Materials Literature
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The present note deals with a nonstandard system of differential equations describing a two‐species phase segregation. This system naturally arises in the asymptotic analysis carried out recently by the same authors, as the diffusion coefficient in the equation governing the evolution of the order parameter tends to z…
Polymer/clay nanocomposites show remarkably improved properties (mechanical properties, as well as decreased gas permeability and flammability, etc.) with respect to their microscale counterparts and pristine polymers. Due to the substantially apolar character of most of the organic polymers, natural occurring hydroph…
Single-walled carbon nanotubes were treated with ozone through the UV-ozone irradiation to improve their dispersion in poly(vinyl alcohol) matrix. The untreated single-walled carbon nanotubes-poly(vinyl alcohol) and ozone-treated single-walled carbon nanotubes-poly(vinyl alcohol) nanocomposites were prepared at 1% sin…
ABSTRACT In this work, we report on a technique for manufacturing of polymer scaffolds free from contact with toxic solvents. The method is adapted from the modified microfibrillar reinforced composites (MFC) concept. The objects of the investigation were biodegradable poly ( l ‐lactide) (PLLA) and biocompatible poly…
This work explored the synthesis of carbon-based luminescent materials using cheap, natural resources. Lignin-based carbon/CePO 4 nanocomposites were successfully synthesized using previously extracted lignin solution and CePO 4 , or NaH 2 PO 4 2H 2 O and Ce(NO 3 ) 3 6H 2 O by the solvothermal method at 200 C for 24 h…
The properties of activated carbon are influenced by the conditions of carbonization and activation. Activated carbon is normally produced through a conventional two-step process. This two-step process comprises the carbonization of precursor followed by activation of the carbonaceous char at elevated temperatures wit…
Background: Silver has been used from ancient times by humans, and recently nanoparticles of silver have been used in many aspects of human life including as a potent antibacterial agent. Objectives: In the current study a completely green method to prepare silver nanoparticles is reported. Two types of starches (pota…
The inhibition of unspecific adhesion of human white blood cells is a prerequisite for applications requiring the control of defined surface interactions. In this study, a passivation agent based on polyethylene glycol (PEG) for glass surfaces was investigated for the use with human peripheral blood mononuclear cells…
Two new decavanadate metal compounds, [Co(pyim)3]2[V10O28]·7H2O (1) and [Ni(pyim)3]2[H2V10O28]·4H2O (2) (pyim = 2-(2-pyridyl)-imidazole), have been synthesized under hydrothermal conditions and characterized by elemental analysis, single-crystal X-ray diffraction analysis, infrared spectra, powder X-ray diffraction an…
The transition from a disordered to a face-centered-cubic phase in solvent-free oligomer-tethered nanoparticles is predicted using a density-functional theory for model hard spheres with tethered bead-spring oligomers. The transition occurs without a difference of volume fraction for the two phases, and the phase boun…
The title compound, lead trimanganese tris(orthophosphate), has been synthesized by hydro-thermal methods. In this structure, only two O atoms are in general positions and all others atoms are in the special positions of the Imma space group. Indeed, the atoms in the Wyckoff positions are namely: Pb1 and P1 on 4e (mm2…
Clean and uniformly distributed silver nanoparticles (AgNPs) are deposited on glass substrates using a vacuum evaporation process. The localized surface plasmon resonance (LSPR) of these AgNPs is successfully tuned from 420 to 780 nm by changing the evaporation time from 20 to 180 s. Further, it is found that the LSPR…
Saponite clay belongs to the phyllosilicate family and is comprised of layers of Si(IV) tetrahedra and Al(III) or Mg(II) octahedra with definite interlayer spacing. In these systems, the trivalent ion substitutions in the tetrahedral layers lead to negative charge on the layers. Here we report the dynamics of water co…
The adsorption and corrosion inhibition behavior of synthesized Schiff base-based cationic gemini surfactant bis[p-(N,N,N-tetradecyldimethylammonium bromide)benzylidene]thiourea (14-S-14) on mild steel in 20% formic acid in the temperature range of 30°C to 60°C was evaluated using weight loss measurements, solvent ana…
Abstract Poly(l-lactic acid) (PLLA) gels were formed by complex crystals (ε-crystals) with some solvents, such as N,N-dimethylformamide (DMF), and the solvent in the gel was exchanged to other solvents, such as water, by the immersion of the gel into the solvent. Although X-ray diffraction patterns of the gels indicat…
Silver nanoparticle synthesis produced by green chemistry methods shows potential in areas such as medical applications and biosensing. Here, we show that natural organic macromolecules (NOM) can be used to synthesize and stabilize silver nanoparticles (AgNPs). Silver nitrate was mixed with one of four NOM types that…
Ionizing radiation, including γ rays and X-rays, are high-energy electromagnetic radiation with diverse applications in nuclear energy, astrophysics, and medicine. In this work, we describe the use of ionizing radiation and cysteine-containing elastin-like polypeptides (C(n)ELPs, where n = 2 or 12 cysteines in the pol…
The effects of self-heating on graphene transistor characteristics are examined by self-consistently solving the coupled nonequilibrium Green's function transport equation with the thermal transport equation. The results indicate that the substrate and gate insulator have significant effects on the temperature rise, d…
We report a correlation between magnetoresistivity [Δρmag = ρmag(H,T) − ρmag(0,T)] and magnetic entropy change [ΔSM = SM(H,T) − SM(0,T)] in the metallic spinel CuCr2Te4 which orders ferromagnetically below TC = 320 K. We find that Δρmag = KΔSM for several temperatures around TC with a temperature independent K, which…
Crystals of melaminium benzoate dihydrate (MBDH) have been grown from aqueous solution by slow solvent evaporation method at room temperature. Powder X-ray diffraction analysis confirms that MBDH crystallizes in the monoclinic system ( C2/c ). Thermal decomposition behavior of MBDH has been studied by thermogravimetri…