Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural control of conjugation in functionalized polythiophenesJean Roncali, Pascal Marque, Robert Garreau, Francis Garnier, and Marc LemaireCite this: Macromolecules 1990, 23, 5, 1347–1352Publication Date (Print):March 1, 1990Publication History Published online1 May 200…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular orientation in LB films of azobenzene-containing long-chain fatty acids and their barium salts studied by FT-IR transmission and reflection-absorption spectroscopyTakeshi Kawai, Junzo Umemura, and Tohru TakenakaCite this: Langmuir 1990, 6, 3, 672–676Publication Dat…
Abstract A series of poly(ether/ester)s 1 based on poly(butylene terephthalate) Systematic IUPAC nomenclature: poly(oxytetramethyleneoxyterephthaloyl). and poly(ethylene glycol) is synthesized. 1 H and 13 C nuclear magnetic resonance, infrared and differential scanning calorimetry (DSC) measurements prove a block stru…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProbe diffusion in polyacrylamide gels as observed by means of holographic relaxation methods: search for a universal equationIl Hyun Park, Charles S. Johnson Jr., and Don A. GabrielCite this: Macromolecules 1990, 23, 5, 1548–1553Publication Date (Print):March 1, 1990Publica…
Abstract An empirical method to estimate rapidly both mean total layer charge and location of charge in smectites and vermiculites is presented, involving exchange with a long-chain alkylammonium ion before and after the Greene-Kelly test. The method utilizes an empirically determined relationship between XRD basal sp…
High-resolution specific-heat measurements on a small (0.2 mg) single crystal of \ensuremath{\kappa}-(BEDT-TTF${)}_{2}$Cu(NCS${)}_{2}$ in magnetic fields up to 5 T reveal a jump \ensuremath{\Delta}C at ${\mathrm{T}}_{\mathrm{c}}$. Comparison with \ensuremath{\gamma}=34 mJ/mol ${\mathrm{K}}^{2}$ derived from Pauli para…
ABSTRACT Ice diatom assemblages in the Canadian Arctic are dominated by the Naviculaceae, a family which includes the genus Stenoneis Cleve. A taxonomic history of S. inconspicua var. baculus (Cleve) Cleve (including type material of Navicula baculus Cleve) is presented with morphological data including the first SEM…
Using a temperature-humidity-bias (THB) screening test, nine commercial polyimides were evaluated for applications to multichip packages with a multilevel interconnection structure. Among these polyimides, DuPont PI2555 performed best under the test condition, i.e. 85 degrees C/85%RH (relative humidity)/180-V DC bias…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLuminescence at high pressures and magnetic fields and the structure of single-crystal platinum(II) binuclear complexes Mx[Pt2(POP)4].cntdot.nH2O (Mx = Ba2, [NH4]4; POP = P2O5H22-)Ludwig Baer, Helmut Englmeier, Guenter Gliemann, Ulrich Klement, and Klaus Juergen RangeCite th…
A method combining the improved R- Psi method (in which the electrical vector potential R only exists in the conducting region) and the IEM (integral equation method) is described which synthesizes the advantages of the two methods and reduces the CPU time and the storage space required to solve 3-D eddy-current probl…
Abstract The structures of orthorhombic ( a =5.5686(2)Å, b =9.8946 (2)Å, c =3.19369(12Å) and cubic ( a =9.177(3)Å) Cd 2 SnO 4 were refined by Rietveld analysis of X-ray powder diffraction patterns. Both of these polymorphs were chemically treated with hydrogen gas mixtures at 400°C, resulting in a colour change from y…
Benchmark problem 10 of the TEAM workshop consists of steel plates around a coil (non‐linear transient eddy current problem). Six computer codes are applied, and 6 solutions are compared with each other and experimental results for eddy current densities as well as flux densities. Some codes were found to give oscilla…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular model for the mechanical properties of elastomers. 2. Synergic effects in bimodal cross-linked networksYves TermoniaCite this: Macromolecules 1990, 23, 5, 1481–1483Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAbsorption method to clean solvent-contaminated process airBjoern L. Armand, Helena B. Uddholm, and Paer T. VikstroemCite this: Ind. Eng. Chem. Res. 1990, 29, 3, 436–439Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue 1 Ma…
Damage production, radiation annealing and stage I recovery in some FCC metals irradiated with ∼ 1 MeV and ∼ 100 MeV ions near 10 K are studied using electrical resistivity measurements. For ∼ 1 MeV light and heavy ion irradiations, the fraction of stage I recovery and the damage efficiency decrease with the PKA media…
Investigations by neutron diffraction and $^{57}\mathrm{Fe}$ M\"ossbauer measurements are reported on the ternary silicides R${\mathrm{FeSi}}_{2}$ (R=r/rPr,Nd) with the orthorhombic structure of the ${\mathrm{TbFeSi}}_{2}$-type (space group Cmcm). This structure, which is closely related to the ${\mathrm{ThCr}}_{2}$${…
The aim of the present investigation is the development of a unifying framework for modeling free-radical suspension and bulk vinyl chloride polymerizations. A fairly comprehensive but realistic model is described that has the ability to predict the rate of polymerization as well as the molecular properties of polymer…
Abstract The development of a quantitative cation‐selectivity model to predict cation‐exchange equilibria has been a desirable but elusive goal in the field of surface chemistry of soil clay minerals. We critically examine several cation‐selectivity models in this study to establish a predictive, quantitative model fo…
The authors consider the modelling of magnetic saturation and hysteresis within finite-element eddy-current calculation procedures. Specific attention is given to time-stepping methods which deal with both saturation and hysteresis and to single-harmonic time-periodic approximations for cycle problems. It is shown tha…
Wood-polymer composites (WPC) of 13 different Malaysian tropical hardwoods and 10 vinyl monomers and mixtures of monomers were prepared by in situ polymerisation using gamma radiation or the catalyst-heat treatment. The polymer loading achievable was found to be dependent on the wood species and the nature of the impr…