Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract Phase morphology of melt‐mixed polypropylene (PP)/acrylonitrile‐butadiene‐styrene (ABS) blends was found to be blend ratio dependent, viz., matrix‐particle dispersed type of morphology which was observed up to 30 wt % of ABS level beyond which the morphology showed co‐continuous type. The domain size of 80/20…
Abstract We have synthesized and characterized a new family of low melting all‐aromatic ester‐based liquid crystal oligomers end‐capped with reactive phenylethynyl end groups. In a consecutive, high‐temperature step, the reactive end groups were thermally activated and polymerization was initiated. This reactive oligo…
Abstract Acicular titania nanoparticles with average dimensions of 15 × 60 nm 2 were produced by hydrothermal crystallization of TiOCl 2 . Titania particles were surface‐functionalized with octadecylsilane to obtain an organophilic surface. High‐density polyethylene (HDPE) nanocomposites were prepared by melt compound…
Abstract Catalysis of the ring‐opening reaction of L ‐lactide and ε‐caprolactone to form the corresponding biodegradable polyesters is frequently performed using organometallic compounds such as tin(II) 2‐ethylhexanoate, which operates by a living, coordination insertion mechanism. For biomedical applications, non‐tox…
The perfect blend: A new class of self-assembling cyclooligomers with mixed urea/amide backbone is described (see figure). A high level of hierarchical and directional control is achieved: depending on the level of backbone preorganization, columnar or tubular arrangements with either parallel or antiparallel growing…
Chitin is an insoluble component in the shells of several molluscan species. It is thought to play important roles, in biomineralization and shell structure. To date, however, reports are scarce and sometimes contradictory, and suffer from methodological problems. Only in a single cephalopod species has the chitin bee…
No legendary Prussian order! The distribution of vacancies in Prussian blue analogues is not random, and the spin density on the Cd(2+) ion varies depending on the number of paramagnetic ions in its surroundings. This conclusion follows from (113)Cd solid-state magic-angle spinning NMR studies of [Cd(3){Fe/Co(CN)(6)}(…
The effect of the kappa-carrageenan concentration on gel microstructure and self-diffusion of polyamideamine dendrimers has been determined by transmission electron microscopy (TEM), image analysis, and nuclear magnetic resonance (NMR) diffusometry. Different salt conditions of KCl, NaCl, and mixtures thereof allowed…
Abstract The rheological characterization and morphological analysis of nylon 1212 toughened with a maleated triblock copolymer styrene‐ b ‐(ethylene‐ co ‐butylene)‐ b ‐styrene (SEBS‐ g ‐MA) elastomer were carried out. We found that the critical shear strain of nylon 1212 was higher than that of virgin SEBS‐ g ‐MA and…
Abstract This research was focused on the mechanical properties of electrically conducting composites based on polyaniline (PAn)‐coated short glass fibers (SGFs) immersed in an isotactic polypropylene (iPP) matrix. In these composites, PAn was actually grafted onto the SGF surface, and so it was denoted PAn‐ g ‐SGF. T…
Abstract A synergistic effect of synthetic hydrotalcites as long term stabilizer with metal soaps (the mixture of calcium and zinc stearate) and metal acetylacetonates on dehydrochlorination of PVC has been studied. A proper balance between color stabilization and HCl scavenging capacity has been obtained. Hydrotalcit…
Two methods to predict the pressure drop threshold (Δ P threshold ) to initiate bubble nucleation in polymer foaming processes are developed. One method uses the modified nucleation theory developed in our previous work, while the other utilizes computer simulations to model the growth profiles of the first observable…
The redox behavior of an undoped nanodiamond (ND) film grown by chemical vapor deposition was investigated using cyclic voltammetry (CV) and scanning electrochemical microscopy (SECM) and redox mediators Fe(CN) 6 3−, Fe(CN) 6 4−, ferrocenemethanol (FcOH), and Ru(NH 3 ) 6 3+ . CV showed extremely sluggish kinetics for…
Simple exposure of single-crystal ZnO to 193 nm excimer laser radiation at room temperature results in unexpected coloration. The gray to nearly black colored material, seen principally in the irradiated laser spot, is superficial. We present unambiguous evidence that this coloration is due to high densities of metall…
Abstract This paper is dealing with the corrosion and growth behavior of M5® and recrystallized low tin Zircaloy-4 irradiated as stress-free tubes in conditions representative of grids and guide-tubes of PWR fuel assemblies. The low-tin Zircaloy-4 tubes have reached equivalent burn-ups up to 93 GWd/tU (corresponding t…
Carbon nanowalls (CNWs), two-dimensional carbon nanostructures comprising plane graphene layers standing vertically on a substrate, have attracted considerable attention for several applications, because of their ultrahigh aspect ratio and large surface area. We developed a formation method of platinum (Pt) nanopartic…
An original magnetic bistability and a thermochromic transition are observed in a new Cu(II) molecular chain. Thermal structural studies reveal changes in the Cu(II) coordination sphere, driven by a more pronounced Jahn-Teller effect at low temperature. These distortions provoke a gradual color change. The structural…
This paper reports a molecular-dynamics study on the clustering of ${\text{Eu}}^{3+}$ ions incorporated in ${\text{SiO}}_{2}$ glass. Classical molecular-dynamics experiments were carried out on $x{\text{Eu}}_{2}{\text{O}}_{3}\text{\ensuremath{-}}(100\ensuremath{-}x){\text{SiO}}_{2}$ ($x=0$, 1, 2, 3, 4, and $5\text{ }\…
Abstract Ring‐opening polymerization (ROP) of glycolide was studied in melt conditions and in the presence of two different initiators: 1‐dodecanol and 1,4‐butanediol and tin(II) 2‐ethylhexanoate as catalyst. Its subsequent polymerization provided poly(glycolic acid) with controlled molar masses ranging from 2000 to 4…
The aim of this study was to evaluate the osteogenic potential and the vascularization of embroidered, tissue engineered, and cell-seeded 3D poly(3)hydroxybutyrate (PHB) scaffolds in nude rats. Collagen I (coll I)- and collagen I/chondroitin sulfate (coll I/CS)-coated PHB scaffolds were seeded with human mesenchymal s…