Materials Literature
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Polymer surfaces have been modified by chemical reaction or thin film deposition using a capacitatively coupled plasma RF-discharge system. This has allowed the production of a graded, reproducible series of surfaces with surface energies ranging from low to high. Three gases, hexafluoroethane (C2F6), perfluoropropane…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDioxygenyl hexafluoroantimonate: a useful reagent for preparing cation radical salts in good yieldJ. P. Dinnocenzo and T. E. BanachCite this: J. Am. Chem. Soc. 1986, 108, 19, 6063–6065Publication Date (Print):September 1, 1986Publication History Published online1 May 2002Pub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOne-electron oxidation of the porphyrin ring of cobaltous octaethylporphyrin (CoIIOEP). Absorption and resonance Raman spectral characteristics of the CoIIOEP+.cntdot.ClO4- .pi.-cation radicalA. Salehi, W. A. Oertling, G. T. Babcock, and C. K. ChangCite this: J. Am. Chem. So…
Using the Landau expansion simple formulas are found that allow for systematic calculations of the tricritical temperature for a given molecular model. The theory is applied to some molecular models of the nematic–smectic A (NA) phase transition of liquid crystals. It is shown exactly that for a large class of molecul…
Abstract The available literature was reviewed to determine the nature and extent of information available on the thermal decomposition products and the toxicity of the combustion products of polyester materials used in consumer applications such as textiles and building construction. This literature review is limited…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFoams: basic properties with application to porous mediaDaniel D. Huang, Alexander Nikolov, and Darsh T. WasanCite this: Langmuir 1986, 2, 5, 672–677Publication Date (Print):September 1, 1986Publication History Published online1 May 2002Published inissue 1 September 1986http…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStability of hydrophobic foamsStig E. Friberg, Irena Blute, Hironobu Kunieda, and Per SteniusCite this: Langmuir 1986, 2, 5, 659–664Publication Date (Print):September 1, 1986Publication History Published online1 May 2002Published inissue 1 September 1986https://pubs.acs.org/…
In this paper a cause of difference for the Steinmetz constant between polycrystalline Mn-Zn ferrite cores and other materials is qualitatively discussed by considering both irreversible domain wall motion and wall extinction.
Abstract Transmission measurements of 2‐deoxy‐D‐ribose, D‐ribose‐5‐phosphate, ATP and DNA at 5 nm intervals were made with thin films in the wavelength region between 150 nm and 260 nm using synchrotron radiation. ATP and DNA exhibited two peaks in the absorption spectra around 260 nm and 190 nm, and a steep increase…
Abstract XRD analysis and electron microscopy show that hexagonal platy halloysite is the main component of an altered tuff (Ueno tuff bed) in the Pliocene Seto group, Aichi Prefecture, Central Japan. In the natural state it shows a single basal peak at 10·1 Å, which collapses to 7·2 Å, by dehydration through a segreg…
An analysis of the 109Ag isotropic chemical shift δ in the glasses of the AgI:Ag2O:B2O3 system is presented. In these glasses, δ covers a range of ∼500 ppm but does not depend linearly upon the fraction of I− anions X=[I]/[Ag]. This means that, when AgI is added to the borate network, structures are preferentially for…
Jump conditions having a hysteresis effect are introduced to model some inertial mechanisms which yield criteria of control of systems. Examples can be found in biology, chemistry, engineering, and economics. Both orientations of the hysteresis loops are considered, corresponding to “delay” and “anticipation” between…
A numerical investigation of the tensile test using a finite-difference, one-dimensional elasto-viscoplastic code is presented. The influence of strain rate, strain rate sensitivity, and inertia on the development of the axial particle velocity, stress, strain, and strain rate profiles in pure copper is studied. The i…
Three regions of the byssus of the marine mussel Mytilus edulis L. are distinct in structural organization at the macroscopic and microscopic level and in amino acid composition. The threads that emanate from the stem at the base of the foot are divided into two regions. The proximal, elastic region has a crimped, den…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReversible oxidation and rereduction of magnesium phthalocyanine electrodes. Electrochemical behavior and in situ Raman spectroscopyJ. L. Kahl, Larry R. Faulkner, K. Dwarakanath, and H. TachikawaCite this: J. Am. Chem. Soc. 1986, 108, 18, 5434–5440Publication Date (Print):Se…
A new method is proposed to estimate the defocus (Δf) from a single electron micrograph (EM). The method has been tested by simulations using theoretical EM's calculated under different defocus conditions. The preliminary method is successful except when the EM is taken near the optimum defocus. This can be improved b…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPeptide plane orientations determined by fundamental and overtone nitrogen 14 NMRR. Tycko, P. L. Stewart, and S. J. OpellaCite this: J. Am. Chem. Soc. 1986, 108, 18, 5419–5425Publication Date (Print):September 1, 1986Publication History Published online1 May 2002Published in…
The defect structure and dielectric properties of BaTiO 3 with 1 to 10 mol% Nd 2 O 3 additions were studied. The results indicated that neodymium occupies the barium site and charge compensation takes place by creation of titanium vacancies. The dependence of inverse electric susceptibility, spontaneous polarization,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA vibrational study of lithium sulfate based fast ionic conducting borate glassesE. I. Kamitsos, M. A. Karakassides, and G. D. ChryssikosCite this: J. Phys. Chem. 1986, 90, 19, 4528–4533Publication Date (Print):September 1, 1986Publication History Published online1 May 2002P…
Effective chain extenders for linear polyesters such as poly(ethylene terephthalate) (PET) and poly(butylene terephthalate) (PBT) were sought among some nitrogen-containing bisheterocycles, which were reactive with hydroxyl terminals of the polyesters to form addition linkages. Tested were such bis cyclic-imino-esters…