Miscibility, Thermal, Morphological and Mechanical Behaviour of Polycarbonate/poly(trimethylene terephthalate)blends with Poly(butylene adipate-co-terephthalate) as a Compatibilizer
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Controllable Morphology and Structure of MoO3 Hexagonal Poles and Nanobelts
Various morphology and structure of MoO3 were prepared via hydrothermal reaction method. The experimental results show that Na+ and H+ play a decisive role in the formation of h-MoO3 and a-MoO3. As mol ratio of Na2MoO4 : H2SO4 = 1 : 2 and 1, a-MoO3 nanobelts and h-MoO3 hexagonal poles were obtained, respectively. Scan…
Mechanical Properties of Modified Natural Fiber/Poly(butylene succinate) Composites
More than one billion tons of banana leaves are discarded per year. Banana fibers can be made from banana leaves. In the present study, banana fibers without being processed (BF), banana fibers with an alkali treatment (BF-A), banana fibers treated in an alkali aqueous solution with tension (BF-AT), and poly(butylene…
A SYSTEM OF NONLINEAR EQUATIONS WITH SINGULAR JACOBIAN
L-Alanine acetate is one of the NLO materials which find applications in the field of optoelectronics. This material possesses attractive properties such as high damage threshold,wide transparent range,less deliquescence and high nonlinear coefficient which are the requirements for frequency doubling. This material ha…
Crystal structure and ferroelectric properties of Bi0.5Na0.5TiO3-modified Bi0.5+0.5xNa0.5−0.5xTi1−xMn0.75xMo0.25xO3 solid solutions
In this study, Bi0.5+0.5xNa0.5−0.5xTi1−xMn0.75xMo0.25xO3 (BNTMM) ceramics were synthesized and the influence on their crystal structure and ferroelectric properties of the Bi, Mn and Mo substitutions for Na and Ti was investigated. Based on variations in the lattice parameters, the solubility limit was determined to b…
Development of clothing micro climate monitoring system for human physiological indexes
This study is devoted to how to monitor human physiological indexes by observing the change of related indexes of the clothing micro climate monitoring system.Having analyzed the clothing which makes a person feel comfortable and enjoy good healthy as well as related physiological indexes,we investigated the route and…
Effect of heat input on microstructure and mechanical properties of ultra-thin 443 ferritic stainless steel
Tungsten inert gas (TIG) welding, pulsed tungsten inert gas (P-TIG) welding and pulsed laser beam welding (P-LBW) of ultrathin 443 ferritic stainless steel sheets were conduted to investigate the problems of coarsened grain and brittleness in the weld. The effects of different welding processes on the microstructure…
On the Interaction between PVP and Europium Benzenesulfonate
The interaction between polyvinylpyrrolidone(abbreviated as PVP) and europium benzenesulfonate was investigated by using temperature-dependent FTIR and fluorescence spectra.Europium compounds show strong coordination ability with amide groups of PVP.In order to remove the undesired H—O—H scissoring bands from the adso…
Reaction Characteristics of Phosphogypsum Under Carbon Monoxide Atmosphere
The reaction characteristics of phosphogypsum and pure CaSO4were investigated at different CO concentrations and reaction temperatures via thermogravimetric analysis and thermodynamic calculation. The results show that the reaction activity of phosphogypsum is much higher than that of pure CaSO4due to the catalysis of…
Pore Structure of Cement Pastes Modified by Non-ionic Cellulose Ethers
The effect of non-ionic cellulose ethers(NCE) with different molecular structure on pore structure of cement pastes was investigated by apparent density test,visual observation,optical microscope and SEM.The results indicate that the addition of NCE results in higher porosity in cement pastes.The porosity in cement pa…
Novel complete condensing spinning system with strip groove structure
To develop new ring spinning technique and produce high quality ring spun yarns,novel hollow roller compact spinning system with strip groove structure-complete condensing spinning was presentel and the structure composition of the spinning system and features of spun yarns were introduced.Spinning experiments were ca…
Observation and Solidification Simulation of Microsegregation in Ni-base Alloy
Solidification structure of an alloy of grade Hastelloy G-2 was investigated by differential scanning calorimetry and electron probe microanalyzer. Small amount of Cr and Mo-enriched phase was observed at the final solidification region. Furthermore, the numerical simulation of solidification behavior of this alloy wa…
Synthesis and Characterization of Tetraaniline-Polyethylene Glycol Block and Star-shaped Copolymers
以氨基封端的苯胺四聚体为基础, 通过将端氨基取代为不同数量的羧基, 得到了一系列连接臂数不同的苯胺四聚体-聚乙二醇共聚物, 对反应历程中的各阶段产物进行了结构表征, 并对苯胺四聚体及最终产物进行了电化学性能测试. 结构表征证明反应按照设计路线成功进行并得到了理想的产物; 循环伏安特性曲线表明, 共聚物基本保留了苯胺四聚体的电化学性能, 可以发生从还原态到中间态再到氧化态的转变.
Theoretical Study of Structures of Alkaline-Earth Metal (М= Be, Mg) Complexes of Porphyrin (МР), Porphyrazine (МРz) and Phthalocyanine (МРc)
(), (z) (c) (=Be, Mg)
Morphological and Electrochemical Properties of 3,4-Substitued Polythiophene Films Prepared by Electrochemical Polymerization
We have synthesized 3,4-ethylendioxythiophene (EDOT) monomer analogs such as 3,4-ethyleneoxythiathiophene (EOTT), 3,4-ethylenedithiathiophene (EDTT) and 3,4-methylethylenedithiathiophene (MEDTT), and investigated morphological and electrochemical properties of the corresponding polymer films prepared by their electroc…
Automated realization of the gallium melting and triple points
In order to improve the automation and convenience of the process involved in realizing the gallium fixed points, an automated apparatus, based on thermoelectric and heat pipe technologies, was designed and developed. This paper describes the apparatus design and procedures for freezing gallium mantles and realizing g…
Experimental Investigations of Pressure Wave Propagation by the Inception of a Laser-Induced Bubble in Bubbly Flows
The pressure wave propagation caused by the breakdown of a focused laser beam in a bubbly channel flow is investigated experimentally. Measurements were conducted in the downstream of a convergent-divergent channel with rectangular cross-section; microbubbles are generated downstream the constriction of the channel. O…
Structural and photoluminescence properties of Zn[sub 2]SiO[sub 4]:Tb[sup 3+] & Zn[sub 2]SiO[sub 4]:Tb[sup 3+]+Li[sup +] phosphors
Here, we report on the synthesis and analysis of Zn2SiO4:Tb3+ & Zn2SiO4:Tb3++Li+ novel powder phosphors by using a sol-gel technique. Thermal and structural properties of the host phosphor has been carried out from the measurement of its TG-DTA, XRD and FTIR profiles. Excitation and emission spectra of these green lum…
Synthesis and Crystal Structure of Novel Zinc Porphyrin ZnTCPP(H2O)•MeOH [TCPP = meso-tetra(4-carboxyphenyl)porphyrin]
In order to study new porphyrin complexes, a novel zinc porphyrin ZnTCPP(H2O)•MeOH [TCPP = meso-tetra(4-carboxyphenyl)porphyrin; MeOH = methanol] has been designed, prepared and characterized by a single-crystal X-ray diffraction method.The title complex crystallizes in the orthorhombic system with a Cmca space group…
Bifurcation Analysis of a Two-dimensional Binary Mixture of Hard Needles
In earlier rumor spreading models of the real world complex networks, nodes contact all of their neighbors at each time step.In more realistic scenario, a node may contact only some of its neighbors to spread the rumor.The rumor spreading rate may also depend on the degree of the spreader and ignorant nodes.We have gi…