Materials Literature
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Elongation of swollen vulcanized rubber, or other polymeric materials possessing random network structures, should increase the amount of liquid absorbed (dissolved) at equilibrium with an excess of the swelling agent. According to a previously published equation relating to the thermodynamics of stretching and swelli…
Vapor pressures of crystalline KCl, KBr, KI, and NaCl have been measured in the pressure range of 10−1 to 10−7 mm by a surface ionization method. Heats and entropies of vaporization are calculated from the data. The heats of vaporization at 0°K and entropies at 298°K are also calculated. From the data, saturated KCl v…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRate of SedimentationHarold H. SteinourCite this: Ind. Eng. Chem. 1944, 36, 9, 840–847Publication Date (Print):September 1, 1944Publication History Published online1 May 2002Published inissue 1 September 1944https://pubs.acs.org/doi/10.1021/ie50417a018https://doi.org/10.1021…
Abstract 1. The complete decay of stress in the rubbers studied, held at constant elongation, appeared to involve the rupturing of a definite bond, either at some point along the molecular chain or at the cross-linking bond put in by vulcanization. In the case of a Hevea rubber gum stock the data could be fitted very…
Abstract The problem of the thermodynamics of crystal lattices has been treated by rigorous methods recently in a series of papers by Born and collaborators. In particular, Bradburn succeeded in deriving the equation of state for a solid cubic crystal, consisting of identical atoms, under the assumption that the mutua…
Abstract The causes and types of continuous spectra emitted by flames are discussed and their importance stressed. It is shown that the yellow-green continuous spectrum emitted by some flames containing oxides of nitrogen is probably identical with the spectrum of the air after glow and is therefore due to a reaction…
Stauffer, Clinton R.; Thiel, George A.. (1949). The Iron Ores of Southeastern Minnesota. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/59967.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-Ray Diffraction Studies on Protein Fibers. I. The Large Fiber-Axis Period of CollagenRichard S. BearCite this: J. Am. Chem. Soc. 1944, 66, 8, 1297–1305Publication Date (Print):August 1, 1944Publication History Published online1 May 2002Published inissue 1 August 1944https:…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurfaces of Solids. XI. Determination of the Decrease (π) of Free Surface Energy of a Solid by an Adsorbed FilmGeorge Jura and William D. HarkinsCite this: J. Am. Chem. Soc. 1944, 66, 8, 1356–1362Publication Date (Print):August 1, 1944Publication History Published online1 Ma…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSOLUBILITIES OF SOME NORMAL SATURATED ALIPHATIC HYDROCARBONSA. W. RALSTON, C. W. HOERR, and L. T. CREWSCite this: J. Org. Chem. 1944, 09, 4, 319–328Publication Date (Print):July 1, 1944Publication History Published online1 May 2002Published inissue 1 July 1944https://pubs.ac…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE SOLUBILITIES OF THE NORMAL SATURATED FATTY ACIDS. II.C. W. HOERR and A. W. BALSTONCite this: J. Org. Chem. 1944, 09, 4, 329–337Publication Date (Print):July 1, 1944Publication History Published online1 May 2002Published inissue 1 July 1944https://pubs.acs.org/doi/10.1021…
A nickel-molybdenum alloy containing about 20 atom percent of molybdenum exists above 900°C as a cubic close-packed structure. If this alloy is quenched and then held at temperatures below 840°C, an ordering reaction occurs which results in a slight tetragonal distortion of the cubic structure. This ordered structure…
WHEN a transformer is energized, a transient current, known as magnetizing inrush current, generally flows for a short period of time until normal flux conditions are established. Under most practical system conditions, this current transient is of little consequence. However, in very rare cases a combination of circu…
Abstract The crystalline structure of stretched natural rubber has been the subject of much experimental work in the past. A great deal of this has been devoted to the more theoretical aspects, such as x-ray patterns, thermal effects, and volume change. It is now known that neither Buna-N nor GR-S has a fiber diagram…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Weight of Cellulose Measurement of Average Degree of PolymerizationO A. BattistaCite this: Ind. Eng. Chem. Anal. Ed. 1944, 16, 6, 351–354Publication Date (Print):June 1, 1944Publication History Published online1 May 2002Published inissue 1 June 1944https://pubs.acs…
A bstract The dielectric properties of ceramics depend on composition, density, and surface conditions as well as many other factors. Humidity influences the dielectric properties to a large extent. These studies show that the amount of moisture depends on the compacting pressure and that the firing temperature has so…
A bstract Factors have been derived for the calculation of the surface tensions of glasses from their compositions at temperatures of 1200° and 1400°C. The nine oxides evaluated are those commonly found in significant amounts in glass compositions. The surface tension of a glass may be calculated with a fair degree of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInhibition of Foaming in Solvents Containing Known FoamersSydney. Ross and J. W. McBainCite this: Ind. Eng. Chem. 1944, 36, 6, 570–573Publication Date (Print):June 1, 1944Publication History Published online1 May 2002Published inissue 1 June 1944https://pubs.acs.org/doi/10.1…
Stokes and Wilson(1,2) have shown that the integral breadths of the Debye-Scherrer lines produced by small or imperfect crystals of the cubic system are given by or, what is the same thing, that the apparent particle sizes are given by In these equations λ is the X-ray wave-length, θ is the Bragg angle, V t is the vol…
When a transformer is energized, a transient current, known as magnetizing inrush current, generally flows for a short period of time until normal flux conditions are established. Under most practical system conditions, this current transient is of little consequence. However, in very rare cases a combination of circu…