127. Studies in light absorption. Part I. p-Benzoquinones
E. A. Braude, J. Chem. Soc., 1945, 490 DOI: 10.1039/JR9450000490
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Comparison of the Structures of Stretched Linear Polymers
Published x-ray data from crystalline selenium and tellurium and from stretched sulfur (amorphous), polyethylene, polyisobutylene, polyvinyl alcohol, polyvinyl chloride, polyvinylidine chloride, polyoxymethylene, polyoxyethylene, polyethylene disulfide, polyethylene tetrasulfide, and polyphosphonitrile chloride are co…
Bedeutung beschränkt freier Drehbarkeit für die Viskosität und Strömungsdoppelbrechung von Fadenmolekellösungen I
Helvetica Chimica ActaVolume 28, Issue 1 p. 1533-1579 Article Bedeutung beschränkt freier Drehbarkeit für die Viskosität und Strömungsdoppelbrechung von Fadenmolekellösungen I Werner Kuhn, Werner Kuhn Physikalisch-Chemische Anstalt der Universität BaselSearch for more papers by this authorHans Kuhn, Hans Kuhn Physikal…
164. The crystal structure of coronene: a quantitative X-ray investigation
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The dielectric constant of crystalline powders
Abstract A formula is derived with the aid of which it is possible to compute the dielectric constant of a compact crystal from that of a crystalline powder. The formula is checked by means of experimental data.
Theory of Filler Reinforcement
For small loadings (up to about 10 percent volume parts) the colloidal carbon black spheres may be considered as suspended in a continuous rubber matrix. In the present paper this model is generalized for ellipsoidal (including plate- and rod-like) filler particles and it is extended to the computation of various prop…
A resonant-cavity method for measuring dielectric properties at ultrahigh frequencies
A re-entrant cylindrical cavity has been adapted to measure the dielectric constant and power factor of small disk samples of insulating materials. The methods of measurement, mechanical details, and electric coupling and detecting circuits all are described. A single cavity can be utilized only over a frequency range…
An apparatus for the determination of surface and interfacial tension
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn apparatus for the determination of surface and interfacial tensionOtto F. Steinbach Cite this: J. Chem. Educ. 1944, 21, 12, 582Publication Date (Print):December 1, 1944Publication History Received3 August 2009Published online1 December 1944Published inissue 1 December 194…
Stress-Strain Data for Vulcanized Rubber under Various Types of Deformation
Abstract Stress-strain data are given for two types of vulcanized rubber: (1) an 8% S rubber, and (2) a latex rubber. The types of deformation studied were simple elongation, 2-dimensional extension (or compression), pure shear, and combined elongation and shear. Comparison with the theoretical relations based on the…
Epoxidation of Oleic Acid, Methyl Oleate and Oleyl Alcohol with Perbenzoic Acid
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEpoxidation of Oleic Acid, Methyl Oleate and Oleyl Alcohol with Perbenzoic AcidDaniel Swern, Thomas W. Findley, and John T. ScanlanCite this: J. Am. Chem. Soc. 1944, 66, 11, 1925–1927Publication Date (Print):November 1, 1944Publication History Published online1 May 2002Publi…
The Variation with Temperature of the Dynamic Properties of Rubber and Synthetic Rubber-like Materials
Two mechanical properties of rubber-like materials relevant to the design of anti-vibration devices are the dynamic elastic compression modulus and the associated resilience. A method is described for the evaluation of these properties over the temperature range 5° to 40° C. Results are given for natural rubber, for t…
VOLUME CHANGE ATTENDING LOW‐TO‐HIGH INVERSION OF CRISTOBALITE *
A bstract The volume expansion of cristobalite, as it passes through the low‐temperature inversion range, was studied by means of a dilatometer in which the cristobalite expanded against a column of mercury. The volume change was measured in a capillary tube attached to the mercury column. The temperature of inversion…
PROPERTIES OF SOME VYCOR‐BRAND GLASSES *
A bstract Physical and chemical properties are discussed for Vycor‐brand 96% silica glasses prepared from glasses of lower silica content by a leaching process, and a brief résumé of this process is given. The intermediate porous glass and a translucent or white opaque form of the final 96% silica glass made by the Mu…
Limiting Law of the Reinforcement of Rubber
The effect of the filler upon the modulus of compounded rubber has been calculated with the aid of some simplifying assumptions. From these calculations it is found that the increase in modulus, caused by the filler, is directly proportional to the volume loading, and is independent of the particle size of the filler.…
The X-RayK-Absorption Edge for Sodium and the Secondary Structure Accompanying the Edge for the Sodium Halides
A high vacuum, curved-crystal spectrograph was constructed for study of the $K$-absorption edge and the accompanying secondary absorption structures for evaporated films of sodium metal and of the sodium halides. Comparison of the $K{\ensuremath{\beta}}_{x}$ emission line and the $K$-absorption edge for metallic sodiu…
The Thickness of Electron Microscopic Objects
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Derivatives of the Methylchlorosilanes. I. Trimethylsilanol and its Simple Ethers
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDerivatives of the Methylchlorosilanes. I. Trimethylsilanol and its Simple EthersRobert O. SauerCite this: J. Am. Chem. Soc. 1944, 66, 10, 1707–1710Publication Date (Print):October 1, 1944Publication History Published online1 May 2002Published inissue 1 October 1944https://p…
Effect of Deformation on the Swelling Capacity of Rubber
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, Heats of Vaporization, and Entropies of Some Alkali Halides
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…
Rate of Sedimentation
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…