Materials Literature
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A superabsorbent resin (SAR) synthesized from carboxymethyl cellulose (CMC) by grafting acrylic acid (AA) was studied using single-factor analysis. The optimum preparation conditions were as follows: plasma discharge power of 250 W, processing time of 90 s, pressure of 300 Pa, m(CMC):m(AA) ratio of 1:9, m(K2S2O8):m(CM…
Ferroics include a range of materials classes with functionalities such as magnetism, polarization, and strain. We review coexistence and glassy behavior, as studied over the last decade, in systems such as perovskite manganites, ferroelectrics, and martensites to distil a common theme that includes the interplay of l…
Abstract We demonstrate that the imidazole‐based ligand 1 efficiently produces a coordination polymer gel by simple mixing with Co2+ ion. When the molar ratio of CoCl2 to ligand 1 was less < 1, a red sol was obtained, indicating the formation of an octahedral (Oh) complex species as occurs with Co(NO3)2. In contrast t…
We have carried out systematic studies on Goethite nanoparticles doped (dispersed) HPMC polymer films to quantify the changes in their structural properties, the conductivity, and IR absorbance of films. It is observed that the addition of nanoparticles has significant influence on changing structural parameters and h…
A series of magnetic fluorinated polybenzobisoxazole (6FPBO)/silica‐coated Fe 3 O 4 magnetic nanoparticles composites were synthesized through in‐situ polymerization. The structure and morphology of the obtained nanocomposites were characterized by X‐ray diffraction, transmission electron microscopy, and scanning elec…
Based on the characteristic of histograms for fiber length, a finite mixture model has been applied in this paper to characterize cotton fiber length probability distribution, which made it possible to describe the entire fiber length distribution with a parametric continuous function. With the analysis of previous re…
Silk fibroin scaffolds obtained via regeneration by Ajisawa's reagent (CaCl2/H2O/EtOH, mole ratio 1:8:2) and freeze‐drying followed by steam sterilization resulted unstable when incubated in physiological medium over 1‐month period since the oxygen diffusivity and mechanical resistance to compression significantly dec…
The N-protonations in the deutero, hemato, meso and protoporphyrin IX dimethyl esters (DME) were investigated by spectrophotometric titrations using HCl as the acid and methanol as the solvent. Two spectroscopically different protonated species were observed for each porphyrin DME in addition to the neutral form. Thes…
The conventional split Hopkinson torsional bar (SHTB) system consists of two bars, which can successfully produce the data for the construction of dynamic torsional shear stress and strain relationships. However, the system cannot provide reliable information on the progression of the deformed micro-structure during t…
Improvement of superhydrophobic surfaces durability is a critical key for potential commercial applications such as self‐cleaning and ice repellency. In this study, functionalization of silica nanoparticles by photoreactive benzophenone groups was made in order to covalently bond nanoparticles to polymer substrates to…
Gradient copolymers can exhibit physical properties that are different than their block polymer analogues. Property variations should depend upon differences in the molecular arrangement of individual comonomers in the polymer chain and in the gradient zone of each chain as well as the morphological arrangement of tho…
Organic–inorganic hybrid films were fabricated by reacting 3-glycidoxypropyltrimethoxysilane with 4,4′-diaminodiphenylether by hydrolysis and condensation reaction with acid catalysis. The chemical bonding between the organic and inorganic phases provides reinforcement to the films, and tetraethoxysilane was added in…
Interfacial MagnetoElectric coupling (MEC) at ferroelectric/ferromagnetic interfaces has recently emerged as a promising route to achieve electrical writing of magnetic information in spintronic devices. For the prototypical Fe/BaTiO3 (BTO) system, various MEC mechanisms have been theoretically predicted. Experimental…
ABSTRACT The dibenzyl derivative of poly(3,4‐propylenedioxythiophene) (PProDOT‐Bz2) thin film is deposited onto ITO‐coated glass substrate by electropolymerization technique. The electropolymerization of ProDOT‐Bz2 is carried out by a three‐electrode electrochemical cell. The cyclic voltammogram shows the redox proper…
Various nitrogenous bases, such as imidazoles, pyridines and amines were employed as axial ligands in epoxidation reaction of cyclooctene bytetra-n-butylammonium hydrogen monopersulfate (n- Bu 4 NHSO 5), in the presence of Mn ( III )-tetrakis(2,3-dimethoxyphenyl)porphyrin-acetate ( T (2,3- OMeP ) PorMnOAc ). T (2,3- O…
A detailed description of the distribution, interaction, and dynamics of molecules with biological activity dissolved in a hydrophobic bilayer, a simple model of a biological membrane, provides valuable information for a better understanding of drug functioning, which can be very useful in drug design. Here we present…
We study the scattering phase shift of Dirac fermions at graphene edge. We find that when a plane wave of a Dirac fermion is reflected at an edge of graphene, its reflection phase is shifted by the geometric phase resulting from the change of the pseudospin of the Dirac fermion in the reflection. The geometric phase i…
Abstract Green synthesis and characterisations of silver-polyvinyl alcohol nanocomposite films for possible environmental and biomedical applications such as wound dressing have been investigated. The synthesis was carried out in water, in an environmentally-friendly solvent using β-D-glucose as a reducing agent and i…
This work investigates jammed granular matter under conditions that produce heterogeneous mass distributions on a mesoscopic scale. We consider a system of identical disks that are confined to a narrow channel, open at one end and closed off at the other end. The disks are jammed by the local pressure in a gravitation…
A synthetic protocol for the construction of new meso-substituted pyrrolo[1,2-a]quinoxalinoporphyrins is described starting from 5-(4-amino-3-nitrophenyl)-10,15,20-triphenylporphyrin. The reaction of this porphyrin with 2,5-dimethoxytetrahydrofuran, followed by the reduction of the nitro group in the presence of NiCl2…