Materials Literature
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The coslour pastes employed in the machine printing of textiles are rheologically complex fluids, the viscosity coefficient falling with increase in rate of shear or shearing stress. In order to relate the viscosity of a paste with the quality of the resulting print, it is essential that the measurements of apparent v…
Abstract According to the hypotheses developed by the authors, vulcanized rubber is a system in which the molecular chains are united by local molecular and chemical bonds of varying intensity. The concentration, distribution, and strength of these bonds determine the principal physical and mechanical properties of th…
Phase equilibria along the nonbinary join between cordierite (2MgO · 2Al 2 O 3 · 5SiO 2 ) and spodumene (Li 2 O · Al 2 O 3 · 4SiO 2 ) were investigated in the temperature range 800° to 1550°C. using the quench technique on fourteen compositions. The phase diagram at high temperatures is characterized by a very small r…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid Solutions of the Alkali Halides. I. The Systems KBr—KCl—H2O, RbBr—RbCl—H2O1 and RbBr—KBr—H2O2 at 25°George S. Durham, Elizabeth J. Rock, and Joan S. FraynCite this: J. Am. Chem. Soc. 1953, 75, 23, 5792–5794Publication Date (Print):December 1, 1953Publication History Pu…
The temperature dependence of the nuclear resonance shift in metals has been investigated in lithium, sodium, rubidium, cesium, and gallium. The resonance shifts were found to change by no more than 5 to 6 percent over temperature ranges of 200°, including the melting point. For sodium, the observed temperature depend…
Trivalent aluminum and trivalent gallium have been substituted for trivalent iron in nickel ferrite NiO\ifmmode\cdot\else\textperiodcentered\fi{}${\mathrm{Fe}}_{2}$${\mathrm{O}}_{3}$ to give the systems $\mathrm{NiO}\ifmmode\cdot\else\textperiodcentered\fi{}{\mathrm{Fe}}_{2\ensuremath{-}t}{\mathrm{Al}}_{t}{\mathrm{O}}…
The change of the electrical resistance of active carbon rods due to the reversible adsorption of vapors is described. The effects of six saturated hydrocarbons and ethyl chloride were studied. An interesting regularity in the results obtained with the hydrocarbons was found, namely that the extent of the resistance c…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE PARTIAL AMMONOLYSIS OF SILICON TETRACHLORIDEWalter C. Schumb and Leland H. TowleCite this: J. Am. Chem. Soc. 1953, 75, 23, 6085–6086Publication Date (Print):December 1, 1953Publication History Published online1 May 2002Published inissue 1 December 1953https://pubs.acs.or…
A high-resolution image may be derived from a large number of `dark-field' images of normal resolution, obtained by varying the angle of incidence of the electron beam in a standard electron microscope. The intensity distribution in each dark-field image is multiplied by an appropriate cosine function. Summing gives t…
Abstract The problem considered in this paper is shown in Fig. 1; a thin toroidal shell of center-line radius a and torus mid-surface radius b is slit at its inner edge and welded to relatively stiff cylindrical pipe sections to form an expansion joint. Stresses and axial deformation under the axial load P are desired.
A variety of fibers in similar knit structures were studied to determine the effect of inherent fiber properties on speed of drying under ordinary household conditions. The major part of the drying cycle from near-saturation down to within 15% regain above a 100% R.H. equilibrium moisture regain is characterized by a…
Interfacial reactions of various metals (Be, Mo, Nb, Ni, Si, Ti, and Zr) with dense oxide specimens (Al 2 O 3 , BeO, MgO, ThO 2 , and TiO 2 ) were investigated at temperatures up to 1800°C. The reactions in general occurred in the same order as thermodynamic stabilities indicated. Four general types of behavior were o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal Structures of Rare Earth OxychloridesD. H. Templeton and Carol H. DaubenCite this: J. Am. Chem. Soc. 1953, 75, 23, 6069–6070Publication Date (Print):December 1, 1953Publication History Published online1 May 2002Published inissue 1 December 1953https://pubs.acs.org/do…
Abstract Polystyrene, in common with a number of other long chain polymers, can be crosslinked by exposure to high energy radiation, the degree of crosslinking being directly proportional to the radiation dose. Measurements were made of the solublity in benzene and toluene, as a function of degree of crosslinking. A t…
UO 2 and ThO 2 form a continuous series of solid solutions with the solidus‐liquidus extended from 2875°C. for UO 2 to above 3200°C. for ThO 2 .
During the course of a broader investigation on the cordierite‐spodumene join in the system Li 2 O–MgO–Al 2 O 3 –SiO 2 , a clearer picture of the relationships between the various reported polymorphs of cordierite has been developed. Three forms of cordierite have been recognized.*α‐Cordierite is the stable high‐tempe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Molecular Structure of Polyethylene. V. The Effect of Chain Branching and Molecular Weight on Physical Properties1C. A. Sperati, W. A. Franta, and H. W. Starkweather Jr.Cite this: J. Am. Chem. Soc. 1953, 75, 24, 6127–6133Publication Date (Print):December 1, 1953Publicati…
Optical glasses were produced using arsenic trisulfide as a network former and different sulfides as network modifiers. These glasses transmit infrared up to 12–13 microns in thicknesses useful for optical purposes. The transmission of glassy selenium was determined up to 21 microns and a few composite selenium glasse…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-diffusion of Cations in and through Sulfonated Polystyrene Cation-exchange Polymers1G. E. Boyd and B. A. SoldanoCite this: J. Am. Chem. Soc. 1953, 75, 24, 6091–6099Publication Date (Print):December 1, 1953Publication History Published online1 May 2002Published inissue 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Molecular Structure of Polyethylene. I. Chain Branching in Polyethylene during Polymerization1M. J. RoedelCite this: J. Am. Chem. Soc. 1953, 75, 24, 6110–6112Publication Date (Print):December 1, 1953Publication History Published online1 May 2002Published inissue 1 Decemb…