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 The microwave (MW)‐assisted synthesis of one dimensional carbon systems is introduced as a promising approach to improve the speed and cost‐effectiveness of the fabrication process. Improved reaction conditions are generated by direct MW heating and synthesis under advanced reaction conditions. The influence…
A new type of nanocomposites consisting of solid 4A zeolites and gaseous fire extinguishing agent of 2-bromo-3,3,3-trifluoropropene (BTP) was fabricated in large scale, in which BTP anchored in the porous zeolites. Laboratory-scale fire extinguishment tests showed that the nanocomposites as additives can greatly impro…
Abstract A series of epoxy resin (EP) composites were prepared using ground pearl shell powders, which had been calcined at various temperatures. The EP composite containing ∼ 3% weight content of the calcined pearl shell powder had the highest impact strength and the presence of silane agent was found to be essential…
Abstract A numerical model is presented for the optimal vulcanization of 2D extruded polar rubber with microwaves and peroxides. Magnetron power and curing time are used as the input production parameters, and the output mechanical property selected for optimization is the average tensile strength of the item. A 2D th…
Abstract Injected polypropylene/talc composites were studied to evaluate the conditions leading to the formation of a mixed talc/polymer crystalline lamella percolating network and the influence of such a network on the nanocomposite mechanical properties. The talc was either conventional micrometer‐sized (conventiona…
Abstract This work deals with the synthesis of high‐impact polystyrene (HIPS) using a novel cyclic multifunctional initiator, the diethyl ketone triperoxide (DEKTP), analyzing its effect on the prepolymerization step and its influence over the HIPS final properties. DEKTP showed a low selectivity toward grafting react…
Formation of nanosized mixed semiconductor Pb x Cd 1 —x S in situ into PEO—polymer electrolyte matrix at room temperature is reported. The disperse phase was identified by X-ray diffraction analysis. Optical microscopy shows the increase in amorphicity with dispersal of semiconductor while scanning electron microscope…
We propose an experimental technique that allows us a straightforward and reliable fabrication of magnetic and electromechanical nanodevices for single particle detection and characterization. We demonstrate three different experimental methods for fabrication of nanoscale devices consisting of either single or multiw…
Electrical breakdowns of individual silicon nanochains, in which silicon nanoparticles are covered with and connected by oxide alternatively forming nanowires, are studied by in situ transmission electron microscopy using a microprobe system. Individual silicon nanochains can endure a current typically as large as 10(…
With the view to achieving a more perfect microvibration-free working environment for high technology equipment such as semiconductors and optical microscopes, the authors investigate the use of a 6-DOF microvibration hybrid control system to mitigate two types of vibration (ground motion and direct disturbance). This…
Abstract Porous poly(ethylene glycol) diacrylate (PEGDA) monoliths have been prepared by UV‐initiated polymerization of PEGDA oligomer ( M n = 700 g/mol). In the mean time, the addition of hydrophobic poly(propylene oxide) (PPO, M n = 725 g/mol) as porogen into an ethanol solution of PEGDA oligomer to form a homogenou…
Hysteresis motors are exciterless and brushless machines with outstanding characteristics such as constant torque and speed, robust structure, low and constant starting current and smooth operation. On the contrary, hysteresis machines have some usage limitations such as low power factor, efficiency and torque density…
Plasticizers are usually added to polymers to give them the desired flexibility and processability by changing the dynamical properties of the polymer chains. It is therefore important to give a quantitative description about how the dynamic behavior of a given polymer is modified by the incorporation of a second comp…
To examine the porous structure of ordered silica with cagelike pores, we measured successive adsorption of water at 283 K and nitrogen at 77 K on four kinds of SBA-16 and four kinds of KIT-5. For materials with smaller necks, we found the amount of nitrogen condensed inside the large cavities decreased rapidly with a…
The adsorption properties of six samples of carbons of which two are obtained from AYOUS (Triplochiton Scléroxylon), two from AKOM (Terminalia Superba) and two obtained commercially were studied from their adsorption isotherms of acetic acid at 30° and 45°C. This study has resulted in the determination of the two type…
Nanotubes wrapped up: In nanotube–DNA hybrid structures (see figure), defects on the sidewall of carbon nanotubes effects the dispersibility. DNA is helically wrapped around the nanotubes in an irregular pattern and structural defects on the sidewall of the nanotubes provide additional sites for binding with DNA.
Abstract Poly(butylene terephthalate) nanocomposites with organically modified montmorillonites have been prepared by in‐situ ring opening polymerization of PBT cyclic oligomers. High molecular weight polymers can be obtained by choosing the proper polymerization conditions and catalyst in very short polymerization ti…
Nanosized Zn and ZnO particles have attracted considerable interest for their various potential applications. Zn can act as both the fuel and a working catalyst in the Zn/ZnO thermochemical solar water splitting cycle for hydrogen generation, and ZnO is an important semiconductor. In this work, we combine two differen…
In this work, we examine the interaction between thin films composed of terminally anchored poly(N-isopropyl acrylamide) (PNIPAAm) immersed in water and test surfaces. Understanding this force of interaction can be important when using PNIPAAm surfaces in biotechnological applications such as biological cell cultures.…
Abstract The development of two methods using highly exothermic oxidation reactions to synthesize nanostructured oxide particles is described. The first method uses solution combustion to produce a high temperature front that moves through the sample and produces the nanoparticles. For example, Bi 2 O 3 nanoparticles…