Materials Literature
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Well-defined magnetic nanovesicles are obtained through self-assembly of double hydrophilic PEG–PDMAEMA block copolymers and oleic-coated iron oxide nanoparticles.
Arm-first divergent approach combined with selective precipitation has been developed to synthesize dendrimer-like polystyrenes efficiently and economically.
Mixed alkali borate glasses of composition xLi2O-(30−x)K2O-10WO3-60B2O3 (0 ≤ x ≤ 30 mol%) were prepared by melt quench technique. The structure of present glass system was investigated by Raman spectroscopy. The characteristic bands of these glasses due to the stretching and bending vibrations were identified and anal…
Exfoliated graphite with large expanding volume (EV) was prepared by two-step intercalation, in which the mixture of nitric acid and phosphoric acid, and that of nitric acid and acetic acid were employed as intercalating agent step by step, and potassium permanganate was used as oxidant. Its preparation conditions wer…
To measure fabric permeability over the body at air velocities encountered in running, a series of air pressure measurements were conducted on a mannequin torso in a wind tunnel. Pressure measurements were made at wind speeds of 3.3 m/sec, 5.3 m/sec and 10.0 m/sec from 15 pressure taps that ringed the circumference of…
This brief review analyzes the parameters that can be used to guide the generation of hierarchic systems that include inorganic and/or biological nanoscale objects. Importance of interface effects and geometrical factors are underlined. The mutual influence between the substrate and the deposited material is an import…
Nitrosamines formed in the CO2 capture process are considered potential environmental hazards and ways to minimize the formation of these degradation products are necessary. Here, a catalytic nitrosamine hydrogenation with amine recovery approach is proposed. Palladium-based heterogeneous catalysts were screened initi…
The tube inside and outside heat transfer mechanism of Passive Residual Heat Removal Heat Exchanger (PRHR HX) was analyzed. The calculation method of this special heat exchanger under natural convection condition in In-containment Refueling Water Storage Tank (IRWST) was carried out. The single-tube coupling model thr…
Chitosan fluorescent films containing 7-hydroxy-4-methylcoumarin (7H4MC) have been successfully prepared. Used chitosan was obtained from chitin isolated from skin of tiger prawns (Penaeus monodon) through the deproteination, demineralization, and deacetylation process. The yields of chitin and chitosan are 10.66% and…
New mixed-valence trinuclear iron pentafluorobenzoate complexes were synthesized. Their valence-detrapping and/or valence-trapping phenomena were studied by (57)Fe Mössbauer spectroscopy and X-ray crystallography. For [Fe3O(C6F5CO2)6(py)3]·CH2Cl2 (1), a valence-trapped state was observed at low temperatures, while the…
Wood Plastic Composite (WPC) has attracted great interest in outdoor building products for the reduced cost and the possibility of using recycled materials. Nevertheless the material shows two problems: the large viscosity due to the presence of high concentrations of filler and the degradation of cellulose during pro…
The ac and dc conductivity in barium-vanadate glasses was investigated as a function of temperature and frequency with the use of impedance spectroscopy. The topography and microstructure of glasses were investigated by the means of X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods. The XRD result…
The sintering of different ZnO nanostructures by the thermal decomposition of zinc acetate is reported. Morphological changes from nanorods to nanoparticles are exhibited with the increase of the decomposition temperature from 300 to 500°C. The material showed a loss in the crystalline order with the increase in the t…
Sa disponibilité et son faible coût ont fait de la terre dans la plupart des régions du globe, un des matériaux de construction les plus répondus et plus anciens. La terre présente un intérêt écologique évidant, où sa construction participe bien à la protection de l’environnement à l’industrie chimique (fabrication de…
Strain-induced corrosion cracking in low alloyed steels has been extensively investigated during the last decades. One finding from recent investigations is that small amounts of chlorides tend to increase the cracking susceptibility of such materials. The present paper investigates the effect of chloride addition on…
Laminated Ti/Al2O3 composite was fabricated by tape casting with close control of thickness (about 200 µm) of Al2O3 and titanium layers. The green tapes of titanium and Al2O3 were prepared at room temperature due to high flexibility and strength. In order to improve the density of green layers, the binder removal temp…
Fibers obtained from de sugarcane bagasse are being investigated as possible engineering materials. Their application as reinforcement of polymer composites is of interest due not only to environmental benefits associated with a waste recycling but also to their biodegradable and renewable characterisitics. Since it i…
Four amphiphilic peptides with designed hairpin structure were synthesized and their monolayers were employed as model systems to study biologically inspired calcium carbonate crystallization. Langmuir monolayers of hairpin peptides were investigated by surface pressure area isotherms, surface potential isotherms, Bre…
The CPU (Compression and Purification Unit) is used to capture, purify and compress the CO 2 contained in oxy-combustion boiler flue gas. Therefore, it plays a key role in the oxy-combustion route for carbon capture and storage (CCS). Over the last ten years Air Liquide has been developing this technology from a conce…
We present the study based on extended Maxwell-Garnett effective medium theory for the effective dielectric function of the diamond like carbon film with embedded silver nanoparticles (DLC-Ag) and rigorous coupled-wave analysis to evaluate resonance characteristics in a visible range of periodic 1-D grating structure…