Materials Literature
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Abstract A method is described for the conversion of polystyrene to poly(styrenesulfonic acid) without change in the molecular weight distribution; the reaction is performed at room temperature in 100% H 2 SO 4 and uses Ag + catalyst. The resulting polyelectrolyte has solubility and other characteristics significantly…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation W. F. Leonard, R. L. Ramey; Temperature Coefficient of Resistance in Thin Metal Films. Journal of…
Although certain liquids show Arrhenius viscosity behavior over the whole liquid range, most liquids have a substantial non-Arrhenius range in which their viscosity is described by the free-volume equation. In a few supercooled liquids, there are two distinct non-Arrhenius regions. From a calculation of the volumes re…
The ESR spectra of the powder samples of cubic ZnS:Mn, hexagonal ZnS:Mn, and CdS:Mn are treated theoretically for the case where the exchange interaction exists between the Mn 2+ ions. The comparison of the calculation with experiments indicates that, for a pair of Mn 2+ ions, the resonance spectra are well described…
Abstract Epitaxial deposition of homopolymers from solution [polyethylene, isotactic polystyrene, poly‐3,3‐bischloromethyloxacyclobutane (Penton) and polypropylene] was found on the (001) faces of cleaved alkali halide single crystals. Electron and optical microscopy studies have shown that the polymer usually grew fr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamic Mechanical Properties of Cross-Linked Rubbers. III. Dicumyl Peroxide Vulcanizates of Natural Rubber1Ray A. Dickie and John D. FerryCite this: J. Phys. Chem. 1966, 70, 8, 2594–2600Publication Date (Print):August 1, 1966Publication History Published online1 May 2002Pub…
The effect of pressure to over 200 kbars has been measured on the lattice parameters of iodine, stannic iodide, and of p-di-iodobenzene. All three have a large component of van der Waals binding and each exhibits a compressibility which decreases with increasing pressure. On the basis of the estimated change in distan…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSubstituted Deuteroporphyrins. I. Reactions at the Periphery of the Porphyrin Ring1Winslow S. Caughey, James O. Alben, Wilfred Y. Fujimoto, and J. Lyndal YorkCite this: J. Org. Chem. 1966, 31, 8, 2631–2640Publication Date (Print):August 1, 1966Publication History Published o…
The ionic transport number and the d-c. electrical conductivity of single-crystal and polycrystalline alumina have been studied between 1 000 °K and 1 750 °K at an oxygen partial pressure of 0.2 atm. The ionic transport number was determined by the galvanic-cell e.m.f. measurements; the electrical conductivity was mea…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGlass-Molten Salt InteractionsKurt H. SternCite this: Chem. Rev. 1966, 66, 4, 355–372Publication Date (Print):August 1, 1966Publication History Published online1 May 2002Published inissue 1 August 1966https://pubs.acs.org/doi/10.1021/cr60242a001https://doi.org/10.1021/cr6024…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSubstituted Pyridine N-Oxide Complexes of Copper(II) Halides. II. Magnetic Properties of Complexes with 3-Picoline N-Oxide, 2,6-Lutidine N-Oxide, and 2,4,6-Collidine N-OxideWilliam E. Hatfield and John C. MorrisonCite this: Inorg. Chem. 1966, 5, 8, 1390–1394Publication Date…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Kinetic Study of the Dimerization of Phenyl IsocyanateRobert E. Buckles and L. A. McGrewCite this: J. Am. Chem. Soc. 1966, 88, 15, 3582–3586Publication Date (Print):August 1, 1966Publication History Published online1 May 2002Published inissue 1 August 1966https://pubs.acs.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallographic Data for Some New Type II Clathrate Hydrates1D. F. Sargent and L. D. CalvertCite this: J. Phys. Chem. 1966, 70, 8, 2689–2691Publication Date (Print):August 1, 1966Publication History Published online1 May 2002Published inissue 1 August 1966https://pubs.acs.o…
Paramagnetic resonance has been observed at 4.2°K in magnetically dilute single crystals and powders of bis[hydrotris(1-pyrazolyl)borate]Co(II) and bis[tris(1-pyrazolyl)methane]Co(II) chelate systems. The chelate structure for both types of compound has D3d symmetry, and the principal g tensor components show large ax…
It is shown on the basis of experiments with CoSi(57Co) in a high magnetic field and with magnetically ordered Co0.5Fe0.5Si that iron does not develop a magnetic moment greater than 0.1 μB at low temperature in the system Co1−xFexSi. The results also indicate that the magnetic properties are not directly related to th…
The variation of stacking-fault energy across the alloy systems, Cu-Ni, Cu-Pd and Ag-Pd respectively has been estimated by a texture method based on the dependence of cross-slip on the stacking-fault energy. The variations with composition have been correlated with known changes in the electronic specific heats and ma…
Guarded measurements of the electrical conductivity of high‐purity, polycrystalline Y 2 O 3 in thermodynamic equilibrium with the gas phase were made under controlled temperature and oxygen partial pressure conditions. Data are presented as isobars from 1200° to 1600°C, and as isotherms from oxygen partial pressures o…
Extracts of benzoate-grown Pseudomonas putida have high levels of β-carboxy-cis,cis-muconate-lactonizing enzyme and γ-carboxymuconolactone decarboxylase, even though these enzymes are uniquely associated with the protocate-chuate pathway. Since these activities might result from nonspecific catalysis by the enzymes wh…
Since disordering can have a marked influence on absorption spectra in the infrared range, it appeared worthwhile to examine and compare the spectra of the various modifications of SiO2 and AlPO4.