Materials Literature
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Abstract BACKGROUND: Mo's equation based on the Avrami equation and Ozawa equation has been successfully used in non‐isothermal crystallization kinetics by many researchers. However, in recent years we have found that plots of log ϕ–log t of Mo's equation are not straight lines, but there appears a turning point at ϕ…
The purpose of this study was to explore the effects of household fabric softeners on the thermal comfort of fabrics after repeated laundering cycles. Several textile properties can influence thermal comfort of a garment. This study focuses on two of these properties, air permeability and water vapor transmission. A 3…
Motivated by the intriguing properties of magnetic molecular wheels at field-induced level crossings, we investigate the spin-Peierls instability of antiferromagnetic rings in a field by exact diagonalizations of a microscopic spin model coupled to the lattice via a distortion-dependent Dzyaloshinskii-Moriya interacti…
A novel and convenient approach to chlorophins and bacteriophins has been developed through a degradation of nickel(II) 2,3,12,13-tetrabromo-5,10,15,20-tetraarylporphyrins by the anion of E-benzaldoxime. The UV-vis spectra of these chlorophins and bacteriophins are similar to those of metalated chlorin and bacteriochl…
We have studied the thermal behavior of orientationally disordered phase of caffeine molecular crystal using variable shape variable size Monte Carlo simulations in isothermal-isobaric ensemble. We have investigated the structure, especially the nature of orientational disorder of caffeine molecules as a function of t…
Sterically stabilized polyelectrolyte complexes with stoichiometric composition between oppositely charged synthetic polyelectrolytes carrying strong ionic groups and significantly different molecular weights have been prepared. Poly(sodium styrenesulfonate) (NaPSS) was used as polyanion and a range of brush copolymer…
Ordering phenomena on surfaces or in monolayers can be successfully studied by model systems as binary hard-disk mixtures, the influence of a substrate being modeled by an external potential. For the field-free case the thermodynamic stability of space-filling lattice structures for binary hard-disk mixtures is studie…
Abstract Nanokristalle mit zwei Gesichtern: Die Zugabe einer zweiten Silbernitrat‐Portion bei einer Polyol‐Synthese von Silbernanowürfeln führte durch oxidatives Ätzen und Anwachsen zu anisotrop gestutzten Oktaedern. Drei benachbarte Flächen der Nanowürfel wuchsen schneller als die übrigen drei, was in den nichtzentro…
It is shown here by ab initio calculations that embedded silicon fullerenes of the form $\text{Si}@{\text{Si}}_{28}{\text{H}}_{28}$, ${\text{Si}}^{1\ensuremath{-}}@{\text{Si}}_{28}{\text{H}}_{28}$, and ${\text{Si}}_{5}@{\text{Si}}_{24}{\text{H}}_{24}$ could be consistent with most of the known, experimental data conce…
We study mixtures of star polymers and linear chains in good solvent conditions. We consider the effect of the addition of small chains on the equilibrium structure as well as on the phase behavior of low- and intermediate-functionality star solutions. By using a recently introduced effective cross interaction between…
Porous silica particles of 3 microm diameter and 100 A nominal pore size were first activated for vinylic polymerization by functionalization with 3-methacryloyloxypropyl trimethoxysilane (MAPTMS) and thereafter dressed with zwitterionic grafts of the sulfoalkylbetaine type in the "grafting through" fashion by polymer…
The effect of the torsional potential on several thermodynamic and structural properties of a system of polyethylene chains has been analyzed. To this end, molecular dynamics simulations of a coarse-grained model, whose sites interact through a force field with bending, torsional, and nonbonded terms, have been consid…
Abstract Manufacturing biomedical flexible Poly (vinyl chloride) (PVC) products requires the nontoxic plasticizers and the biocompatibility. In this study, a series of methoxylated poly(ethylene glycol)‐poly(ε‐caprolactone) diblock copolymer (MPEG‐PCL) with variety molecule weight were synthesized by ring‐opening poly…
Abstract The individual binary polymer blends of phenolic/phenoxy, phenolic/poly(vinyl phenol) (PVPh), and phenoxy/PVPh have specific interaction through intermolecular hydrogen bonding of hydroxyl–hydroxyl group to form homogeneous miscible phase. In addition, the miscibility and hydrogen bonding behaviors of ternary…
Zn(5)Sb(4)In(2-delta) (delta = 0.15(3)) was synthesized in the form of millimeter-sized crystals from reaction mixtures containing excess zinc. The ternary intermetallic compound is temperature polymorphic, and at room temperature it crystallizes with a new structure type in the orthorhombic space group Pbcn, where a…
Abstract The present paper reports the successful development of a straightforward clay organo‐modification protocol named “Shear Induced Clay Organo‐modification” process, or SICO. To develop such a fast process, natural montmorillonite has been organo‐modified with cationic starch (surfactant) under shearing. Accord…
Series of alkaline earth aluminoborosilicate glasses were prepared by conventional melt quenching technique. Several studies including infrared spectra, density and dielectric properties of these glasses have been carried out. Infrared spectra indicated that with increasing boron oxide, more borate units were connecte…
Abstract Low‐density polyethylene (LDPE)/silicate nanocomposites were prepared by the melt compounding and solution blend methods using unmodified LDPE polymer and layered silicates with different aspect ratio. X‐ray diffraction (XRD) analysis performed on composites obtained by dispersing the organosilicates in molte…
Laying the groundwork: The interfacial self-assembly properties of an amyloid peptide were used to develop crystalline nanostructures at air-water interfaces, which were studied by both AFM microscopy and X-ray diffraction (see image). These structures generate regular arrays of functional groups and pave the way to c…
A novel, versatile functional mesoporous material with the structure of SBA-15 but a specific 3D net-linked morphology has been prepared by using a facile method. This material has been assessed for its ability to reduce the level of nitrosamines in tobacco smoke so that the actual effect of this material in the reduc…