Materials Literature
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A homologous series of azomesomesogens, 2"[4-(4'-n-alkoxybenzoyloxy)-3-chloro phenylazo] naphthalene, with lateral chloro group was synthesized. All twelve homologues of the series synthesized exhibit enantiotropic nematic mesophase. The plot of transition temperatures against the number of carbon atoms in the alkoxy…
Polyurethane/organophilic montmorillonite (PU/OMT) nanocomposites based on polyether, organophilic montmorillonite, phenylmethane diisocyante, diglycol, and glycerine were synthesized and characterized by x-ray diffraction (XRD). Delaminated or intercalated structures in polyurethane/OMT nanocomposites with different…
A novel series of luminescent heterodecanuclear mixed-metal alkynyl complexes, [Ag6(mu-dppm)4[mu3-C[triple bond]CC[triple bond]C-Re(N--N)(CO)3]4](PF6)2, (N--N = tBu2bpy, Me2bpy, phen, Br2phen), have been successfully synthesized; the X-ray crystal structures of [Ag6(mu-dppm)4[mu3-C[triple bond]CC[triple bond]C-Re(Me2b…
This paper deals with the numerical analysis of a test for the bending rigidity of textiles as proposed by Peirce. The mathematical model treats textile product as an elastica which is subject to large deflections. The results of the numerical calculations discussed in this paper are presented on the relevant graphs.…
Foaming of low density poly(ethylene-co-octene) resins by injection molding is the result of various reactions occurring during the process. This includes simultaneous decomposition of the chemical blowing agent and cross-linking of the polymer matrix during curing in the mold, followed by foaming after mold opening.…
We use cryo-scanning electron microscopy to visualize the penetration of a wetting fluid into various bleached softwood kraft papers. The results indicate that the fluid movement is due primarily to the advance of the wetting fluid in the form of bulk liquid films along channels formed by fibre overlaps. This is in co…
A thiophenophan-1-ene, of which two thiophene rings are bridged at 2- and 4-positions, was synthesized and its quantum yield for the photocyclization reaction was increased due to fixation to the photoactive anti-conformation.
The formability of an experimentally produced Mg-9%Li-1%Y alloy sheet with a thickness of 0.6 mm is investigated. Uniaxial tension tests and some fundamental press-forming tests, such as stretching, deep-drawing, and bore-expanding tests, are carried out at room temperature. The sheet has sufficiently high ductility u…
This paper describes the structural and electrochemical characterization of porous carbon thin film electrodes formed via a recently developed film fabrication technique called glancing angle deposition (GLAD). The technique involves physical vapor deposition of thin films onto unheated substrates oriented at highly o…
Analysis of the LIS data for several series of Ln(3+) complexes of C(4) symmetry in terms of structural changes, crystal-field effects and/or variation of hyperfine constants along the lanthanide series was undertaken using a combination of the two-nuclei and three-nuclei techniques together with the classical onenucl…
Abstract Polythiophene (PT) was grafted on PE film using three reaction steps. First, PE films were brominated in the gas phase, yielding PE–Br; second, a substitution reaction of PE–Br with 2‐thiophene thiolate anion gave the thiophene‐functionalized PE; finally PT was grafted on the PE surface using chemical oxidati…
Effects of chemical order, disorder, short range order, and anti-phase boundaries on phase transitions and dielectric properties of PbSc 1/2 Nb 1/2 O 3 are studied through molecular dynamics simulations of a FP model. Simulations of large systems are required to capture these effects, and we present an efficient recip…
A selection of alkenes has been epoxidised with iodosylbenzene, catalysed by three related iron(III) tetraarylporphyrins: 1*, 2* and 3* with four 2,6-di(1-phenylbutoxy)phenyl groups, with one pentafluorophenyl and three 2,6-di(1-phenylbutoxy)phenyl groups and with two pentafluorophenyl and two 2,6-di(1-phenylbutoxy)ph…
The influence of the newly developed binary accelerator 1-phenyl-2,4-dithiobiuret (DTB) in combination with sulphenamides like DCBS, MBS, TBBS on the cure characteristics, mechanical properties, viscoelastic behaviour and network characteristics of styrene butadiene rubber (SBR) is studied. Kinetics of vulcanisation i…
Heat transfer in solids is analyzed in order to show that the total phonon thermal conductivity in metal can be estimated from the knowledge of phonon-phonon interactions. Nonequilibrium molecular dynamics (NEMD) is used to simulate heat transfer due to phonon-phonon interactions in an aluminum slab. The influence of…
We report on the effects of depositing a protective inorganic solid electrolyte coating on amorphous electrode in terms of long-term cycling efficiency and stability of the in a liquid electrolyte. Two thin-film electrodes were fabricated for extensive cyclic durability testing in a carbonate liquid electrolyte: One f…
Values of the γ-ray, mass attenuation coefficient and the effective atomic number have been determined experimntally for xBaO. (1-x)B 2 O 3 (x=0.24, 0.30, 0.34, 0.40 and 0.44 ) and x CaO. (1-x)B 2 O 3 (x=0.30 and 0.40) glasses at photon energies 356, 511, 662, 1173, and 1332 ke V. It is pointed out that these glasses…
The dissolution rate of the passive film in near neutral (∼pH 6.7) 50 mM solutions containing between 0 and 150 mM NaCl is reported. Dissolution rates are determined by analysis of the voltammetric anodic growth curves, using a model in which oxide growth is governed by high-field transport of ions within the film, wh…
Elecotrospun nanofibers, with fiber diameters of 0.25 microns have been used in industrial, consumer and defense filtration applications for more than twenty years. Electrospun nanofibers have fiber diameters that are 5-10 times smaller than the smallest meltblown fibers available. Recently, Ultra-Web® nanofiber filte…
Microstructures in coated magnesium alloy with high purity magnesium fabricated by applying a vacuum deposition technique were investigated. Moreover, relationships between microstructures in coated and un-coated magnesium alloys and corrosion behaviors were interpreted by in-situ laser microscopic observations during…