Materials Literature
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Due to their common use in outdoor applications, the durability of wood flour thermoplastic composites after ultraviolet exposure has become a special concern. Samples of 100% low-density polyethylene (LDPE) and LDPE filled with 10, 20, 30 wt% oak wood flour were melt-processed with a Brabender mixer and further weath…
Recently intergranular stress corrosion cracking (IGSCC) in austenitic stainless steel 316L of Primary Loop Recirculation (PLR) piping and also a nozzle, and several core shrouds (CS) have been experienced in BWRs [1-4]. PWSCC incidences in nickel base alloys of Vessel Head Penetrations (VHP), Bottom Mount Instrumenta…
Two types of regenerate cellulose fibres were oxidized under mild conditions, by using Nhydroxyphthalimide as catalyst and molecular oxygen as ultimate oxidizing agent. The amounts of negatively charged groups introduced were determined by means of potentiometric titration. The degree of polymerization and molar mass…
The supramolecular host molecule heptakis-[6-deoxy-6-(2-aminoethylsulfanyl)]-β-cyclodextrin provides strong control over protein self-assembly in synthetic supramolecular protein constructs. Mono-functionalization of this modified β-cyclodextrin with a cysteine residue allows for site-selective synthetic conjugation t…
Mimicking the hierarchical micro/nanosized architecture of biological materials to produce advanced materials with superior properties is a challenging issue. By using self-consistent field theory, we here propose a novel approach to produce nacre-like nanocomposites through the self-assembly of block copolymers and p…
The performance of triethylenetetramine-tribenzylidene (TTTB) and triethylenetetramine-trisalicylidene (TTTS) as corrosion inhibitors for zinc in hydrochloric acid is investigated. At lower concentrations, both inhibitors accelerate the attack but inhibit corrosion at higher concentrations, e.g., 96-100% with 1.0% con…
Here we report a new "green" method to synthesize Zn(1-x)Cd(x)Se (x = 0-1) and stable red-green-blue tricolor Zn(1-x)Cd(x)Se core/shell nanocrystals using only low cost, phosphine-free and environmentally friendly reagents. The first excitonic absorption peak and photoluminescence (PL) position of the Zn(1-x)Cd(x)Se n…
Using atomic force microscopy, we investigated how the morphology of layer-by-layer deposited polyelectrolyte multilayers is influenced by the physical properties of the supporting substrate. The surface coverage of the assembly and its topography were found to be dependent on the dielectric permittivity of the substr…
The poly(butylene succinate) (PBS) biodegradable composites reinforced with short coir fibres were fabricated by compression molding method. Effect of different fibre contents varying from 10 to 50 wt% on the mechanical and thermal properties of coir/PBS composites have been studied in terms of tensile and flexural pr…
<p>This paper presents the results of a floristic study focusing on taxa representing the genus <em>Gomphonema </em>in Kobylanka stream, situated ca 30 km NW of Kraków. Species belonging to the genus <em>Gomphonema </em>Ehr. were very frequently observed diatom taxa in the material studie…
Triglycine sulfate crystal and potassium bromide doped triglycine sulfate crystals were grown from aqueous solution by slow evaporation method. Energy dispersive X-ray analysis identifies the elements present in the crystal. The Fourier Transform Infrared spectroscopy has been recorded in the range 400 to 4000 cm-1 an…
We present the results of kinetic Monte Carlo simulations aimed at exploring the effect of copolymer sequence distribution on the dynamics of phase separation of an immiscible A/B binary homopolymer blend. Diblock, protein-like copolymers (PLCs), simple linear gradient, random, and alternating copolymers having equal…
There is significant interest in the fabrication of germanium (Ge) doped silica for optoelectronic device applications. In this study, highly photoluminescent Ge centers, metabolically doped into diatom biosilica, are activated by thermal annealing in air. Diatoms are single celled photosynthetic algae that make silic…
This paper reports a simple, one-step, template-free surface assisted growth of crystalline branched-like Au nanoparticles (three-dimensional (3-D) growth with more than 12 tips) with high yield and good size monodispersity at room temperature. The size of the Au branched nanocrystals could be tuned by controlling the…
Spent fuel reprocessing for Fast Breeder Reactor (FBR) requires a dissolver made of a material which is resistant to corrosion as the process involves nitric acid as the process medium. The focus was on the use of advanced materials with high performance in high concentrations (greater than 8 N) and high temperatures…
Ti-doped WO3 electrochromic thin films were deposited onto F-doped tin oxide (FTO) substrates using spin coating technique. The as-deposited films prepared with various concentration of titanium were annealed in air at 500oC. The effect of Ti-doping concentration on structural, surface morphology and optical propertie…
Directional mobility and controlled adhesion of water drops were obtained on superhydrophobic paper surfaces by generating high surface energy ink patterns using commercial desktop printing. By changing the curvature/shapes of the ink patterns, geometrical constraints were imposed on the movement of the three-phase li…
In this paper, we present a boundary integral method for computing the quasi-steady evolution of an epitaxial island. The problem consists of an adatom diffusion equation (with desorption) on terrace and a kinetic boundary condition at the step (island boundary). The normal velocity for step motion is determined by a…
The objective of this investigation was to study the effect of drying temperature and beeswax (BW) content on moisture sorption behavior of whey proteins emulsion films. For this purpose, films were obtained by the casting method and dried at two selected temperatures (5 and 25 °C) and constant relative humidity (RH)…
A highly sensitive and selective fluorescence ratiometric sensor membrane for 2,3,3'-trichlorobiphenyl has been achieved, via depositing polypyrrole nanotubes (PPyNTs, the fluorescence indicator) in nano-porous anodic aluminium oxide (NPAAO) template and subsequently immobilizing fluorescein isothiocyanate (as an inte…