Materials Literature
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The stress-strain properties of a NSSC-fluting medium plasticized with various amounts of ethylene glycol have been measured over a temperature range up to 250°C. By comparison with delignified and hemicellulose-extracted samples it is concluded that the major softening is to a large extent caused by the lignin. It is…
Abstract Chemical shift and scalar coupling constant data have been obtained for the 1 H, 13 C and 29 Si nuclei in allyl, methally, cis ‐ and trans ‐crotyl, cis ‐2‐methyl‐2‐butenyl and 3‐methyl‐2‐butenyl derivatives of trimethylsilane.
Four permanent magnet specimens of the form Sm1-xErx(Co,Fe,Cu,Zr)7.22have been investigated with regard to coercivity, remanence, energy product, and temperature coefficients of remanence and energy product at temperatures ranging from 200K to 800K. The results are compared with previously measured SmCo5and SmCo17type…
The deposition of the hexagonal ferrite films hopeful for high density recording has been attempted by means of Targets-Facing Type(TFT) of sputtering apparatus. The sputtering conditions and the concentration of sputtered films were investigated. The difference in composition between targets and deposited film become…
The nucleophilic substitution reactions between dimethylgalliumchloride (1) and the silyl sulfides (CH 3 ) 3 SiSR (R = CH 3 , C 2 H 5 , n-C 3 H 7, i-C 3 H 7 , Ph and CH 2 Ph) (2-7) in benzene result in the formation of the moisture-sensitive dimethyl(alkylthio)- and dimethyl(phenylthio)gallanes (CH 3 ) 2 GaSR (R = CH…
The time dependence of the rates of permeation of hydrogen through annealed and as-rolled nickel foils was measured in the temperature ranges 120–430°C and 80–200°C, respectively. Annealed specimens exhibited permeabilities, diffusivities and solubilities that were in fairly good agreement with previous results, while…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpecific formation of a polymer containing five-membered oxalactone rings in the main chain in the cationic ring-opening polymerization of 6,8-dioxabicyclo[3.2.1]octan-7-oneMasahiko Okada, Hiroshi Sumitomo, and Miharu AtsumiCite this: Macromolecules 1984, 17, 9, 1840–1843Pub…
Abstract By interfacial polycondensation of 4,4′‐dimercaptobenzophenone with oxalyl, succinyl, adipolyl, suberoyl, and sebacoyl chlorides new polythioesters were obtained. To determine the optimal conditions of interfacial polycondensation the influence of the following factors on yield and value of reduced viscosity…
Abstract Using thermodynamic Green's function technique, it is shown that the inclusion of anharmonic terms along with the mass and force constant change terms arising due to isotopic impurities in the crystal Hamiltonian, leads to a cross term Γ AD of defect with anharmonic parameters in the expression for the phonon…
Parallel biochemical and crystallographic studies have been carried out on the protein concanavalin B from Jack Bean (Canavalis ensiformis). The studies show the protein to be a monomer of 33,000 daltons with unexceptional amino acid composition and no covalently bound carbohydrate. The molecule contains a single, fir…
Today's challenges in the design of power transformers necessitate, among other things, very accurate calculation of the performance parameters of the transformer (such as losses, impedance, shielding, s.c. forces, etc.), reduction of load losses, and preventing overheating and local hot spots. Presented in this paper…
Stress and heat induced demagnetization of Co-Cr films with perpendicular magnetic anisotropy deposited on 50 μm thick polyimide base films has been studied. The loss in remanent magnetization Mrwas detected with a vibrating sample magnetometer VSM after the film had been stressed or heated. Mrdecreases monotonically…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRheooptical investigation of the transition behavior of polyphosphazenesT. P. Russell, D. P. Anderson, R. S. Stein, C. R. Desper, J. J. Beres, and N. S. SchneiderCite this: Macromolecules 1984, 17, 9, 1795–1799Publication Date (Print):September 1, 1984Publication History Pub…
Abstract Diarylnitroxyl radicals and their reduction products, the diaryl hydroxylamines are effective anti-fatigue agents for rubber, confirming the previously proposed mechanism of action of the diaryamincs. The nitroxyls are reduced by sulfur species formed during the vulcanization reaction to a mixture of hydroxyl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMaterial characterization of structural adhesives in the lap shear mode. 1. The effects of rateErol Sancaktar, Steven C. Schenck, and Shrikant PadgilwarCite this: Ind. Eng. Chem. Prod. Res. Dev. 1984, 23, 3, 426–434Publication Date (Print):September 1, 1984Publication Histor…
The first twenty years of microwave radar development was done entirely without the benefit of ferrite devices. The first experimental microwave ferrite device was demonstrated in 1949. Ten more years of research and development on the devices was required before significant performance was achieved and large scale co…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and structure of a cobalt(I) meso-tetraphenylporphyrin complex, [CoI(TPP)][K.cntnd.222]4Cl3.H2OP. Doppelt, J. Fischer, and R. WeissCite this: Inorg. Chem. 1984, 23, 19, 2958–2962Publication Date (Print):September 1, 1984Publication History Published online1 May 200…
The authors performed 169 Tm Mossbauer spectroscopy on the cubic Laves-phase compounds TmNi 2 , TmRh 2 and TmIr 2 in the temperature range 2-300K and found well resolved quadrupolar splitting at low temperature. In cubic compounds this feature is uncommon and they explain it as indicating the presence of a static or d…
Abstract The effect of absorbed doses of ionizing radiation up to 2MGy in the presence of air on the melting behavior of high‐ and low‐density polyethylene was analyzed from data obtained by differential scanning calorimetry. Thermal measurements were made during the first melting after irradiation. The first melting…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBond energies of the ceslum halides determined by collision-induced dissociationE. K. Parks and S. WexlerCite this: J. Phys. Chem. 1984, 88, 20, 4492–4494Publication Date (Print):September 1, 1984Publication History Published online1 May 2002Published inissue 1 September 198…