Materials Literature
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Abstract Dynamic x‐ray diffraction and dynamic birefringence techniques are employed to determine the nature of the molecular motions associated with the α mechanical loss processes for low‐density polyethylene. The results indicate that the low‐temperature part of this loss (designated α 1 ) is associated with an int…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProton nuclear magnetic resonance line widths and spin relaxation in paramagnetic metalloporphyrins of chromium(III), manganese(III), and iron(III)Gerd N. La Mar and F. Ann. WalkerCite this: J. Am. Chem. Soc. 1973, 95, 21, 6950–6956Publication Date (Print):October 1, 1973Pub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCopper(II) and vanadyl complexes of binucleating ligands. Magnetic exchange interactions propagated through an extensive organic systemElvira F. Hasty, Therese J. Colburn, and David N. HendricksonCite this: Inorg. Chem. 1973, 12, 10, 2414–2421Publication Date (Print):October…
The $4{f}^{1}\ensuremath{\rightarrow}5{d}^{1}$ transitions of ${\mathrm{Ce}}^{3+}$, ${E}_{u}^{\ensuremath{'}\ensuremath{'}}(^{2}F_{\frac{5}{2}})\ensuremath{\rightarrow}{U}_{g}^{\ensuremath{'}}(^{2}T_{2g})$ and ${E}_{u}^{\ensuremath{'}\ensuremath{'}}(^{2}F_{\frac{5}{2}})\ensuremath{\rightarrow}{E}_{g}^{\ensuremath{'}\e…
The results are presented of a detailed study of the efficiency of a sinusoidal diffraction grating in the region of Woods anomalies. Strong absorption and weak re-emission of light due to surface plasmons are observed.
The order-disorder phase transitions in the linear chain compounds ${(\mathrm{C}{\mathrm{H}}_{3})}_{4}$NMn${\mathrm{Cl}}_{3}$ (TMMC), ${(\mathrm{C}{\mathrm{H}}_{3})}_{4}$NNi${\mathrm{Cl}}_{3}$ (TMNC), ${(\mathrm{C}{\mathrm{H}}_{3})}_{4}$NCd${\mathrm{Cl}}_{3}$ (TMCC) were investigated using the complementary techniques…
At low temperatures, metastable crack growth dictates the environment free strength of sapphire. Plastic deformation by dislocation motion or twin formation and growth plays no role in the fracture process at temperatures below 400° C. These conclusions are supported both by crack growth studies and critical stress in…
The relationship between morphology and several physical properties (tensile, thermal, dielectric, and dynamic mechanical properties) of amorphous poly-bisphenol-A-carbonate was examined as a function of annealingtime at temperatures below the glass transition temperature (Tg). The change in structure of the amorphous…
The burn injury hazard of fabrics has been conceptually related to laboratory test methods. The relation is to be de rived from the description of the relevant processes which lead to burn injury. Among these processes stand out the ig nition, the burn and the tissue denaturalization processes as predominately determi…
The ratios of the strain-optical constants were measured for several alkali halides using the author’s zeroth-order pulsed-ultrasound technique. The crystal samples were oriented so that three different experimental conditions were possible. This results in three linear equations in the two unknown ratios p12/p11 and…
The electric field effect of the electron spin resonance for Fe 3+ in SrTiO 3 has been studied. The temperature and electric field dependence of the ESR shift indicates that the induced spin Hamiltonian should involve the square of induced polarization with the form \(\mathscr{H}_{p}{=}\sum T_{ijkl}S_{i}S_{j}P_{k}P_{l…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHomotropilidene-palladium dichloride complexesE. Vedejs, Mary F. Salomon, and Paul D. WeeksCite this: J. Am. Chem. Soc. 1973, 95, 20, 6770–6778Publication Date (Print):October 1, 1973Publication History Published online1 May 2002Published inissue 1 October 1973https://pubs.a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantum mechanical treatment of bond and molecular polarizabilities of some substituted hydrocarbons with ring and chain structuresNitish K. Sanyal, Parvez Ahmad, and L. DixitCite this: J. Phys. Chem. 1973, 77, 21, 2552–2556Publication Date (Print):October 1, 1973Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNature of molecular nitrogen adsorbed over zinc oxideC. C. Chang and R. J. KokesCite this: J. Phys. Chem. 1973, 77, 22, 2640–2645Publication Date (Print):October 1, 1973Publication History Published online1 May 2002Published inissue 1 October 1973https://pubs.acs.org/doi/10.…
Besides ‘Li 2 Al’ which was recently shown to be the phase Li 9 Al 4 there exists the phase Li 3 Al 2 characterized by preparation and X-ray diffraction methods. It cristallizes with a rhomboedric unit cell, R3̄m, a = 4.508 Å, c = 14.26 Å and z = 3 formula units (hexagonal setting). The structure can be looked at as a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew cubic potassium antimony oxide derivative structure with interpenetrating networks. Crystal structure of bismuth gallium antimony oxideA. W. Sleight and R. J. BouchardCite this: Inorg. Chem. 1973, 12, 10, 2314–2316Publication Date (Print):October 1, 1973Publication Histo…
Cathodic polarization studies of crevices in Type 304 stainless steel and copper in 0.6M NaCl solution show that crevices with a distance to crevice opening ratio of 12,000:1 can be polarized and that the pH shifted in the alkaline direction to the domain on the potential-pH diagram (Pourbaix) where water is unstable…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic exchange interactions in transition metal dimers. II. Copper and nickel di-.mu.-azido and .mu.-oxalato complexesD. Michael Duggan and David N. HendricksonCite this: Inorg. Chem. 1973, 12, 10, 2422–2431Publication Date (Print):October 1, 1973Publication History Publi…
Abstract The water absorbency of a bleached softwood kraft pulp, as measured by its water retention value (WRV), was increased up to 30 times by graft polymerizing polyacrylonitrile (PAN) and subsequently hydrolyzing it to sodium polyacrylate–polyacrylamide copolymer. WRV was found to be related to the initial PAN gra…
The density fluctuations contributing to light scattering in a glass are governed by the flctive temperature of the glass and the equilibrium compressibility of the melt. Using ultrasonic velocity data for K 2 O–SiO 2 melts, these compressibilities were evaluated, and the magnitude of the density fluctuations were cal…