Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWETTING PROPERTIES OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE COPOLYMERS1Marianne K. Bernett and W. A. ZismanCite this: J. Phys. Chem. 1960, 64, 9, 1292–1294Publication Date (Print):September 1, 1960Publication History Published online1 May 2002Published inissue 1 Septem…
The Mn4+ center in mainly octahedral symmetry has been studied in magnesium fluorogermanate phosphors. Emission and absorption spectra and the temperature dependence of various parameters have been evaluated. Absorption takes place from the 4A2 ground state into the 4F2, 4F1, and higher excited states whereas both emi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTINVESTIGATION OF COLLOIDAL HYDRATED CALCIUM SILICATES. I. SOLUBILITY PRODUCTSS. A. Greenberg, T. N. Chang, and Elaine AndersonCite this: J. Phys. Chem. 1960, 64, 9, 1151–1157Publication Date (Print):September 1, 1960Publication History Published online1 May 2002Published ini…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Oxidation of Thiocyanate Ion by Hydrogen Peroxide. I. The pH-Independent ReactionI. R. Wilson and G. M. HarrisCite this: J. Am. Chem. Soc. 1960, 82, 17, 4515–4517Publication Date (Print):September 1, 1960Publication History Published online1 May 2002Published inissue 1 S…
The authors compare the mechanical behavior of woven and nonwoven fabrics. They outline the principal mechanisms by which woven cloths deform and recover in manufacture and in end usage. They attempt to formulate a parallel sequence of events in the distortion process for nonwovens and to show how these actions influe…
Abstract The degradation of high polymers of ethylene oxide in aqueous and organic solutions is accelerated by strong acids, certain oxidizing agents, ultraviolet light, and certain heavy metal ions. The effectiveness of the latter two components is related to the solution stability of various polymer samples upon lon…
Abstract The reaction of toylene diisocyanate (80/20 mixture of 2,4 and 2,6‐isomer) with a secondary hydroxyl‐containing polyoxypropylene triol was studied in the presence of numerous compounds to test their catalytic effect on the reaction. The reaction was studied by determination of the gelation time of the reactio…
Thin insulating films, less than 100 A thick to a few thousand angstroms, were produced by bombarding a substrate with electrons in the presence of silicone oil vapor. The rate of deposition of the solid film was found to depend on the substrate temperature, electron beam current density, and oil vapor pressure. A the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHelix [UNK] Coil Transitions in Dilute Aqueous Collagen Solutions1Paul J. Flory and Edwin S. WeaverCite this: J. Am. Chem. Soc. 1960, 82, 17, 4518–4525Publication Date (Print):September 1, 1960Publication History Published online1 May 2002Published inissue 1 September 1960ht…
Wire grids have been fabricated with microscopic elements and periodicity. These wire grids behave as linear polarizers over large portions of the infrared spectrum, confirming predictions from electromagnetic theory. The method of fabrication of grids with periods as small as 463 mμ is described. Limits on the perfor…
Twin-domain walls in large crystals of antiferromagnetic NiO have been observed by specular reflection in optically polished and annealed crystals. These walls can be moved in annealed crystals by small mechanical stresses (<106 d/cm2) or by moderate magnetic fields (<25 000 oe) to yield completely untwi…
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Magnetic properties of single crystals of CrBr 3 have been measured with a magnetic balance and also with a torque magnetometer. The ferromagnetic Curie point has been found to be 37°K from the temperature dependences of magnetization and of torque. Based on the data of the magnetic susceptibility above the Curie poin…
The magnetic properties of single crystals of hausmannite (${\mathrm{Mn}}_{3}$${\mathrm{O}}_{4}$) have been investigated between 4.2\ifmmode^\circ\else\textdegree\fi{}K and the ferrimagnetic Curie point at 41.9\ifmmode^\circ\else\textdegree\fi{}K. The $c$ axis was found to be the hard direction of magnetization and th…
Enormous capture cross sections in the range ${10}^{\ensuremath{-}15}$ ${\mathrm{cm}}^{2}$ to ${10}^{\ensuremath{-}12}$ ${\mathrm{cm}}^{2}$ have been observed for a wide variety of Coulomb attractive centers in Si and Ge, some involving binding energies many times the Debye energy. Whereas multiphonon transitions to t…