H. H. Cho、K. H. Kim、Young Ah Kang 等 5 位作者2000-01-01Journal of Applied Polymer Science
The high-speed melt spinning of sheath/core type bicomponent fibers was performed and the change of fiber structure with increasing take-up velocity was investigated. Two kinds of polyethylene, high density and linear low density (HDPE, LLDPE) with melt flow rates (MFR) of 11 and 50, [HDPE(11), LLDPE(50)], and poly(et…
Natural Fiber Reinforced CompositesTextile materials and evaluationsFiber-reinforced polymer composites
Po‐Da Hong、Hsing‐Tsai Huang、Che‐Min Chou2000-01-01Polymer International
In this work, the solvent effect on the miscibility between poly(vinyl chloride) (PVC) and poly(methyl methacrylate) (PMMA) in ternary polymer solutions was examined by the viscometric method. In these systems, we could understand that the used solvents, tetrahydrofuran (THF) or N,N-dimethylformamide (DMF), mainly aff…
Polymer crystallization and propertiesRheology and Fluid Dynamics StudiesPolymer Science and PVC
T. Fett、D. Münz2000-01-01Journal of Testing and Evaluation
Abstract Knowledge of the Young's moduli is necessary for piezoelectric ceramics in order to separate the total deformation into an elastic and a plastic contribution. The methods for the determination of the Young's moduli, well known from conventional ceramics, are much more complicated due to the special electrical…
Ferroelectric and Piezoelectric MaterialsUltrasonics and Acoustic Wave PropagationAcoustic Wave Resonator Technologies
Yves Wyser、Y. Leterrier、J.-A. E. M�nson2000-01-01Journal of Applied Polymer Science
Extending the useful life of materials through recycling has proven to be an efficient means of reducing natural resource use and limiting the production of waste. In the case of polymer-based materials, in general, and of packaging materials, in particular, material recovery is complicated by the presence of incompat…
Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesRecycling and Waste Management Techniques
Julia Y. Chan、Susan M. Kauzlarich、P. Klavins 等 6 位作者2000-01-01Physical review. B, Condensed matter
The synthesis, crystal structure, magnetization, and resistivity of Gd-doped ${\mathrm{Eu}}_{14}{\mathrm{MnSb}}_{11}{,\mathrm{}\mathrm{Eu}}_{13.97}{\mathrm{Gd}}_{0.03}{\mathrm{MnSb}}_{11},$ are reported and compared to ${\mathrm{Eu}}_{14}{\mathrm{MnSb}}_{11}$ and ${\mathrm{Eu}}_{14}{\mathrm{MnBi}}_{11}.$ All three com…
Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics
Y. Abraham、N. A. W. Holzwarth、R. T. Williams2000-01-01OpenAlex
In previous work, we studied the electronic structure of several molybdate and tungstate crystals having the scheelite structure. The wolframite structure is another common form for molybdate and tungstate materials. In this paper, we compare two chemically similar materials that naturally form in the scheelite and wo…
Luminescence Properties of Advanced MaterialsGas Sensing Nanomaterials and SensorsSolid-state spectroscopy and crystallography
Vipin Kumar、Richard P. Juntunen、Chris C. Barlow2000-01-01Cellular Polymers
In this paper, processing conditions for producing high relative density microcellular CPET foams using CO 2 as a blowing agent are described. Starting with solid CPET, foams with relative densities between 0.5 to 1.0 were produced. Results of instrumented impact tests conducted at various temperatures ranging from ro…
Carbon dioxide utilization in catalysisPolymer Foaming and Composites
Dongdong Jia、Jing Zhu、Boqun Wu2000-01-01Journal of The Electrochemical Society
In this work, and samples are prepared by solid chemical reaction. Excitation and emission spectra are investigated. The emission band is shifted to the red from 655 nm for to 670 nm for . The absorption bands of are resolved in the excitation spectrum, peaking at 280, 365, 460, and 570 nm. In contrast, the excitation…
Luminescence Properties of Advanced MaterialsCrystal Structures and PropertiesRadioactive element chemistry and processing
Seshadri Ramkumar、G. A. V. Leaf、S.C. Harlock2000-01-01Journal of the Textile Institute
A new frictional constant is suggested to characterize the surface mechanical properties of 1×1 rib-knitted cotton fabrics. This study examines the influence of structural variables on the frictional properties of knitted cotton fabrics. The results indicate that both the loop length and the yarn linear density influe…
Mechanical Behavior of CompositesTextile materials and evaluationsStructural Analysis and Optimization
Leen van Rij、Louis Winnubst、Jun Le 等 4 位作者2000-01-01Journal of Materials Chemistry
The wet chemical synthesis of CaZr0.9In0.1O3 − α powders via a peroxo-oxalate complexation method has been studied in detail using different techniques, i.e. TG-DTA, XRD, FT-IR, BET, SEM, EDX, and non-isothermal densification. Using these techniques, the different reaction steps in the calcination process have been cl…
Advancements in Solid Oxide Fuel CellsNuclear materials and radiation effects
Marion Frégonèse、C. Regnard、Laure Rouillon 等 6 位作者2000-01-01OpenAlex
The impact of irradiation damage accumulated in fuel claddings on their mechanical behavior and their susceptibility to iodine-induced stress corrosion cracking (I-SCC) was studied in irradiated zirconium and standard Zircaloy-4 sheets subjected to interrupted tension tests in methanol/iodine solutions and in an inert…
Hydrogen embrittlement and corrosion behaviors in metalsNuclear Materials and PropertiesNon-Destructive Testing Techniques
Jolanta Natalia Latosińska、Jacek Koput2000-01-01Physical Chemistry Chemical Physics
The present study involves nitrogen NMR-NQR measurements and semiempirical as well as ab initio calculations at the different levels in three 2-nitro-5-methylimidazole derivatives. The NMR-NQR data were compared with the results of the quantum chemical calculations with the geometry optimization by seven semiempirical…
Advanced NMR Techniques and ApplicationsSolid-state spectroscopy and crystallographyElectron Spin Resonance Studies
Ning Kang、Yizhuang Xu、Jie Wu 等 6 位作者2000-01-01Physical Chemistry Chemical Physics
The fine structure of the methylene rocking bands obtained by high resolution and cryogenic FTIR spectroscopy was utilized to characterize the crystalline behavior of polyethylene (PE) segments in an ethylene–acrylic acid copolymers. The hydrogen bonds among the carboxyl groups play a cross-linking role and prevent th…
Polymer crystallization and propertiesMaterial Dynamics and PropertiesPolymer Nanocomposites and Properties
Makoto Kawase、Yoshihiro Mugikura、Takao Watanabe2000-01-01Journal of The Electrochemical Society
To evaluate the effects of on the performance of molten carbonate fuel cells, bench‐scale cell tests were performed and the meniscus heights of the electrolyte on Ni were measured with fuel gases containing various amounts of . In bench‐scale cell tests, in the fuel gas had a large effect on cell voltage in the early…
Electrocatalysts for Energy ConversionAdvancements in Solid Oxide Fuel CellsFuel Cells and Related Materials
Hirokazu Shimooka、Shigemi Kohiki、Takeshi Kobayashi 等 4 位作者2000-01-01Journal of Materials Chemistry
Translucent barium titanate (BaTiO3) ceramics with a relative sintered density of 85% have been successfully produced via a powderless sol–gel method, in which transparent, partially-crystallized BaTiO3 monolithic xerogels (dried gels) were prepared and submitted to sintering at 1100 °C in an oxygen atmosphere. The tr…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsMicrowave Dielectric Ceramics Synthesis
Eiichi Wakai、A. Hishinuma、Kouji Usami 等 6 位作者2000-01-01Materials Transactions JIM
The tensile and impact behavior and microstructures of neutron-irradiated Fe–9Cr alloys with purity levels of 99.99 and 99.8 mass% have been examined. The neutron irradiation was mainly performed at about 255°C or 290°C to 0.3 dpa in the JRR-3M (Modified Japan Research Reactor-3). The increment of yield strengths in t…
Microstructure and Mechanical Properties of SteelsFusion materials and technologiesNuclear Materials and Properties
Youngkyoo Kim、Jihwan Keum、Jae-Gyoung Lee 等 5 位作者2000-01-01Advanced Materials for Optics and Electronics
We have attempted to investigate the non-linear behaviour in the characteristics of organic electroluminescent devices (OELDs) fabricated with polyimide and an organometallic complex as a hole transport layer (HTL) and an emission layer, respectively. The thickness of the polyimide HTL and the kind of metal cathode we…
Organic Light-Emitting Diodes ResearchConducting polymers and applicationsSynthesis and properties of polymers
Yu Takano、Taku Onishi、Yasutaka Kitagawa 等 6 位作者2000-01-01International Journal of Quantum Chemistry
Density functional and post–Hartree–Fock calculations have been carried out for the metal–π conjugated complexes involving pyrimidine as an m-phenylene-type unit. Total energies for the lowest and highest spin states are used for investigation of d–π–d magnetic interactions via pyrimidine of Mn(II)2–pyrimidine, Cu(II)…
Metal complexes synthesis and propertiesMagnetism in coordination complexesOrganic and Molecular Conductors Research
M.A. Quraishi、Izharul Haq Farooqi、P.A. Saini2000-01-01British Corrosion Journal
AbstractCorrosion inhibition efficiencies of triazole derivatives for 70–30 brass in water containing 3%NaCl have been evaluated by means of weight loss, electrochemical polarisation, and impedance techniques. The triazole derivatives, namely aminomethyl mercaptotriazole (AMMT), aminoethyl mercaptotriazole (AEMT), and…
Anodic Oxide Films and NanostructuresNanoporous metals and alloysMetallurgy and Material Science
Jong Hwa Jung、Seiji Shinkai2000-01-01Journal of the Chemical Society Perkin Transactions 2
Four ‘gemini’-type cholesterol-based gelators 1nnn were synthesized. They acted as versatile gelators of organic fluids. The xerogels showed a lamellar structure for 1222 and 1444 and a fiber structure for 133 and 155 according to whether the number of methylene units between the two nitrogens was even or odd. The dif…
Mesoporous Materials and CatalysisPorphyrin and Phthalocyanine ChemistrySupramolecular Self-Assembly in Materials