Yong Wang、Qiang Fu、Qijun Li 等 6 位作者2002-08-07Journal of Polymer Science Part B Polymer Physics
Abstract For a more complete understanding of the toughening mechanism of polypropylene (PP)/ethylene‐propylene‐diene rubber (EPDM) blends, dynamic packing injection molding was used to control the phase morphology and rubber particle orientation in the matrix. The relative impact strength of the blends increased at l…
Polymer crystallization and propertiesComposite Material MechanicsPolymer Nanocomposites and Properties
Koh‐hei Nitta、Takashi Ishiburo2002-08-07Journal of Polymer Science Part B Polymer Physics
Abstract The influence of the elongation rate and temperature on the ultimate tensile properties of melt‐crystallized linear polyethylene solids was investigated, with a double‐edge‐notched specimen to avoid necking, in which uniform deformation could be assumed throughout the experiment. The data on ultimate properti…
Polymer Nanocomposites and PropertiesMechanical Behavior of CompositesPolymer crystallization and properties
Sean R. Agnew、Donald W. Brown、Sven C. Vogel 等 4 位作者2002-08-07Materials science forum
Measurements of internal strain development during in-situ deformation of a textured magnesium alloy plate represent the first direct observations of intergranular (type II) strains, which allow for definitive statements about the magnitude of stresses within (i) parent grains when mechanical twins are beginning to fo…
Metal Forming Simulation TechniquesMagnesium Alloys: Properties and ApplicationsMicrostructure and mechanical properties
Volodymyr Mazorchuk2002-08-07Communications in Algebra
We describe all endomorphisms of the (finite) Brauer semigroup, its partial analogue and the semigroup of all partitions of a -element set.
Supramolecular Self-Assembly in Materials
Guilford Jones、Valentine I. Vullev2002-08-07The Journal of Physical Chemistry A
Systematic investigation of the stability of mono-, bis-, and tris-terbium(III) complexes with dipicolinic acid is reported. The formation constants were extracted from emission titration data. For this purpose, a mathematical formalism for two complexation models was developed. Comparative studies were conducted by v…
Analytical chemistry methods developmentLanthanide and Transition Metal ComplexesRadioactive element chemistry and processing
Venkateswarlu Bhamidi、Sasidhar Varanasi、Constance A. Schall2002-08-07Crystal Growth & Design
Nucleation kinetics of tetragonal hen egg-white lysozyme obtained by the method of initial rates are reported. Sodium chloride (NaCl), ranging in concentration from 2% (w/v) to 7% (w/v), was used as the precipitant. Data are modeled using an empirical kinetic expression based on classical nucleation theory. The expres…
Enzyme Structure and FunctionCrystallization and Solubility Studiesnanoparticles nucleation surface interactions
Sanghamitra Mukhopadhyay、Preeti Joshi、Saswati Datta 等 5 位作者2002-08-07Journal of Physics D Applied Physics
Cellulose-based filter paper was plasma treated for hydrophobicity and the permeation of the coating investigated. A five-layer stack of filter paper was the model porous medium and perfluoromethylcyclohexane (PFMCH) was the model monomer used in this study. Water-drop-absorption time (time needed for certain size dro…
Plasma Diagnostics and ApplicationsSurface Modification and SuperhydrophobicityPlasma Applications and Diagnostics
Monoj Pramanik、Suneel Kumar Srivastava、B. K. Samantaray 等 4 位作者2002-08-07Journal of Polymer Science Part B Polymer Physics
Abstract We synthesized organosoluble, thermoplastic elastomer/clay nanocomposites by making a jelly like solution of ethylene vinyl acetate containing 28% vinyl acetate (EVA‐28) and blending it with organomodified montmorillonite. Sodium montmorillonite (Na + ‐MMT) was made organophilic by the intercalation of dodecy…
Polymer composites and self-healingPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Jiann-Min Chang、Ashok K. Batra、Ravindra B. Lal2002-08-07Crystal Growth & Design
Modified triglycine sulfate (TGS) single crystals have been grown from the aqueous solution by doping with urea, yttrium sulfate, l -serine + cobalt sulfate, and l -alanine + urea in the ferroelectric phase using a temperature lowering technique. The effects of these different dopants on the growth, dielectric, pyroel…
Nonlinear Optical Materials ResearchCrystallization and Solubility StudiesAcoustic Wave Resonator Technologies
Waldemar Lazik、Th. Heinze、Katy Pfeiffer 等 5 位作者2002-08-07Journal of Applied Polymer Science
Abstract For the first time, carboxymethyl starch (CMS) samples with a very high degree of substitution (DS CM = 2.1) were synthesized by multistep carboxymethylation under heterogeneous reaction conditions in methanol/water with sodium hydroxide and monochloroacetic acid as an etherifying agent. The stepwise increase…
Nanocomposite Films for Food PackagingFood composition and propertiesbiodegradable polymer synthesis and properties
Bailin Chen、John P. Selegue2002-08-07Analytical Chemistry
Oxidatively shortened single-walled and multiwalled carbon nanotubes were characterized by using flow field-flow fractionation (FIFFF) under normal and steric modes, respectively. Narrow size fractions were collected from FlFFF separations. The carbon nanotubes in each fraction were further characterized by using scan…
Field-Flow Fractionation TechniquesNanotechnology research and applicationsCarbon Nanotubes in Composites
Lei Cao、Hongzheng Chen、Mang Wang 等 6 位作者2002-08-07The Journal of Physical Chemistry B
Carbon nanotubes (CNTs) bonded to dodecylamine groups were obtained by chemical modification. The modified CNTs showed improved solubility in organic solvents and miscibility with polymer matrix. The photoconductivity of oxotitanium phthalocyanine (TiOPc) doped with modified CNTs was investigated by the xerographic ph…
Organic Electronics and PhotovoltaicsCarbon Nanotubes in CompositesConducting polymers and applications
Raquel Garde、Françoise Villain、Michel Verdaguer2002-08-07Journal of the American Chemical Society
A new synthetic procedure to obtain vanadium-chromium Prussian blue analogues is presented, using controlled amounts of V(III) in solution during the synthesis. The vanadium and chromium oxidation states and the chemical environment of the metal ions in the solids are characterized by infrared and X-ray absorption spe…
Magnetism in coordination complexesMetal complexes synthesis and propertiesLanthanide and Transition Metal Complexes
Cheng Wang、Xianhui Bu、Nanfeng Zheng 等 4 位作者2002-08-07Journal of the American Chemical Society
In addition to having size-dependent properties, nanoclusters also behave like large pseudo-atoms and serve as building blocks for the construction of superlattices with properties that differ from either individual clusters or the bulk. While colloidal nanoparticles usually self-assemble into close-packed lattices, s…
Crystal Structures and PropertiesQuantum Dots Synthesis And PropertiesNanocluster Synthesis and Applications
H. L. Suo、P. Lezza、D. Uglietti 等 6 位作者2002-08-07arXiv
Mono- and multifilamentary MgB2/Fe tapes and wires with high transport critical current densities have been prepared using the powder-in-tube (PIT) process. The fabrication details are described. The effect of powder grain sizes and recrystallization temperature on jc has been investigated. At 25K and 1 T, jc values c…
SuperconductivityMaterials Science
A. D. Kiselev2002-08-07arXiv
We consider the effect of photoinduced optical anisotropy (POA) in azopolymers. Using a unified approach to the kinetics of photo-reorientation we discuss the assumptions underlying the known theoretical models of POA and formulate a tractable phenomenological model in terms of angular redistribution probabilities and…
Materials ScienceSoft Condensed Matter
Xuefei Huang、Naoko Fujioka、Gennaro Pescitelli 等 7 位作者2002-08-07Journal of the American Chemical Society
A general chiroptical protocol for determination of absolute configuration of secondary amines including acyclic and cyclic aliphatic amines, aromatic amines, amino acids, and amino alcohols is described. The chiral substrate is linked to the achiral carrier moiety (3-N-Boc-amino-propyl-N-Boc-amino)acetic acid 1 (BocH…
Porphyrin and Phthalocyanine ChemistryPhotosynthetic Processes and MechanismsMolecular spectroscopy and chirality
Jeong Won Kang、Ho Jung Hwang2002-08-07arXiv
We have performed atomistic simulations for helical multi-shell (HMS) Cu nanowires and nanotubes. Our investigation on HMS Cu nanowires and nanotubes has revealed some physical properties that were not dealt in previous works that considered metal nanowires. As the diameter of HMS nanowires increased, their cohesive e…
Materials Science
V. Fiorentini、G. Gulleri2002-08-07arXiv
Parameters determining the performance of the crystalline oxides zirconia (ZrO_2) and hafnia (HfO_2) as gate insulators in nanometric Si electronics are estimated via ab initio calculations of the energetics, dielectric properties, and band alignment of bulk and thin-film oxides on Si (001). With their large dielectri…
Materials Science
V. Timoshevskii、D. Connétable、X. Blase2002-08-07arXiv
We present an ab-initio calculation of the electronic affinity of the hypothetical C-46 clathrate by studying its bare and hydrogenated (100) surfaces. We show that such a system shares with the diamond phase a small electronic affinity. Further, contrary to the diamond phase, the possibility of doping endohedrally th…
Materials Science