Calcium Thionyl Chloride High‐Rate Reserve Cell
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Crystalline morphology of isothermally crystallized branched polyethylene
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystalline morphology of isothermally crystallized branched polyethyleneM. Glotin and L. MandelkernCite this: Macromolecules 1981, 14, 5, 1394–1404Publication Date (Print):September 1, 1981Publication History Published online1 May 2002Published inissue 1 September 1981https…
Estimation of the χ parameter for poly(dimethylsiloxane) solutions by the UNIFAC group contribution method
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEstimation of the χ parameter for poly(dimethylsiloxane) solutions by the UNIFAC group contribution methodMoshe GottliebMoshe GottliebMore by Moshe Gottlieb and Mordechay HerskowitzMordechay HerskowitzMore by Mordechay HerskowitzCite this: Macromolecules 1981, 14, 5, 1468–14…
Optical activity induced in terbium(III) tris(pyridine-2,6-dicarboxylate) through association with certain chiral amino acids
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOptical activity induced in terbium(III) tris(pyridine-2,6-dicarboxylate) through association with certain chiral amino acidsHarry G. BrittainCite this: Inorg. Chem. 1981, 20, 9, 3007–3013Publication Date (Print):September 1, 1981Publication History Published online1 May 200…
An a b i n i t i o study of the conformational energetics of N-benzylideneaniline
A b initio calculations employing both minimal (STO–4G) and split valence (4–31G) basis sets have been used to study the conformational energy surface of N-benzylideneaniline (NBA). The former indicate that the minimum energy conformation of NBA corresponds to a rotation about the N–phenyl bond of ≊ 45° and a rotation…
Electronic Structure Theory
This paper reviews the history of IBM contributions over the last quarter century to electronic structure theory. The two main sections of the paper deal with large-scale computations in quantum chemistry and the study of the electronic structure of solids. The paper briefly discusses the methods of ab initio quantum…
Volume dependence of the elastic equation of state. 2. Solution-cured poly(dimethylsiloxane)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVolume dependence of the elastic equation of state. 2. Solution-cured poly(dimethylsiloxane)R. W. Brotzman and B. E. EichingerCite this: Macromolecules 1981, 14, 5, 1445–1448Publication Date (Print):September 1, 1981Publication History Published online1 May 2002Published ini…
Weathering of glauconites: reversal of the glauconitization process in a soil profile in western France
Abstract Polarizing microscope, electron microprobe and X-ray diffraction examination of minerals in a soil profile developed on a glauconite sand indicate that destabilization of glauconite can be a progressive process which appears to be the reverse of glauconitization. Glauconite in these soils appears to be destab…
Photoresponsive polymers. Dynamics of conformational changes of polyamides with backbone azobenzene groups
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoresponsive polymers. Dynamics of conformational changes of polyamides with backbone azobenzene groupsMasahiro Irie and Wolfram SchnabelCite this: Macromolecules 1981, 14, 5, 1246–1249Publication Date (Print):September 1, 1981Publication History Published online1 May 200…
Characterization of the Reversion Process in Accelerated Sulfur Curing of Natural Rubber
Abstract From studies of a series of accelerated sulfur vulcanizations of natural rubber, the structural basis of the reversion in macroscopic physical-mechanical properties has been determined. The amount of chemically induced trans -methine butadiene-like structure increases as the reversion process proceeds. When t…
Radiation‐induced oxidative degradation of poly(vinyl chloride)
Abstract Gas evolution and oxygen consumption in the γ‐irradiation of PVC were studied. The gas evolution and the oxidative degradation are retarded by the presence of plasticizers and stabilizers. The G (HCI) and G (H 2 ) and 8 and 0.24 for the irradiation of pure PVC under vacuum and 0.02 and 0.14 for that of plasti…
Reactions of metalloporphyrin .pi. radicals. 2. Thin-layer spectroelectrochemistry of zinc tetraphenylporphyrin cation radicals and dications in the presence of nitrogenous bases
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of metalloporphyrin .pi. radicals. 2. Thin-layer spectroelectrochemistry of zinc tetraphenylporphyrin cation radicals and dications in the presence of nitrogenous basesK. M. Kadish and R. K. RhodesCite this: Inorg. Chem. 1981, 20, 9, 2961–2966Publication Date (Prin…
Diffusion and induced crystallization in polycarbonate
Abstract The study of the effect of thickness on the mass uptake is shown to be quite helpful in the understanding of the complexities of polymer/organic penetrant sorption behavior. Isothermal diffusion results for methanol, acetone, and carbon tetrachloride in polycarbonate plates and films of various thicknesses ra…
Ionic Conductivity in Lithium and Lithium‐Sodium Beta Alumina
This paper presents measurements of ionic conductivity in single crystals of Li + and mixed Li + /Na + beta alumina. The crystals were prepared by ion exchange of Na + beta alumina crystals in , , or with added. The measured room temperature conductivity of Li + beta alumina, about , is higher than earlier values. The…
Dioxygen and nitric oxide complexes of rhodium porphyrins
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDioxygen and nitric oxide complexes of rhodium porphyrinsBradford B. Wayland and Alan R. NewmanCite this: Inorg. Chem. 1981, 20, 9, 3093–3097Publication Date (Print):September 1, 1981Publication History Published online1 May 2002Published inissue 1 September 1981https://pubs…
Model calculations for the coordination ofFe3+andMn2+ions in oxide glasses
Applying the Newman superposition model to the ligand-field splitting of tetrahedrally and octahedrally coordinated ${\mathrm{Fe}}^{3+}$ and ${\mathrm{Mn}}^{2+}$ ions in glass, we have obtained analytical expressions for the dependence of the spin-Hamiltonian parameters ${b}_{2}^{m}$ ($D$ and $E$) on the distortion fr…
Physical aging studies of semicrystalline poly(ethylene terephthalate)
Abstract Physical aging of semicrystalline poly(ethylene terephthalate) has been investigated as a function of crystalline content. Stress–strain, stress relaxation, and differential scanning calorimetry experiments were used to monitor the physical aging process. Both the overall extent and the rate of physical aging…
On the application of phase relationships to complex structures. XVIII.RANTAN–randomMULTAN
To overcome the disadvantages of a small starting set in MULTAN a technique is described whereby a large number of phases are given random values with low weights and then refined by a weighted tangent formula. The effectiveness of the process depends quite critically on assigning suitable weights to phase estimates a…
Structural studies of the hydrogen storage material Mg2NiH4. 1. Cubic high-temperature structure
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural studies of the hydrogen storage material Mg2NiH4. 1. Cubic high-temperature structureK. Yvon, J. Schefer, and F. StuckiCite this: Inorg. Chem. 1981, 20, 9, 2776–2778Publication Date (Print):September 1, 1981Publication History Published online1 May 2002Published i…
Prismatic Slip of A1 2 O 3 Single Crystals Below 1000°C in Compression Under Hydrostatic Pressure
Alumina single crystals were compressed perpendicular to the [0001] axis at a constant strain rate between 20° and 950°C. At r>200°C, failure was suppressed by_hydrostatic pressures of 500 to 1500 MPa. Prismatic slip {1120}〈1100〉 was deduced from optical observations of the lateral surfaces and from stress‐optical…