Materials Literature
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Abstract Near infrared spectroscopy (NIRS) may constitute a powerful tool for in‐line monitoring of morphological properties of PVC particles in suspension polymerizations. It is shown that dynamic trajectories of morphological properties, as predicted with NIR‐based calibration models, change smoothly along the batch…
Single crystals of HfAs(1.7)Se(0.2) are grown by chemical transport reaction and their chemical composition characterized in detail by various analytical methods. Chemical analyses and crystal structure investigations by single-crystal X-ray diffraction as well as powder diffraction with synchrotron radiation reveal a…
The ideal γ-Al 2 O 3 structure is elucidated by solving the defect reaction for alumina-rich magnesium aluminate spinel. The selective reduction of nickel from Ni x Mg 1− x Al 2 O 4 spinel through reaction with hydrogen enables the in situ analysis of the defect reaction as it progresses. The reaction is described by…
Abstract Nano‐structured anhydrous ruthenium oxide (RuO 2 ) thin films were prepared using an electrostatic spray deposition (ESD) technique followed by electrochemical lithiation and delithiation. During the electrochemical lithiation process, RuO 2 decomposed to nano‐structured metallic ruthenium Ru with the concomi…
Abstract Five kinds of polyepichlorohydrin (PECH) of different molecular weights were synthesized and characterized by gel permeation chromatography (GPC). Mechanical blending was used to mix PECH and poly(vinyl chloride) (PVC) together. The blends of different PVC/PECH ratios were characterized by thermogravimetric a…
Structural changes of silica in polydimethylsiloxane rubber induced by external forces were studied by means of small-angle X-ray scattering experiments. The silica fraction varies from 9 up to 23 vol% and the elongation ratio from 1 to 3. Within the q-range of 0.02 nm(-1)<q<1 nm(-1) the primary particles and the clus…
A series of heterobimetallic d 10 −d 8 complexes, [Au I M′(R 1 ) 2 (R 2 ) 2 ] (M′ = Pt II, Au III; R 1 = CN −, C≡CH −; R 2 = PH 2 CH 2 PH 2, CH 2 PH 2 CH 2 − ), were explored using ab initio methods and time-dependent density functional theory (TD-DFT). In the ground states, d 10 −d 8 distances were calculated at 2.88…
This chapter contains sections titled: Introduction Sapphire structure Sapphire crystal growth Corundum crystal defects Applications Brief crystal-growth technique characterization Conclusion References Appendix: sapphire physical properties
Degradable polyacrylamide (PAAm) was prepared by incorporating temperature-sensitive azo groups into the polymer backbone. Ceric ions (Ce(IV)) and 2,2′-azobis[2-methyl- N -(2-hydroxyethyl)propionamide] were used as a redox couple to initiate the polymerization of acrylamide. The presence of azo groups in the backbone…
Abstract An acidic Cs salt of H4SiW12O40 (Cs3HSiW12O40), which was prepared by titrating an aqueous solution of H4SiW12O40 with an aqueous solution of Cs2CO3, possessed only micropores and exhibited size-selective catalysis for acid-catalyzed reactions in liquid phase.
Abstract BACKGROUND: Owing to difficulties in catalyst recovery from slurries the deposition of a catalyst on suitable supports has been investigated extensively in recent years. The support material and the method of coating influence the activity. Photocatalytic decolorization of methyl orange (MO) and Rem Red F3B (…
Abstract The viscosity, loop tack, and shear strength of silica‐filled epoxidized natural rubber (ENR 25 and ENR 50 grade) adhesive were investigated using coumarone‐indene as the tackifying resin. Silica loading was varied from 10–50 parts per hundred parts of rubber (phr), whereas the coumarone‐indene concentration…
A numerical study is performed on the thermal and electrochemical characteristics of a tubular solid oxide fuel cell (SOFC) employing the steam reforming of biogas in each individual cell unit but indirectly from the anode. The numerical model used in this study takes account of momentum, heat, and mass transfer in an…
Amorphous metastable alloy of nominal composition ${({\text{Fe}}_{0.5}{\text{Cu}}_{0.5})}_{87}{\text{Zr}}_{13}$ has been synthesized by high-energy ball milling. The alloy exhibit a ferromagnetic behavior with a Curie Temperature of ${T}_{\text{C}}=255\text{ }\text{K}$, as determined from low-field measurements wherea…
Abstract Azlons are increasingly concerned for their excellent performance properties and biodegradation. A kind of novel azlon, zein/viscose textibe fibers, were fabricated by wet‐spinning of zein and cellulose sulfonate blended solution. Some parameters that determine the fabrication process were optimized. The stru…
Abstract Organic nanoparticles as heterogeneous nucleators have a great effect on the crystallization of polymer matrices in nanocomposite systems, and the effect will be enhanced under shear flow. A home‐made dynamic‐packing injection molding (DPIM) device was developed to explore the effect of organic clay on the sh…
Abstract Methoxypoly(ethylene glycol)‐grafted poly(β‐amino ester) was synthesized for the fabrication of pH‐sensitive micelles, and these micelles were modified with deoxycholic acid to facilitate the hydrophobic interaction between the micellar core and paclitaxel. The micelle properties were studied by dynamic light…
The feasibility of edge-functionalization of graphite was tested via the model reaction between pyrene and 4-(2,4,6-trimethylphenyloxy)benzamide (TMPBA) in poly(phosphoric acid) (PPA)/phosphorous pentoxide (P(2)O(5)) medium. The functionalization was confirmed by various characterization techniques. On the basis of th…
Abstract Styrene–maleic anhydride copolymer (SMA) with higher MA content (21.8 wt %) than reported SMA (mostly 8 wt %) was used as a compatibilizer for poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO)/polyamide 6 (PA6) blends by in situ formed PA‐ g ‐SMA during melt processing. The tensile strength and flexural strength o…
Abstract The adsorption of 2‐amino‐5‐cyanopyridine (2‐ACP) was investigated in solution at different pH values by i n situ surface‐enhanced Raman scattering (SERS) spectroscopy combined with the electrochemical method. The assignments of the main bands were first performed on the basis of the spectral features of simi…