Materials Literature
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Abstract Nylon‐6/Attapulgite (ATP) composites were prepared by melt blending in a twin screw extruder. Nylon‐6/ATP composites were tested for its mechanical, rheological, thermal and morphological properties. The results have shown drastic improvement in the flexural modulus by 74% at the loading level of 4% of ATP. T…
Experimental and theoretical simulations of linear and nonlinear optical susceptibilities of the novel Na3La9O3(BO3)8, a ternary oxyborate nonlinear single crystal, are reported here. The calculations were based on one of the most accurate methods for the computation of the linear and nonlinear optical susceptibilitie…
Corrosion behavior of ZrB 2 powder during wet processing in water or ethyl alcohol was studied both with and without an organic additive. Incorporation of oxygen and pH change did not intensively occur during static aging of aqueous slurries, but corrosion was enhanced when stirring the slurries. The oxygen content of…
Abstract PET‐glass fiber composites were prepared by melt mixing of recycled PET with chopped glass fibers (15, 20, and 30 wt%) and their degree of dispersion was assessed by scanning electron microscopy. Rotational rheometry was employed to analyze the interfacial shear strength between the fibers and polymer matrix…
Abstract Well‐defined six‐armed star poly( L ‐lactic acid) (PLLA) with a triphenylene core has been prepared by ring‐opening polymerization of L ‐lactide. As a result of strong π – π interactions between the triphenylene core and the multi‐walled carbon nanotubes (MWCNTs), the polymer was conveniently immobilized on t…
Abstract A simple method to obtain novel nanofibers composed of polyelectrolyte complexes (PECs) has been proposed. It consists of the electrospinning of a mixed homogeneous solution of polyelectrolyte partners, and the formation of PEC during the electrospinning. This was achieved by careful choice of the composition…
Abstract This paper describes the mechanical and thermal characterisation of cross‐linked glycidyl azide polymer (GAP) and GAP–hydroxyl terminated polybutadiene (HTPB) networks. Cross‐linked GAP and GAP–HTPB networks were prepared by reacting GAP diol and GAP–HTPB diol mixture with different diisocyanates. The physica…
Abstract Two new, fully conjugated polymeric cyanine dyes based on trimethine and heptamethine moieties have been synthesized. Both polymers were characterized by gel permeation chromatography, UV‐vis and IR spectroscopy, elementary analysis and cyclic voltammetry. The structure of one material could be confirmed with…
New metallo-nanostructured materials of carbon nanohorns (CNHs), within the family of elongated carbon nanotubes, have been prepared by the coordination of copper(II)-2,2':6',2' '-terpyridine (Cu(II)tpy) with oxidized carbon nanohorns (CNHs-COOH). The resulted CNHs-COO-Cu(II)tpy metallo-nanocomplexes have been charact…
Acoustic measurements using synchrotron radiation have been performed on glassy GeSe2 up to pressures of 9.6 GPa. A minimum observed in the shear-wave velocity, associated anomalous behavior in Poisson's ratio, and discontinuities in elastic moduli at 4 GPa are indicative of a gradual structural transition in the glas…
Abstract PVP solutions were sonicated with high‐intensity ultrasound, and the weight‐average molecular weight was monitored by an ACOMP system. The use of continuous on‐line data to critically evaluate various models showed that the molecular weight decreased towards a limiting value. Theoretical and phenomenological…
N -succinyl- O -carboxymethylchitosan (NSOCMCS), an amphiphilic polyelectrolyte with the property of biocompatibility and functional carboxyl groups, was used as a stabilizer to prepare a well-dispersed suspension of superparamagnetic Fe 3 O 4 nanoparticles, which were composed of a magnetite Fe 3 O 4 core and a NSOCM…
Nanometer-sized silica monoliths with ordered and disordered mesostructures (HOM type) were fabricated by using a simple and fast yet reproducible strategy of an instant direct-templating method of a number of nonionic n -alkyloligo(ethylene oxide), namely, Brij-type (C x EO y ), and Triton- and Tween-type surfactants…
(K 0.5 Na 0.5 )NbO 3 (KNN) is a potential lead‐free replacement for Pb(Zr, Ti)O 3 (PZT) piezoceramics, but its piezoelectric properties are inferior to those of PZT. By growing single crystals of KNN, it may be possible to improve the piezoelectric properties. Recently, single crystals of KNN were grown by the solid‐s…
Polylactide or poly(l-lactic acid) (PLA) is a commercially promising material for use as a renewable and biodegradable plastic. Three novel PLA-degrading enzymes, named PLAase I, II and III, were purified to homogeneity from the culture supernatant of an effective PLA-degrading bacterium, Amycolatopsis orientalis ssp.…
We have developed a procedure for crystal structure generation and prediction for ionic compounds consisting of a collection of cations and rigid complex anions. Our approach is based on global optimization of an energy functional consisting of the electrostatic and soft-sphere repulsive energies using Metropolis Mont…
A facile, environmentally benign shape-controlled synthesis of anisotropic crystalline gold nanostructures at room temperature has been developed using aspartic acid (Asp) as the reducing, particle-stabilizing, and shape-directing agents. Great latitude in the control of particle size and shape, including formation of…
A series of cubic CoO nanocrystals with various morphologies and sizes were obtained via the decomposition of cobalt(II) oleate complex at 280−320 °C in noncoordinating solvent octadecene containing dodecanol/oleic acid. The morphology of CoO nanocrystals could be conveniently tuned by manipulating the decomposition r…
Nanoporous membranes are made based on photoreactive hydrogen-bridged smectic liquid crystal dimers. The self-assembled layered structure is locked by photopolymerization. The hydrogen bridges are reversibly opened by heating or by changing the pH. This forms periodic pores of which the integrity is conserved by a cov…
Open-pore biodegradable foams with controlled porous architectures were prepared by combining gas foaming and microparticulate templating. Microparticulate composites of poly(epsilon-caprolactone) (PCL) and micrometric sodium chloride particles (NaCl), in concentrations ranging from 70/30 to 20/80 wt.-% of PCL/NaCl we…