Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract The comparative studies on the miscibility and phase behavior between the blends of linear and star‐shaped poly(2‐methyl‐2‐oxazoline) with poly(vinylidene fluoride) (PVDF) were carried out in this work. The linear poly(2‐methyl‐2‐oxazoline) was synthesized by the ring opening polymerization of 2‐methyl‐2‐oxaz…
Abstract Grounding on the evidence that thiophene or thiazole rings in donor‐acceptor chromophoric systems promote enhancement of charge transfer and nonlinear optical responses, in this work NLO properties have been investigated of organic polymers containing azoic chromophores based on dinitrothiophene or nitrothiaz…
Abstract Mg/Al layered double hydroxide–oleate and –stearate intercalation compounds were successfully synthesized by the reconstruction method under hydrothermal conditions from calcined hydrotalcite. The intercalation compounds were characterized by the high structural regularity as evidenced by the sharp and intens…
The techniques and mechanisms of the surface modification of polypropylene (PP) fiber used in concrete were discussed in details. The recent progress on the modification studies of PP used in concrete was reviewed.
The adhesion of polymer film of PMMA to different surfaces was measured using the shaft‐loaded blister test. The exposure of the films to saturated water vapor generally leads to a decrease in adhesive strength. The adhesion loss was directly related to the moisture accumulation at the polymer/substrate interface as m…
In the processing of carbon nanotube/polymer composites, the interactions between the nanotube and polymer matrix will occur at the molecular level. Understanding their interactions before curing is crucial for nanocomposites processing. In this study, molecular dynamics (MD) simulations were employed to reveal molecu…
Abstract Blends of polypropylene with silver particles of controlled morphology are performed to elaborate polymer‐metal conductive composites which can present a PTC effect to be used for a specific current limited function. The samples present quite low percolation threshold around 22% in volume of Ag and a resistiv…
This study uses the torsional split-Hopkinson bar to investigate the dynamic shear deformation and fracture behaviour of Ti–6Al–4V alloy under strain rates of 1800, 2300, and 2800 s −1 at temperatures ranging from −100 to 300 °C. It is found that both the strain rate and the temperature have a strong influence on the…
Copper interconnect electromigration (EM) was examined in various structures and three low- k materials ( k =2.65–3.6) using advanced back-end-of-line (BEOL) technology. Various structures for testing were designed to identify the EM failure modes, and extensive failure analysis was carried out to reveal failure in th…
SOFC-MGT hybrid power plants are a very attractive near term option, as they achieve efficiencies of over 60% even for small power outputs (200-400kW). The SOFC hybrid systems currently developed are fuelled with natural gas, which is reformed inside the same stack at about 800-900°C. However, the use of alternative f…
La johnsenite-(Ce), de composition ideale Na 12 (Ce,La,Sr,Ca,□) 3 Ca 6 Mn 3 Zr 3 W (Si 25 O 73 ) (CO 3 )(OH,Cl) 2 , est un nouveau membre du groupe de l'eudyalite, decouvert au mont Saint-Hilaire, Quebec; il s'agit de l'analogue tungstenifere de la zirsilite-(Ce). Elle se presente en cristaux squelettiques fortement c…
Nanocomposites of polyoxymethylene (POM) and organo-modified montmorillonite were obtained by melt mixing method and investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and mechanical testing, respectively. The XRD resul…
In this paper, the response of sandwich panels (Glass/Epoxy/PU Foam) to projectile impact in the velocity range of 30—100 m/s was studied. Three sets of sandwich plates (WRM/Epoxy/Foam, CSM/Epoxy/Foam, and WRM/CSM/Epoxy/Foam) were used. A piston-type gas gun setup was used to accelerate a cylindro-conical mild steel p…
Rosana G. Moreira, Editor-in-Chief; Texas A&M University
An investigation into the complex dielectric permittivity of nematic liquid crystal (NLC) on homogeneous (or planar, molecular director axis parallel the surface of the cell) and homeotropic (molecular director axis perpendicular the surface of the cell) alignments led to the conception of special equivalent electric…
In this paper, Au -loaded TiO 2 ( Au/TiO 2 ) photocatalysts were prepared by photochemical deposition method and characterized by transmission electron microscopy, diffuse reflectance spectroscopy and X-ray photoelectron spectroscopy. The results indicated the metallic Au nanoparticles were deposited on the surface of…
The interaction of water-soluble cationic 5,10,15,20-tetrakis(4- N -methyl pyridyl) porphyrin (H 2 TMPyP4) with some mono-and polynucleotides is studied by time-resolved and steady-state fluorescence spectroscopy, as well as by steady-state absorption spectroscopy. The fluorescence decay kinetics are analyzed by recon…
The adhesion of polyvinylamine to wet cellulose was significantly enhanced by the presence of pendant phenylboronic acid groups. It is proposed that adhesion results from boronate ester formation with cellulose at pH > 8. Experiments with phenol derivatized polyvinylamine gave low adhesion supporting the fact that the…
The photoinduced non-linear optics effects in the TEA-CoCl 2 Br 2 nanocrystallites incorporated into the photopolymer olygoetheracrylate matrices were investigated. The temperature dependence of the photoinduced second harmonic generation demonstrates a remarkable dependence on temperature near the phase transitions.…
In this paper an electrochemical cell is developed to test and follow-up the quality of electrodes made of knitted, woven and non-woven conductive textile material. This cell is constructed of two electrodes planarly positioned against each other using a series of PVC plates. The obtained impedance, as a result of app…