, talc and muscovite Appenhalli Poorly crystallized kaolinite (about 70%), admixed with talc and illite Nandihalli Poorly crystallized kaolinite, traces of talc Rairangpur Dickite admixed with muscovite (about 15v/0) and t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of Benzoyl Peroxide and Olefins Catalyzed by Copper SaltsJay K. KochiCite this: J. Am. Chem. Soc. 1962, 84, 9, 1572–1579Publication Date (Print):May 1, 1962Publication History Published online1 May 2002Published inissue 1 May 1962https://pubs.acs.org/doi/10.1021/ja…
The paramagnetic resonance absorption spectra of ${\mathrm{Tb}}^{+++}$ ions in single crystals of CaW${\mathrm{O}}_{4}$ and Ca${\mathrm{F}}_{2}$ have been studied at 4.2\ifmmode^\circ\else\textdegree\fi{}K over a wide range of frequencies from 4 to 50 kMc/sec. The observed spectra fit a simple spin Hamiltonian $\mathc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE PRESSURE OF Ga2O OVER GALLIUM-Ga2O3 MIXTURESC. J. Frosch and C. D. ThurmondCite this: J. Phys. Chem. 1962, 66, 5, 877–878Publication Date (Print):May 1, 1962Publication History Published online1 May 2002Published inissue 1 May 1962https://pubs.acs.org/doi/10.1021/j100811…
The problem of electron binding in solutions is treated on the basis of a continuum model. The polarizable medium is represented by a continuum, which can be characterized by macroscopic properties, e.g. the static and the optical dielectric constants. The motion of an additive electron is determined by its interactio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarrier Characteristics in Copper-Doped WO3 from Conductivity, Hall Voltage, and Thermal E.m.f. StudiesM. J. Sienko and Paul F. WellerCite this: Inorg. Chem. 1962, 1, 2, 324–331Publication Date (Print):May 1, 1962Publication History Published online1 May 2002Published inissu…
Abstract A previously-reported theory for the Mullins softening effect has been used to interpret various new data for the behavior of filled SBR, rubber under tensile load. The strength of the filler-rubber bond, the filler surface area per polymer molecule attachment, and the average filler surface separation have b…
Eight low-lying levels of Er ii 4f12 6s have been observed to be grouped according to their energy in four close pairs. The centers of gravity of the pairs correspond to the energies of the four lowest levels of the core 4f12; the spacings between the two components of the pairs depend on the Coulomb interaction betwe…
The rapid evaporation or condensation of a vapor bubble when out of equilibrium compared to the slow dissolving or growth of an air bubble results in quite different propagation properties of sound waves through water containing one or the other types of bubbles. Adapting a method developed by Foldy in his treatment o…
Four types of measurement on thin Permalloy films are discussed which in the coherent-rotation theory yield equivalent values for the anisotropy field Hk: (A) Hysteresis loop; (B) high field torque; (C) rotational hysteresis; (D) torque 90° to the easy axis. Results reported for several films show that the values obta…
Some ferroelectric and crystallographical properties of the compound ${\mathrm{Bi}}_{4}$${\mathrm{Ti}}_{3}$${\mathrm{O}}_{12}$ are presented. The compound has a dielectric maximum at 685\ifmmode^\circ\else\textdegree\fi{}C on increasing temperature and at 670\ifmmode^\circ\else\textdegree\fi{}C on decreasing temperatu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhthalocyaninosilicon CompoundsRalph D. Joyner and Malcolm E. KenneyCite this: Inorg. Chem. 1962, 1, 2, 236–238Publication Date (Print):May 1, 1962Publication History Published online1 May 2002Published inissue 1 May 1962https://pubs.acs.org/doi/10.1021/ic50002a008https://do…
Tetrahedrally-coordinated trivalent iron has been found to be a common impurity in flux-grown crystals of zinc oxide. The room temperature paramagnetic resonance spectrum of isolated ions may be described by a conventional axial spin Hamiltonian with parameters: $g=2.0060\ifmmode\pm\else\textpm\fi{}0.0005$, $D=\ensure…
The structure of the interrnetallio compound Co4Al,a is similar to that of 'FeA1 a' with which it forms a complete series of solid solutio~m. Refinement of the structure reveals certain differences in detail.
Changes in the structure of PTFE produced by different cooling rates from the sintering temperature and following permanent mechanical deformation have been studied with the electron microscope. Slow cooling rates resulted in longer and wider striated bands (which constitute the PTFE) than fast cooling rates, however,…