Materials Literature
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Previous statistical models, developed to predict the strength of loose fiber bundles and composite materials, have been applied to the problem of predicting the tensile strength of woven fabrics when the underlying strength distributions of the warp and weft threads are known. The woven fabric was first assumed to ac…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEnd-to-end cyclization of a pyrene end-capped poly(bisphenol A-diethylene glycol carbonate)Sylvie Boileau, Francoise Mechin, Jose M. G. Martinho, and Mitchell A. WinnikCite this: Macromolecules 1989, 22, 1, 215–220Publication Date (Print):January 1, 1989Publication History P…
This paper presents the first investigation on the diffusion of electron-hole pairs (generated under cathode-ray excitation) as a function of activator concentration in the oxisulfides ${L}_{2}$${\mathrm{O}}_{2}$S:${\mathrm{Tb}}^{3+}$ with L=Gd, La, or Y. The diffusion was studied by measuring the energy efficiency of…
The perovskite-type layer compound NH3(CH2) 5NH3CdCl4 exhibits two structural phase transitions observed at Tc1 = 337 K and T2 = 417 K, respectively. These phase changes are studied by means of X-ray diffraction, X-ray diffuse scattering and Raman scattering experiments. Evidence is provided for the existence of a con…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNovel melt-processable poly[(acyloxy)aloxane] as alumina precursorYoshiharu Kimura, Masaya Furukawa, Hideki Yamane, and Toshio KitaoCite this: Macromolecules 1989, 22, 1, 79–85Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Published ini…
Abstract Synthesis and crystallographic data on 29 new phases in this family are given. A survey of the crystal chemistry of the complete family, containing 59 phases to date, is presented. The family contains at least seven structural variations, two of which are the pollucite, CsAlSi 2 O 6 and leucite, KAlSi 2 O 6 s…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSingle-crystal EPR spectra of copper-manganese bimetallic ferrimagnetic chainsDante Gatteschi, Olivier Guillou, Claudia Zanchini, Roberta Sessoli, Olivier Kahn, Michel Verdaguer, and Yu PeiCite this: Inorg. Chem. 1989, 28, 2, 287–290Publication Date (Print):January 1, 1989Pu…
A range of poly(L-lactic acid) [L-PLA], poly(DL-lactic acid) [DL-PLA], polyglycolic acid [PGA] polymers and PLA-PGA copolymers were synthesized from lactide and glycolide. The effect of lactide type, catalyst concentration, reaction time and reaction temperature was studied. Intrinsic viscosity determination, gel perm…
Polymer electrolytes (PEs) are ion-conducting complexes formed between a metal salt and a solvating polymer, usually a polyether like poly(ethylene oxide). Electrochemical reactions at PEs/electrode interfaces are reviewed and compared with those of liquid electrolytes. One characteristic of these materials is their e…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSensitized polypyrrole-coated semiconducting powders as materials in photosystems for hydrogen generationAttila Yildiz, Andrzej Sobczynski, A. J. Bard, A. Campion, M. A. Fox, T. E. Mallouk, S. E. Webber, and J. M. WhiteCite this: Langmuir 1989, 5, 1, 148–149Publication Date…
The steady-state modeling of a laminated saturating iron core is discussed. The modeling is in the harmonic domain, i.e. in terms of phasors for the different harmonics due to the nonlinear magnetization characteristic. The procedure is based on a polynomial approximation of the magnetization characteristic. In the ha…
The intensity ratio of the second order to the first order Bragg reflection resulting from smectic A layering is reported for two compounds. In one case this ratio is small (∼ 10−3), which is of the same order as commonly reported. The second compound shows an intensity ratio which is two orders of magnitude higher. I…
The effect of chromium content in the range of 10 to 13% on the mechanical properties has been investigated of a heat resisting steel for turbine rotors. It is revealed that increase in chromium content brings about increased amounts of dissolved chromium and the Cr2(C, N) type carbides, both of which enhance room tem…
Article Diffusion Coefficients of Hydrogen and Deuterium in Iron Determined by Permeation with Gas, Ion and Electrochemical Charging* was published on January 1, 1989 in the journal Zeitschrift für Physikalische Chemie (volume 164, issue 1).
Abstract Accurate vibrational frequencies are reported for pyrazole and for seven N ‐ and C ‐deuterated analogues from FT‐IR spectra for the vapour phase at room temperature, diluted CCl 4 solutions and polycrystalline solids and from Raman spectra in aqueous solutions. Several frequencies are reported for fundamental…
The elastic theory of nemtatic liquid crystals is used to determine whether it gives support for recent experimental observations of a novel periodic phase occurring in homeotropically aligned films when an electric field is applied in the plane of the film. The director remains in the plane defined by the film normal…
SmFe10(TiV)2 melt-spun ribbons based on the ThMn12 structure exhibit the high coercive force of nearly 728 kA/m after annealing at 1073 K. This is the highest value among the reported melt-spun ThMn12-type structure ribbons. Microstructural studies indicate that the ribbons consist of fine ThMn12 grains of 50–150 nm i…
Devonian rocks from the Orcadian Basin show an extreme range of organic maturity. Mean vitrinite reflectance ranges from 0-6 to 10.5~ and spore colour from yellow- orange to black. Illite/smectite (I/S) is abundant in the clay fraction of lacustrine mudrocks and shows variation in expandability from 30 to < 5~. A corr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBehavior of adsorbed polymer layers in shear and elongational flowsM. Bagassi, G. Chauveteau, J. Lecourtier, J. Englert, and M. TirrellCite this: Macromolecules 1989, 22, 1, 262–266Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Publishe…
A new computer code SPECOMP has been developed to calculate displacement damage for compound materials. The code uses primary recoil atom energy distributions from the SPECTER code and thus requires no access to nuclear data bases. For each combination of recoil and matrix atom, the code determines the secondary displ…