Materials Literature
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Abstract An alternative process to the conventional melt compounding for the incorporation of paper fibers into polyolefins was developed, based on the dispersion of paper fibers in a hot polyolefin solution and the subsequent precipitation of the polymer by cooling, which leads to an homogeneous polyolefin/paper comp…
Abstract Several thermoplastic starches (TPSs), i.e. ethylenebisformamide, sorbitol and ethylene‐sorbitol plasticized (EPTPS, SPTPS and ESPTPS) were prepared and their retrogradation was investigated by X‐ray diffraction, Fourier‐transform infrared spectroscopy (FT‐IR) and scanning electron microscopy (SEM). These stu…
In the process of kaolin improvement to types of residue are generated and dispose in the environment. The first residue, about 70%wt, generated from the washing of the kaolin and the second generated residue from the improvement in sieve 200 mesh (0.074mm), of the remaining of the washed kaolin 30%. These residues ca…
Cu 2 O quantum dots (QDs) have been synthesized on single crystal SrTiO3 (100) substrates with focused ion beam (FIB) modification using oxygen plasma-assisted molecular beam epitaxy. In a set of experiments, QD growth location has been controlled using FIB implants to modify the growth surface in discrete locations p…
Abstract Nuclear waste actinides can be used as a booster fissile fuel material in form of mixed fuel with thorium in a CANDU reactor in order to assure the initial criticality at startup. Two different fuel compositions have been found useful to provide sufficient reactor criticality over a long operation period: 1)…
We studied how hydrothermal treatment per se or combined ultrasonic-hydrothermal treatment affects the micromorphology and phase composition of yttrium hydroxonitrates. We show that ultrasonication during the hydrothermal treatment of yttrium hydroxonitrate suspensions of the bulk composition Y(OH) 2.53 (NO 3 ) 0.47 ·…
The excellent strength-to-density ratio, stiffness and high temperature corrosion resistance of titanium alloys make them attractive to engineers working in sectors such as aerospace, automotive and sporting goods. High processing costs usually limit titanium alloys' use in high-volume applications, but American resea…
Thin films of Nickel Phthalocyanine (NiPc) are fabricated at a base pressure of 10 -5 m.bar using Hind‐Hivac thermal evaporation plant. The films are deposited on to glass substrates at various temperatures 318, 363, 408 and 458K. The optical absorption spectra of these thin films are measured. Present studies reveal…
The crystal structure of anion-deficient La0.70Sr0.30MnO3−δ manganites (δ = 0, 0.10, 0.15, and 0.20) has been studied by powder neutron diffraction at room temperature. The crystal structures of the stoichiometric La0.70Sr0.30MnO3 and anion-deficient La0.70Sr0.30MnO2.90 samples are satisfactorily described by the rhom…
The pressure-specific volume-temperature (p-v-T) relationship of polymers are important for the analysis of injection molding process. In the study, the p-v-T data for polypropylene Malen P type J-400 were measured during slow isobaric cooling. From the results of these measurements, the p-v-T data of the amorphous an…
Abstract The absorption spectra and fluorescence spectra of a coumarin derivative (1), designed to be a water-soluble photolabile protecting group for caged compounds, were successfully observed in aqueous buffer solutions at pH 2.0–12.5 for the first time. Coumarin 1 is highly soluble (>5 mM) in aqueous buffer…
Abstract Summary: A novel class of polymer has been prepared by reaction of a copolyimide containing carboxylic acid groups, and a cobalt phthalocyanine peripherally substituted with a reactive hydroxyl group. The incorporation of the phthalocyanine ring was achieved by esterification of the carboxylic acid groups of…
Crystals of M (AsO 3 OH) ( M = Sr and Ba) were synthesized under hydrothermal conditions; single-crystal X-ray structure investigations were performed. The average structure of Sr(AsO 3 OH) exhibits three crystallographically different hydrogen bonds; two of them are related by -1 symmetry [space group P -1, a = 7.349…
The catalytic decomposition of acrylonitrile with catalysts was investigated in a bench scale fixed bed reactor in this study. Two catalysts, including Pt∕γ-Al2O3 and Cr2O3∕α-Al2O3 , were tested to study their catalytic activity in the complete oxidation of acrylonitrile. The results show that the Pt∕γ-Al2O3 catalyst…
The charge transport and noise properties of three terminal, gated devices containing multiple single-wall metallic and semiconducting carbon nanotubes were measured at room temperature. Applying a high voltage pulsed bias at the drain terminal the metallic tubes were ablated sequentially, enabling the separation of m…
Abstract On August ninth, 2004, at the Mihama nuclear power plant in Japan, a carbon steel pipe line carrying hot water under high pressure burst, killing five workers employed in maintenance job nearby. The major cause for the burst was presumed to be the pipe wall thinning due to so‐called erosion‐corrosion which ha…
A new simple low-temperature hydrothermal process without addition of any surfactant or complexing agent was put forward to synthesize uniform ZnO nanorods, in which hydrazine hydrate instead of NaOH was used as mineralizer. X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and UV-vis…
The development and industrialization of some liquid crystal materials: the ester with strong positive dielectric anisotropy for TN LCD, the tolan with large birefringence, the alkenyl with large k33/k11 elastic ratio and the azine with large birefringence and high N-I transition temperature for STN LCD, and the fluor…
The condition for the rearrangement of martensite variant (RMV) by magnetic field has been studied quantitatively in a wide temperature range for two types of alloys: a Ni 2 MnGa with 10M martensite and a Ni 2.02 Mn 1.09 Ga 0.89 with 14M martensite. The RMV by magnetic field occurs at any temperature for the 10M marte…
Characterization of materials is crucial for the quantification and prediction of their physical, chemical, and mechanical properties. However, as the complexity of a system increases, so do the challenges involved in elucidating its structure. While molecular simulation and modeling have proved invaluable as compleme…