Materials Literature
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We have performed detailed conductivity and tunneling measurements on the amorphous, magnetically doped material $\ensuremath{\alpha}\text{\ensuremath{-}}{\text{Gd}}_{x}{\text{Si}}_{1\ensuremath{-}x}$, which can be driven through the metal-insulator transition by the application of an external magnetic field. Low temp…
Abstract Summary: Binary and ternary blends of PVC mixed with α ‐methylstyrene/acrylonitrile‐butadiene‐styrene copolymer (AMS‐ABS) and ethylene/vinyl acetate/carbon monoxide terpolymer (EVA‐CO) are investigated, with the aim to obtain a new PVC based material with an improved heat distortion temperature and good proce…
Catalysis plays a critical role in solid oxide fuel cell systems. The electrochemical reactions within the cell--oxygen dissociation on the cathode and electrochemical fuel combustion on the anode--are catalytic reactions. The fuels used in high-temperature fuel cells, for example, natural gas, propane, or liquid hydr…
The electrochemical synthesis of conducting poly(3-methylthiophene) nanocones on carbon cloth, employing an alumina membrane as a template, is reported. The morphological characterization has been done using high- resolution transmission electron microscopy and scanning electron microscopy for both the template-synthe…
Abstract A polyacrylonitrile (PAN) fiber was adopted for the backbone of a chelate polymer and poly(acrylo‐amidino ethylene amine) (PAEA) was prepared through a one‐step reaction between the PAN fiber and ethylenediamine (EDA). The maximum removal capacity and degree of substitution were 7.8 meq per gram of dried PAEA…
Abstract Notch Izod impact strength of poly(propylene) (PP)/glass bead blends was studied as a function of temperature. The results indicated that the toughness for various blends could undergo a brittle‐ductile transition (BDT) with increasing temperature. The BDT temperature ( T BD ) decreased with increasing glass…
Rapid synthesis of poly(3,4-ethylenedioxythiophene) (PEDOT) nanoribbons interleaved between the layers of crystalline V 2 O 5 is achieved for the first time under microwave irradiation via the redox intercalative polymerization reaction of 3,4-ethylenedioxythiophene (EDOT) monomer and crystalline V 2 O 5 at different…
Thin films of ultrahigh molecular weight poly[(R)-3-hydroxybutyrate] (P(3HB)) were sheared and isothermally crystallized at 100 degrees C. Transmission electron microscopy and atomic force microscopy (AFM) observations revealed that thick fibrous textures, on which lamellae are overgrown normal to the long axis of the…
In this paper, we present the challenging application of now well-established general and systematic procedures for model development, statistical discrimination, and validation to a published large-scale dynamic crystallization process model. Because of the model's size, this represents, to our knowledge, the first a…
Abstract Light‐converting polyethylene film containing europium(III) complex with phenanthroline was manufactured under an extrusion process. The film was characterized first by means of time‐of‐flight secondary‐ion‐mass spectrometry (TOF‐SIMS), ultraviolet‐visible‐infrared (UV‐vis‐IR) spectroscopy, then a study of ex…
The reactions of methanol over planar and faceted oxygen-covered Re(123̄1), and over a thin-film oxide on Re(123̄1), are studied using temperature-programmed desorption (TPD), high-resolution X-ray photoelectron spectroscopy (HRXPS), and low-energy electron diffraction (LEED). These surfaces are potential model cataly…
We present a thorough spectroscopic study of γ-( n -hexadecyl)quinolinium tricyanoquinodimethanide, C 16 H 33 Q-3CNQ, a very well-known zwitterionic donor-π-acceptor chromophore, that behaves as a molecular rectifier. Absorption and Raman spectra are collected from solution and solid samples, as well as from Langmuir−…
Biocomposites, i.e., biopolymers reinforced with natural fibers, offer an environmentally benign alternative structural material for automotive applications. Cellulose esters (bioplastic made from cellulose) are potentially useful biosourced polymers. By embedding inexpensive plant-based cellulosic fibers (chopped hem…
The fracture toughness of highly-ordered multi-wall carbon-nanotube-reinforced alumina composites is calculated from experimental data on nanoindentation cracking. A combined analytical and numerical model, using cohesive zone models for both matrix cracking and nanotube crack bridging and accounting for residual stre…
Silicon carbide (SiC) was infiltrated into the ordered mesoporous molecular sieves MCM-48 and SBA-15 using chemical vapor infiltration (CVI) of dimethyldichlorosilane (DDS) and hydrogen as the carrier gas. The infiltration process was followed ex situ using nitrogen physisorption measurements, small- and wide-angle X-…
Titanium(III) pyrochlores with TiIII centers at up to 90 % of the B sites of the A2B2O6O′ pyrochlore structure (see picture; blue: BO6, green: A, red: O′), which is well-known for supporting high oxidation states at the octahedral B sites, were obtained by the low-temperature reduction of lanthanide pyrochlores Ln2Ti2…
Regulation of medium-chain-length polyhydroxyalkanoate biosynthesis in Pseudomonas aeruginosa and Pseudomonas putida was studied conducting PHA accumulation experiments and transcriptional analysis of PHA biosynthesis genes with wild type strains and rpoN-negative mutants. In P. putida PHA accumulation was RpoN-indepe…
Abstract The performance of plasma surface modified silica filler in styrene‐butadiene rubber (SBR) matrix has been analyzed. The conditions of plasma modification have been optimized by taking secant modulus as a standard parameter and the occurrence of the modification has been confirmed by surface area determinatio…
A recently developed procedure for modeling the deformation of single and multi-wall carbon nanotubes [13,14] is applied to nanotube buckling and post-buckling under axial compression. Critical features of the model, which is grounded in elastic shell theory, include identification of (a) an appropriate elastic modulu…
A protocol for the inexpensive fabrication of catalytic microburners with integrated thermocouples is introduced. Experimental data for the oxidation of hydrogen/air mixtures over platinum/alumina microchannels of different channel gap distances is presented. Lean hydrogen/air mixtures are found to be self-igniting, a…