Materials Literature
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Abstract The theory of fibre diagrams as given by Polanyi and first applied to cellulose fibres by Sisson and Kratky enables one to derive the orientation in a fibre from the intensity distribution in the diatropic interferences. Since these interferences are usually too weak in the X‐ray diagrams of cellulose fibres,…
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The differential staining of the "skin" and "core" of viscose rayon by certain dyes has been previously explained on the basis of a more highly oriented skin. Improved meth ods of staining, developed in the present investigation, show that the formation of a skin is more closely related to the crystallization rate of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn X-Ray Diffraction Investigation of Sodium PectateK. J. Palmer and Merle B. HartzogCite this: J. Am. Chem. Soc. 1945, 67, 12, 2122–2127Publication Date (Print):December 1, 1945Publication History Published online1 May 2002Published inissue 1 December 1945https://pubs.acs.o…
Experimental investigations of the strain hardening of metals under combined stresses are usually conducted so that the directions of the principal stresses as well as the ratios of their magnitudes remain constant during any one test. The paper is concerned with incompressible isotropic materials which are stressed i…
A bstract A procedure is outlined for deriving the relationship between n D and v for binary glass systems, using constants previously published by Huggins and Sun. 1 As an example, the Na 2 O‐SiO 2 system is discussed and the results are plotted in two ways. An equation is deduced for the slope of the n D versus v cu…
A theory of the thermal expansion of hexagonal crystals is derived, and shown to account quantitatively for the experimental data on graphite. Certain of the elastic moduli for graphite are estimated, and are at 18°c. approximately: s 11 + s 12 = 1.8×10 -13 cm./dyne s 13 =-4.3×10 -13 cm./dyne s 33 = 58.5×10 -13 cm./dy…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE STRUCTURE OF CUBANITE, CuFe2S3 AND THE COÖRDINATION OF FERROMAGNETIC IRONM. J. BuergerCite this: J. Am. Chem. Soc. 1945, 67, 11, 2056Publication Date (Print):November 1, 1945Publication History Published online1 May 2002Published inissue 1 November 1945https://pubs.acs.o…
Whereas extensive efforts have been directed recently toward improving the mathematical exactness of the statistical mechanical theory of polymer solutions, fundamental limitations set by the nature of the physical approximations have not received adequate attention. A careful comparison between theory and experiment…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTensile Strength in Relation to Molecular Weight of High PolymersPaul J. FloryCite this: J. Am. Chem. Soc. 1945, 67, 11, 2048–2050Publication Date (Print):November 1, 1945Publication History Published online1 May 2002Published inissue 1 November 1945https://pubs.acs.org/doi/…
The variation with temperature of the a and c unti-cell dimensions of hexagonal Ceylon graphite has been measured over the temperature range 15°-800°c. by the X-ray powder method. At 14°·6c., a =2.4562±0.0001 kx. c =6.6943±0.0007 kx. The carbon-carbon bond length, C-C=1.4210±0.0001a. The a dimension shows a slight con…
Zeeman effect data are given for 152 lines of La I and 506 lines of La II in the wave-length range 2257A to 7484A. Spectrograms were made at fields of 81,230, 83,370, and 86,570 oersteds using a Bitter electromagnet, and the 24 plates obtained with three diffraction gratings operating simultaneously were measured with…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Metallic Complexes of Tartrates and Citrates, their Structure and Behavior in Dilute Solutions. I. The Cupric and Nickelous ComplexesM. Bobtelsky and J. JordanCite this: J. Am. Chem. Soc. 1945, 67, 10, 1824–1831Publication Date (Print):October 1, 1945Publication History…
An investigation has been made of some characteristics of hysteresis in the pbysical adsorption of nitrogen on bone char, activated carbon, silica gel, and coconut-shell charcoal at 77.4 0 K. It was found that hysteresis became less pronounced in the order given, occurring only slightly in coconut-shell charcoal and o…
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Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Bruce H. Billings, "Haidinger Interference Fringes in Plane-Parallel Crystalline Plates," J. Opt. Soc. Am. 35, 570-573 (1945) Export Citation BibTex En…
Abstract “Exposure-cracking” is the fissuring which occurs when stretched rubber is placed in an atmosphere containing ozone, and is frequently wrongly described as “sun-cracking”. These cracks form in the rubber at right angles to the applied stress and must be distinguished from crazing, the fissures of which occur…
In this paper the spring-dashpot theory which has been applied in previous papers in this series to single fibers and to yarns is applied here to the experimental investi gations of a plush fabric which have been published by Fox and Schwarz. This serves to outline the experimental methods which should be followed if…
Abstract For small loadings (up to about 10 per cent volume parts) 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-like and rodlike) filler particles, and it is extended to the computation of va…
A general theory of strain and stress compatibility in yielded metals is evolved from well-known experimental results and the Energy of Deformation Theory of Yield due to Huber, von Mises, and more recently Hencky.