Materials Literature
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As an example of the free radical polymerization reactor we have conducted a theoretical study of the high pressure polyethylene tubular reactor with cooling from the jacket. The plug flow model including the axial dispersion is considered with as well as without the steady state assumption for the active intermediate…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of boron substituents in borirenes, boriranes, and boranes. The energies of B-X bondsPeter H. M. Budzelaar, Alexander J. Kos, Timothy Clark, and Paul von Rague SchleyerCite this: Organometallics 1985, 4, 3, 429–437Publication Date (Print):March 1, 1985Publication His…
The deep violet, crystalline binuclear manganese complex 3 is formed in ca. 30% yield on irradiation of a mixture of the tricarbonyl complex 1 and thiirane S-oxide 2. The Mn–S distances are short (ca. 212 pm) and the SO bond is hardly longer (150.4 pm) that that of free SO. There is no bonding interaction between the…
The use of large volume sealed stainless steel capsules has allowed the measurement of a transition temperature in wool at a range of moisture contents using differential scanning calorimetry. Aged wool showed an endothermic peak that disappeared after cooling from above the transition temperature, but was restored wi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBehavior of automotive noble metal catalysts in cycled feedstreamsHideaki Muraki, Hirofumi Shinjoh, Hideo Sobukawa, Kohji Yokota, and Yoshiyasu FujitaniCite this: Ind. Eng. Chem. Prod. Res. Dev. 1985, 24, 1, 43–49Publication Date (Print):March 1, 1985Publication History Publ…
The syntheses of several 4-n-alkyl-, 4-[2-(trans-4-n-alkylcyclohexyl)ethyl]-, 4-[2-(4-n-alkylphenyl)ethyl]- and 4-n-alkoxy-4′-cyano-2′-fluorobiphenyls and -4′-cyano-2-fluorobiphenyls are presented and the transition temperatures for these compounds are reported and discussed. In the alkylcyanobiphenyls, a 2-fluoro-sub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMeasurement of the correlation hole in homogeneous block copolymer meltsFrank S. BatesCite this: Macromolecules 1985, 18, 3, 525–528Publication Date (Print):March 1, 1985Publication History Published online1 May 2002Published inissue 1 March 1985https://pubs.acs.org/doi/10.1…
Abstract not Available.
A review is given of the phenomenological description, the experimental determination and the theoretical considerations and calculations of the anchoring energy in liquid crystals. The order of magnitude of the anchring energy is also compared with the bulk and interfacial energies of liquid crystals.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPoly[p-(formyloxy)styrene]: synthesis and radiation-induced decarbonylationJean M. J. Frechet, Theodore G. Tessier, C. Grant Willson, and Hiroshi ItoCite this: Macromolecules 1985, 18, 3, 317–321Publication Date (Print):March 1, 1985Publication History Published online1 May…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe clusters [Co8S6(SPh)8]4-,5-: preparations, properties, and structural relationship of near-cubic Co8(.mu.4-S)6 cores to the clusters in synthetic pentlanditeG. Christou, K. S. Hagen, J. K. Bashkin, and R. H. HolmCite this: Inorg. Chem. 1985, 24, 7, 1010–1018Publication D…
The phase-matched generation of the optical second harmonic was investigated in the chiral smectic C* phase of a classical ferroelectric liquid crystal (DOBAMBC). The phase-matching was achieved either by incidence angle or by temperature tuning. The temperature behaviour of the second order nonlinear susceptibility w…
Electron microscope observations of domain configurations associated with the incommensurate phases of quartz and aluminum phosphate are presented and successfully interpreted in terms of a theoretical model.
The fraction of four‐coordinated boron was observed to increase from 10% in a rapidly cooled aluminum borosilicate glass fiber to 16% in the same fiber after it was annealed; the refractive index also increased. The index of the annealed fiber agreed with that of the bulk glass. Crystallization was not observed in the…
The thermal degradation of cellulose and its phosphorylated products (phosphates, diethylphosphate, and diphenylphosphate) were studied in air and nitrogen by differential thermal analysis and dynamic thermogravimetry from ambient temperature to 750°C. From the resulting data various thermodynamic parameters were obta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics and mechanism of platinum deposition by photoelectrolysis in illuminated suspensions of semiconducting titanium dioxideJ. S. Curran, J. Domenech, N. Jaffrezic-Renault, and R. PhilippeCite this: J. Phys. Chem. 1985, 89, 6, 957–963Publication Date (Print):March 1, 198…
Abstract The copolymer system HBA (4‐hydroxybenzoic acid) and HNA (2,6‐hydroxyhaphthoic acid) has been studied mainly by means of differential scanning calorimetry. Heat capacities for the two homopolymers and three copolymers are reported from 175 to 650 K. The heat capacities are additive with composition. The whole…
We construct a theory of velocity selection and tip stability for dendritic growth in the local evolution model. We show that the growth rate of dendritic patterns is determined by a nonlinear solvability condition for a translating finger. The sidebranching instability is related to a single discrete oscillatory mode…
Conductivity, thermoelectric power, spin concentration and spin dynamics has been measured in polyaniline samples equilibrated at different pH. Data provide evidence for Metal-Insulator transition upon pH variation.
The interaction of carbon monoxide and submonolayer coverages of potassium on Ru(001) has been investigated with high resolution electron energy loss spectroscopy, LEED, Auger electron spectroscopy, thermal desorption, and work function measurements. The adsorption of potassium on ruthenium at submonolayer coverages (…