Sujata Mukhopadhyay、S. K. De1991-05-20Journal of Applied Polymer Science
Abstract Mill mixed blend of epoxidized natural rubber and chlorosulfonated polyethylene forms a self‐vulcanizable rubber blend during molding at high temperatures in absence of any vulcanizing agent, which is confirmed by FTIR studies. The extent of vulcanization reaction not only depends upon time and temperature of…
Polymer Nanocomposites and PropertiesPolymer composites and self-healingSynthesis and properties of polymers
S. Saha、Prabir Ray、S. N. Pandey 等 4 位作者1991-05-20Journal of Applied Polymer Science
Abstract IR and X‐ray diffraction studies have been carried out on raw and chemically treated pineapple leaf fiber (PALF). The degree of crystallinity, as found by X‐ray diffraction and the crystallinity index as found by infrared methods, decreases on treatment with NaOH and NaClO 2 solutions. The decrease of crystal…
Advanced Cellulose Research Studies
Mark E. Newton、J M Baker1991-05-20Journal of Physics Condensed Matter
No new experiments are reported in this paper: the paper comprises a re-interpretation of published EPR data of the various di-nitrogen centres in brown diamond, including the new ENDOR results of the authors' previous paper on the W7 centre (see ibid., vol.3, p.3591, 1991). The new evidence about W7 provided by these…
High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchRare-earth and actinide compounds
Mitsuyoshi Fujiyama、Tetsuo Wakino1991-05-20Journal of Applied Polymer Science
Abstract Flexural test specimens were injection‐molded from polypropylenes added with 0.5 wt % calcium carbonate, talc, p ‐ tert ‐dibutyl‐benzoic acid monohydroxy aluminum, or p‐ dimethyl‐benzylidene sorbitol under cylinder temperatures of 200–320°C. Distributions in the flow direction of higher‐order structures such…
Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesInjection Molding Process and Properties
Hidetoshi Saitoh、Walter A. Yarbrough1991-05-20Applied Physics Letters
Polycrystalline boron nitride films have been deposited using microwave plasma-enhanced chemical vapor deposition. IR absorption spectra of films deposited using NaBH4 as the boron source in NH3 and H2 gases showed absorptions which are nearly the same as the characteristic vibrational modes seen in cubic and pyrolyti…
Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchBoron and Carbon Nanomaterials Research
F. Rybnikář1991-05-20Journal of Applied Polymer Science
Abstract Interaction in the system isotactic polypropylene–calcite was investigated using X‐ray diffraction and transmission electron microscopy. Calcite acts as a weak nucleation agent for polypropylene crystallization and its activity could be increased or decreased by a suitable surface treatment. Investigation of…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
D. P. Jensen、L. W. Morgan1991-05-20Journal of Applied Polymer Science
Abstract The relationship between the particle sizes and minimum film formation temperature (MFT) of polymer colloids was studied. Early workers had developed theoretical models predicting small particle colloids should coalesce easier and have lower MFTs than those of large colloids. Early published work examining th…
Advanced Polymer Synthesis and CharacterizationMaterial Dynamics and PropertiesPickering emulsions and particle stabilization
Mitsuyoshi Fujiyama、Tetsuo Wakino1991-05-20Journal of Applied Polymer Science
Abstract Flexural test specimens were injection‐molded from polypropylenes added with 0.5 wt % of calcium carbonate, talc, p ‐ tert ‐ dibutyl‐benzoic acid monohydroxy aluminum, or p ‐di‐methyl‐benzylidene sorbitol under cylinder temperatures of 200–;320°C. Properties such as flexural modulus, flexural strength, heat d…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
F Van Der Weeen1991-05-20International Journal for Numerical Methods in Engineering
Abstract Three algorithms for draping biaxially woven fabrics on arbitrarily curved surfaces are presented and compared for numerical accuracy and computational expense. The first one minimizes the elastic energy in each fabric cell, while the two others are based on placing a net of interlocked and inextensible fibre…
Textile materials and evaluationsStructural Analysis and OptimizationVibration and Dynamic Analysis
R. Ramesh、A. Inam、W.K. Chan 等 8 位作者1991-05-17Science
Thin-film heterostructures of Bi(4)Ti(3)O(12)Bi(2)Sr(2)CuO(6+x), have been grown on single crystals of SrTiO(3), LaAlO(3), and MgAl(2)O(4) by pulsed laser deposition. X-ray diffraction studies show the presence of c-axis orientation only; Rutherford backscattering experiments show the composition to be close to the no…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsElectronic and Structural Properties of Oxides
R. Arora、Amit Kumar1991-05-16physica status solidi (a)
The dependence of the pre-exponential factor (σ0) on the activation energy (ΔE) is investigated for SeTe, SeTeM, GeSe, and GeSeM glassy alloys where M is a metal. An approximate linear dependence of In σ0 on ΔE is observed in SeTe and SeTeM systems with good quantitative agreement between the expected and cal…
Chalcogenide Semiconductor Thin FilmsPhase-change materials and chalcogenidesSolid-state spectroscopy and crystallography
A. A. Urusovskayar、A. M. Petchenko、V. I. Mozgovoǐ1991-05-16physica status solidi (a)
The effect of strain rate on yield point and dislocation density evolution during compression, as well as on the rate and depth of relaxation after some preliminary deformation and on 7.5 MHz ultrasonic attenuation of NaCl crystals is studied. The existence is found of a critical strain rate, at which the applied and…
Microstructure and mechanical propertiesHigh-Velocity Impact and Material BehaviorIon-surface interactions and analysis
Paul K. Dixon、Sidney R. Nagel、David A. Weitz1991-05-15The Journal of Chemical Physics
We measure the viscosity of glycerol by using photon correlation spectroscopy to observe the Brownian motion of small (∼100 nm) polystyrene spheres. By comparing the viscosity measured with different size spheres, we can measure the length scale dependence of the viscosity as the liquid is cooled towards the glass. In…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesRheology and Fluid Dynamics Studies
Tetsuhiko Tomiki、Minoru Kaminao、Yoshikazu Tanahara 等 6 位作者1991-05-15Journal of the Physical Society of Japan
Optical spectra of YAlO 3 (YAP) single crystals are measured for < a >, < b > and < c >// E in the region from 6.5 eV to 42 eV by use of a plane polarized synchrotron radiation, E being the electric field of light. Anisotropic spectral behaviour of the intrinsic absorption including the tail absorption is found, and a…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsSolid State Laser Technologies
Shin-Puu Jeng、Robert J. Lad、Victor E. Henrich1991-05-15Physical review. B, Condensed matter
The satellite structure in both core-level and valence-band photoemission spectra from single-crystal MnO(100) has been studied by using both x-ray photoemission spectra and resonant photoemission. Only very weak satellites are present in the Mn 2p core-level spectra, while no satellite structure is evident in the Mn…
ZnO doping and propertiesElectron and X-Ray Spectroscopy TechniquesElectronic and Structural Properties of Oxides
Z. G. Soos、R. G. Kepler1991-05-15Physical review. B, Condensed matter
Two-photon-absorption (TPA) spectra of poly(di-n-hexylsilane) (PDHS) films are obtained from 605 to 410 nm at 295 and 11 K, where the intensity is an order of magnitude higher. A strong TPA band is found above 5 eV and interpreted in terms of interacting \ensuremath{\sigma} electrons in a Pariser-Parr-Pople (PPP) mode…
Synthesis and characterization of novel inorganic/organometallic compoundsLuminescence and Fluorescent MaterialsOrganoboron and organosilicon chemistry
D.B. McGarrah、A. J. Antolak、W. Williamson1991-05-15Journal of Applied Physics
Elastic differential and total cross sections are presented for electron scattering by zinc and cadmium using the optical model. The cross sections are determined for scattering by free atoms and by atoms bound in a solid. The phase shifts are obtained from solutions to the reduced radial wave equation based on an opt…
Advanced Chemical Physics StudiesAtomic and Molecular PhysicsElectron and X-Ray Spectroscopy Techniques
Kil-Oung Choi、S. W. Lee、Hye-Ji Bae 等 6 位作者1991-05-15The Journal of Chemical Physics
The emission from KCl:Sb3+ and KI:Sb3+ excited in the A-absorption band was measured as a function of exciting photon energy and temperature. The A-band excitation produced two emission bands for KCl:Sb3+ and a single band for KI:Sb3+. The definitive assignment of these bands is presented in terms of the adiabatic pot…
Luminescence Properties of Advanced MaterialsPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallography
Nader Engheta、P. Pelet1991-05-15Optics Letters
We analyze the surface-wave propagation in homogeneous layers of chiral or optically active materials. Two cases of chiral slab are considered: a symmetric chiral slab waveguide and a grounded chiral slab waveguide. The dispersion relation and the electric-field components for surface waves guided in a symmetric chira…
Metamaterials and Metasurfaces ApplicationsOrbital Angular Momentum in OpticsPhotorefractive and Nonlinear Optics
Michalis N. Zervas1991-05-15Optics Letters
Surface plasmon-polariton modes supported by thin metal films surrounded by dissimilar semi-infinite dielectrics are studied. The dispersion of the modes is evaluated, and their characteristics are investigated when the metal film thickness and the superstrate refractive index are varied. Long-range surface plasmon-po…
Plasmonic and Surface Plasmon ResearchPhotonic Crystals and ApplicationsOptical Coatings and Gratings