Materials Literature
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This article reports on the development of thermoplastic composites using innovative curvilinear 3D multi-layer flat knitted spacer fabrics produced by single stage manufacturing. Thermoplastic composites from textile-based, complex-shaped sandwich preforms, for instance, curvilinear-shaped 3D multi-layer spacer fabri…
Large-scale starch nanoparticles of about 10–50 nm were obtained by acidic hydrolysis of amylopectin-rich cornstarch (waxy starch). They were used to prepare nanobiocomposites with natural rubber by mastication technique. Up to 30 phr (parts per hundred of rubber) of the filler was successfully incorporated leading, t…
We report on a series of experiments on hydrogels formed by supramolecular hairy-rod conjugated polymers and their lyotropic liquid crystalline behavior. The system is an ionic complex between negatively charged poly[2-(3-thienyl)ethyloxy-4-butylsulfonate)] backbones and cationic cetrimonium side chains. These hairy-r…
A recent dielectric study of various polyalcohols reported on the general occurrence of an ultraslow process with Debye type character in hydrogen bonded liquids [R. Bergman, H. Jansson, and J. Swenson, J. Chem. Phys. 132, 044504 (2010)], whereas previous work suggested that such behavior is specific to monoalcohols o…
The mechanical, thermal, and morphological properties of polycaprolactone (PCL) and bamboo fiber (BF) composites were evaluated. Composites containing maleic anhydride-grafted PCL (PCL-g-MA/BF) exhibited noticeably improved mechanical properties due to better compatibility between the two components in comparison to P…
Here we report the use of a facile photochemical crosslinking method to fabricate stable polymer matrices from unmodified gelatin and fibrinogen. Gels were produced by covalent crosslinking of the proteins in a rapid photo-oxidative process, catalysed by a ruthenium metal complex and irradiation with visible light. Fo…
We have studied isolated semiconductor nanocrystal quantum dots (QDs) and small clusters of QDs by single-molecule time-correlated single-photon counting, from which fluorescence intensity trajectories, autocorrelation functions, decay histograms, and lifetime-intensity distributions have been constructed. These measu…
High-viscosity liquid cis -1,4 polyisoprene (PI), with up to 20 wt % single-wall carbon nanotubes (SWCNTs), has been cross-linked by high pressure and high temperature (HP&HT) treatment at 513 K and pressures in the range 0.5 to 1.5 GPa to yield densified network polymer composites. A composite with 5 wt % SWCNTs show…
Eu(3+)-doped mixed rare earth orthophosphates (rare earth = La, Y, Gd) have been prepared by hydrothermal technology, whose crystal phase and microstructure both vary with the molar ratio of the mixed rare earth ions. For La(x)Y(1-x)PO(4): Eu(3+), the ion radius distinction between the La(3+) and Y(3+) is so large tha…
Abstract A commercial high‐impact polypropylene (hiPP) was fractionated by temperature‐gradient elution fractionation into nine fractions. All fractions were studied using Fourier transform infrared spectroscopy and differential scanning calorimetry. The amount of ethylene in the fractions was also determined. The res…
Plastic deformation is size dependent, this is observed in experiments and simulations and has a fundamental effect in crystalline materials with average grain size in the nanometer range. Recent experiments show that plastic deformation is not only affected by the average grain size but also by the grain size distrib…
Abstract We report on a contactless, all‐optical study of carrier diffusion and recombination kinetics in single‐crystalline diamond layers using the light‐induced transient grating (LITG) technique. Decay times of transient diffraction grating yielded carrier lifetime of τ R ≈ 3 ns and bipolar diffusion coefficient D…
Well-aligned single-crystalline ZnS nanowire arrays have been grown on highly conductive Cu substrates through controlling the morphology evolution of self-patterned ZnS nanoparticles. The ZnS nanowires have sharp tips with an average size of approximately 30 nm and a length of approximately 3 microm. Field emission m…
Two novel sandwich-type silicotungstates, TBA(8)[{Zn(2)W(O)O(3)}(2)H(4){α-SiW(9)O(33)}(2)]·5H(2)O (α-Zn4; TBA = tetra-n-butylammonium) and TBA(8)[{Zn(2)W(O)O(3)}(2)H(4){β-SiW(9)O(33)}(2)]·7H(2)O (β-Zn4), were synthesized by the solid-state thermally induced isomerization of metastable TBA(8)[{Zn(OH(2))(μ(3)-OH)}(2){Zn…
The effect of Yb(3+) concentration on the broadband emission intensity and peak wavelength shift in Yb/Bi ions co-doped silicate glasses is investigated. The optimal Bi(2)O(3) concentration range is about 2.0-2.5 mol% in 65SiO(2)-10Al(2)O(3)-25CaO matrix (SAC glasses). For Yb/Bi codoped SAC glasses, the maximum emissi…
Abstract Nanoporous magnetic materials composed of metal‐assembled complexes are expected to exhibit chemical sensitivity. In this work, we observed a humidity‐induced reversible change between ferromagnetism and antiferromagnetism in a new type of a cobalt octacyanoniobate based magnet in the high‐humidity region. Th…
Capping agent (triethanolamine (TEA), diethanolamine (DEA), ethylene glycol (EG)) assisted silver-catalyzed nickel particles with flowerlike morphology has been synthesized using nickel(II) chloride hexahydrate as a precursor and hydrazine hydrate as a reducing agent by simple heating at 60 °C for 10 min. X-ray diffra…
The adsorption of water on KBr thin films evaporated onto SiO 2 was investigated as a function of relative humidity (RH) by ambient pressure X-ray photoelectron spectroscopy. At 30% RH, adsorbed water reaches a coverage of approximately 1 ML (monolayer). As the humidity continues to increase, the coverage of water rem…
Gold-peapodded Ga(2)O(3) nanowires were fabricated successfully in a well-controlled manner by thermal annealing of core-shell gold-Ga(2)O(3) nanowires. During the heating process, the core gold nanowires were broken up into chains of nanoparticles at sufficiently high temperature by the mechanism of Rayleigh instabil…
We report on the self-assembling behavior in thin films of mixtures of polystyrene- block -poly(ethylene oxide) copolymers (PS- b -PEO), having PEO cylindrical microdomains, with poly(acrylic acid) homopolymers (PAA). We study the effect of adding PAA of different molecular weights, specifically interacting with the P…