Materials Literature
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The mechanical properties, morphology, thermal stability and flammability of thermoplastic polyurethane/polypropylene-graft-maleic anhydride/wollastonite composites (TPU/PP-g-MA/wollastonite) were investigated. TPU was melt mixed with two loadings of PP-g-MA (5 and 10 phr) and subsequently with 5 phr PP-g-MA and four…
The distribution and effect of applied strain on the collagen fibrils that make up leather may have an important bearing on the ultimate strength and other physical properties of the material. While sections of ovine and bovine leather were being subjected to tensile strain up to rupture, synchrotron-based small-angle…
High‐toughness Sialon ceramic matrix composites containing alloy second‐phase particles were fabricated by hot pressing at a relatively low temperature of 1600°C. Substantially improved fracture toughness of 8.0 MPa·m 1/2 was achieved through the addition of varying amounts of ferro‐molybdenum alloy particles. The mic…
Ten compounds belonging to the series of oxygen-deficient perovskite oxides Ca(2)Fe(2-x)Mn(x)O(5) and CaSrFe(2-x)Mn(x)O(5+y), where x = 1/2, 2/3, and 1 and y ≈ 0-0.5, were synthesized and investigated with respect to the ordering of oxygen vacancies on both local and long-range length scales and the effect on crystal…
Pd- and Pt-based catalysts supported on CeO 2 and Al 2 O 3 have been prepared by traditional incipient wetness impregnation and by solution combustion synthesis, and their catalytic activities have been compared for propane and DME combustion. Kinetic measurements carried out in a laboratory-scale recycle reactor appa…
Tetrabutylammonium fluoride has been found to catalyze the deacylation of cellulose esters. More surprisingly, the deacylation is highly regioselective. Even more remarkably, in contrast with the C-6 regioselectivity of other reactions of cellulose and its derivatives, this deacylation shows substantial selectivity fo…
The miniemulsion process is used as a new route for the preparation of enzyme-responsive nanocapsules with payload-release properties. Peptide-based hybrid nanocapsules are prepared via interfacial polyaddition containing a water-soluble dye that is efficiently encapsulated inside. The influence of the synthetic param…
A simple and green hydrothermal process has been developed to produce Cu from CuO using cellulose as a reductant under mild hydrothermal conditions. The results showed that CuO was easily reduced to Cu in the presence of cellulose, and a complete conversion of CuO into Cu was obtained at a temperature of 250 °C with a…
Aims: This study is aimed at using plant extracts to prevent corrosion of aluminium in acidic medium. The inhibition efficiency of different extracts of 1M HCl, ethanol and distilled water were determined. Study Design: Gravimetric method was used for the analysis.
Pt–Mg/Al 2 O 3 soot oxidation catalysts were prepared by impregnating either magnesium acetate or magnesium nitrate on alumina-supported platinum catalyst. The influence of Mg addition on the structure and catalytic behaviors of Pt/Al 2 O 3 catalysts were investigated by X-ray diffraction (XRD), Brunauer–Emmett–Teller…
The dehydrogenation reaction pathway of Ca(BH 4 ) 2 has been investigated under an isobaric condition of 1 bar of hydrogen. β-Ca(BH 4 ) 2 gradually transforms into the (XRD invisible) amorphous phase at the initial stage. Upon further heating, it decomposes into CaB 2 H x or CaB 12 H 12, indicating that there is a sub…
In this study, we synthesized glass‐ceramics from glasses in the system SiO 2 –B 2 O 3 –Na 2 O–CaO–Al 2 O 3 –MoO 3 –Gd 2 O 3 by various heat treatments. Glass‐ceramics contain only one crystalline phase in the bulk: powellite ( CaMoO 4 ). The influence of molybdenum and rare earth contents on powellite crystallization…
It has recently been shown that Severe Plastic Deformation (SPD) techniques could be used to obtain nanostructured metal hydrides with enhanced hydrogen sorption properties. In this paper we review the different SPD techniques used on metal hydrides and present some specific cases of the effect of cold rolling on the…
Two new polyoxovanadates (Co(N(3)C(5)H(15))(2))(2)[{Co(N(3)C(5)H(15))(2)}V(15)Sb(6)O(42)(H(2)O)]·5H(2)O (1) and (Ni(N(3)C(5)H(15))(2))(2)[{Ni(N(3)C(5)H(15))(2)}V(15)Sb(6)O(42)(H(2)O)]·8H(2)O (2) (N(3)C(5)H(15) = N-(2-aminoethyl)-1,3-propanediamine) were synthesized under solvothermal conditions and structurally charac…
Whereas, commonly, Langmuir monolayers are structurally dominated by the aliphatic chains, we present here the first case of monolayers where the chains merely serve anchoring at the air/water interface and the organization is dictated by the hydrophilic head group self-assembling in a hexagonal lattice. These head gr…
Graphene prepared on Cu foil by chemical vapor deposition was studied as a function of post growth cooling conditions. CuO islands embedded in the graphene film were discovered and studied by scanning electron microscopy, atomic force microscopy, and X-ray photoemission spectroscopy. It is shown that nanostructured ho…
Novel protein chimeras constituted of "silk" and a silica-binding peptide (KSLSRHDHIHHH) were synthesized by genetic or chemical approaches and their influence on silica-silk based chimera composite formation evaluated. Genetic chimeras were constructed from 6 or 15 repeats of the 32 amino acid consensus sequence of N…
Compromise between the electrical conductivity and Seebeck coefficient limits the efficiency of chemical doping in the thermoelectric research. An alternative strategy, involving the control of a local crystal structure, is demonstrated to improve the thermoelectric performance in the RE(2)SbO(2) system. The RE(2)SbO(…
We have experimentally and numerically investigated photo-induced voltage (PIV) effect across a Au film with a dielectric grating. We observed strongly enhanced voltage when surface plasmon polariton (SPP) is excited. It was found that electrons in the Au film are driven to the propagation direction of SPP. We have nu…
The adsorption of gold clusters (Au n, n = 1–10) on the minority surface, (001), of anatase titanium dioxide (TiO 2 ) has been studied in the framework of density functional theory. Various adsorption geometries of gold (Au) clusters on clean, unreconstructed TiO 2 (001) have been investigated. It is found the adsorpt…