Materials Literature
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Abstract The rate of adsorption of fractionated polyethylenimine (PEI) from water onto regenerated cellulose fibers was studied as a function of the polymer diffusion coefficient. Differences in polymer molecular weight, salt concentration, and pH were employed to vary the diffusion coefficient which was measured inde…
The thermal diffusivities of dense polycrystalline TiB2, ZrB2, and HfB2 were measured by a laser flash method over the temperature range 200°–1300°C. An investigation of the effects of radial heat flow was performed and a special sample shape was used to comply with the assumption of one-dimensional heat flow. The val…
Abstract A pyrolysis–gas chromatographic technique for measuring the amount of hydrogen chloride released during the high temperature pyrolysis of poly(vinyl chloride) resins, plastisols, copolymers and compounds containing inert fillers has been developed. The technique, which is also applicable to the analysis of ch…
The specific heats of a series of $\ensuremath{\alpha}$-phase Cu-Al and dilute magnetic Cu-Al (Fe) alloys with iron concentrations near 0.07 at.% have been measured over the temperature range 1-14 K. The alloys had aluminum concentrations of 0, 2.5, 5, and 10 at.%. The electronic specific-heat coefficient and the Deby…
The Raman spectra of [ 64 Zn(NH 3 ) 4 ]I 2 and its 68 Zn analog have been measured in the crystalline state. The Zn–N stretching vibrations have been assigned based on the observed metal isotope shifts. These shifts have been compared with theoretical values obtained from a complete normal coordinate analysis on the […
A pilot-scale corona reactor was adapted to process cotton sliver. Corona treatment improved cotton spinnability and increased yarn and fabric strength and abrasion resistance. Treatment effectiveness was greatest at 93-96°C with the injection of dilute chlorine gas into the corona cell. Dyeability was unaltered, cott…
Water dissolves in fused silica to give hydroxyl groups (OH) which give rise to a fundamental absorption band at 3700 cm−1. The reaction of water with silica may be represented formally as ≡Si-O-Si≡ +H2O→2≡Si-OH. Stevenson and Jack found the extinction coefficient of the above band was 77.5±5.1 mole−1 cm−1. Other less…
Six types of polycrystalline MgO, one nominally fully dense and the others having porosities of ∼1 to 2%, were tested in compression up to 1400°C. At 1200°C and above, all materials deformed plastically; two of the materials, both porous, also exhibited plastic flow at temperatures down to 800°C, and a third at 1000°C…
The lattice parameters of the cubic solid solutions from the system (U 1‐∞ Pu ∞ )N were measured at 25°C. The lattice constant, a 0 , of UN was 4.88918±0.00017 Å and that of PuN was 4.90476±0.00008 Å. The parameter of the solid solution does not depend linearly on the composition parameter, x. The X‐ray specimens cont…
Abstract Oxygen partial pressure in equilibrium with nonstoichiometric ceric oxide of a definite composition were determined by equilibration with pure oxygen, air, CO2, and CO2-H2 mixtures at 900, 1000, 1100, 1227, and 1300°C, using a thermobalance. The values for the activities and the relative partial enthalpies an…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRadiation Chemistry of Polymers Studied by Depression of Melting TemperatureR. P. Kusy and D. T. TurnerCite this: Macromolecules 1971, 4, 3, 337–341Publication Date (Print):May 1, 1971Publication History Published online1 May 2002Published inissue 1 May 1971https://pubs.acs.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganometellic Polymers. X. Solution Polymerization of 2-Ferrocenylethyl Acrylate and 2-Ferrocenylethyl MethacrylateCharles U. Pittman Jr., Robert L. Voges, and William R. JonesCite this: Macromolecules 1971, 4, 3, 291–297Publication Date (Print):May 1, 1971Publication Histo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRotary Drum Granulation. An Experimental Study of the Factors Affecting Granule SizeMartin Butensky and Daniel HymanCite this: Ind. Eng. Chem. Fundamen. 1971, 10, 2, 212–219Publication Date (Print):May 1, 1971Publication History Published online1 May 2002Published inissue 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInitiation rate for shock-heated hydrogen-oxygen-carbon monoxide-argon mixtures as determined by OH induction time measurementsW. C. Gardiner Jr., M. McFarland, K. Morinaga, T. Takeyama, and Bennie Frank WalkerCite this: J. Phys. Chem. 1971, 75, 10, 1504–1509Publication Date…
L-threonine and L-lysine
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemistry and oxidation-reduction reactions of tin porphyrinsDavid G. Whitten, Joseph C. N. Yau, and F. A. CarrollCite this: J. Am. Chem. Soc. 1971, 93, 9, 2291–2296Publication Date (Print):May 1, 1971Publication History Published online1 May 2002Published inissue 1 May…
The results of electrocaloric studies of the electrical equation of state of K${\mathrm{H}}_{2}$P${\mathrm{O}}_{4}$ in the temperature region within 1 K of the ferroelectric transition are reported. Chief emphasis is given to determination of the spontaneous polarization. A discontinuous polarization jump of 1.87 \ifm…
Abstract The specific surface area, the water content, and the water adsorption isotherm have been measured in order to investigate the interaction between the surfaces of SiO2, Al2O3, and SiO2·Al2O3 and water molecules. Al2O3 gives II-type adsorption isotherms and the amount of adsorbed water on it increases with a r…
We discuss some difficulties inherent to the light scattering measurement of the viscosity coefficients in paraazoxyanisol. In contrast with a previous report, we present a unique set for these quantities, in reasonable agreement with the conventional determination by Miesowicz.
Cross sections differential in angle and ejection energy for electron production by proton impact on nitrogen, oxygen, neon, and argon have been measured using electrostatic analysis and counting of individual electrons. The range of proton energies was 50-300 keV, the angles ranged from 10\ifmmode^\circ\else\textdegr…