Materials Literature
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Abstract The molecular scale periodicity within the pore walls of amorphous mesoporous phenylene-silicas, derived using triblock copolymers under acidic conditions, was generated by the post-synthesis treatment with alkaline solution. Usually, acid conditions are not favorable for the formation of periodic arrangement…
In this communication, we report the synthesis of the first examples of terminally thiol‐functionalized alkoxycyanobiphenyls. The thermal behaviour of these mesogens and their intermediates was investigated by polarizing optical microscopy, differential scanning calorimetry and X‐ray diffractometry.
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation K. Kannan, K. R. Rajagopal; Simulation of fiber spinning including flow-induced crystallization.…
Abstract The reinforcement and concomitant nonlinear viscoelastic behavior have been investigated for several composites of linear polymer melt with various binary mixtures of nanofillers having different surface chemistries and particle sizes. The dependence of storage modulus and loss factor on dynamic shear strain…
We have conducted detailed Monte Carlo and molecular dynamics simulations of a model glass forming polymeric system near its apparent glass transition temperature. We have characterized the local structure of the glass using a Voronoi-Delaunay analysis of local particle arrangements. After a perturbative face eliminat…
The formation of different structures in phase-separated composite films (PSCOFs) from formulations of liquid crystals and photocurable monomers has been investigated using polarizing optical and scanning electron microscopies. Two processes, spatially nonuniform polymerization and diffusion of small molecules, play i…
This research focused on the use of sonication to destroy surfactants and surface tension properties in industrial wastewaters that affect traditional water treatment processes. We have investigated the sonochemical destruction of surfactants and a chelating agent to understand the release of metals from surfactants d…
We have measured N2 adsorption isotherms on single-wall carbon nanohorns (SWNHs) over the temperature range of 77–92 K, and isosteric heat of adsorption, q st, were determined. Adsorption measurements for SWNHs have been also done for for H2 at 20 K, and for H2 and D2 at 77 K, respectively. We have performed grand can…
The effect of hyperthermia on the nanoparticle extravasation in different tumour regions was investigated in real time using confocal laser scanning microscopy. Murine mammary carcinoma 4T1 was implanted in the nude mice dorsal skin-fold window chamber. Tumour angiogenesis was observed through the window chamber on da…
Three allogamous Neidium demes, referrable to N. ampliatum sensu lato, coexist without intergradation in Blackford Pond, Edinburgh, and some other lakes. A slight change in valve shape has occurred in one deme during the last 20 years. Morphological deme traits persist in healthy clonal cultures, but with time or duri…
High-resolution transmission electron microscopy and electron energy loss spectroscopy/energy-dispersive X-ray analysis were employed to reveal the development of nanoporous, amorphous anodic oxide films on niobium. The oxide was formed at 10 A m − 2 in a dehydrated phosphate/glycerol electrolyte at 453 K . The relati…
Abstract A new method is employed to directly predict the development of yield stress distributions in injection molded products of glassy polymers. The approach is based on the results of a study on the temperature dependence of the evolution of yield stress during annealing of polycarbonate below T g . In combinatio…
Theoretical investigation on pattern photopolymerization has been undertaken in various coexistence regions of a mixture of photocurable monomer and nematic liquid crystal. The phase diagram of the mixtures is constructed in accordance with a combined Flory−Huggins (FH) free energy of isotropic mixing and the Maier−Sa…
Four newly synthesized alkoxy tetrasubstituted phthalocyanines (Pcs) were characterized by polarized optical microscopy, differential scanning calorimetry, and X-ray diffraction on oriented samples. It was found that the introduction of lateral alkyl chains branched in the second position renders the material liquid c…
The crystal and molecular structures of a cyclic β-triketone, namely, trans -2-(4′-dimethylaminobenzylideneacetyl)-5,5-dimethylcyclohexane-1,3-dione ( I ), are determined using X-ray diffraction analysis. It is established that the compound in the crystalline state exists in a diketo-enol form stabilized by intramolec…
The aim of the present investigation is development of new cast alloys, strengthened by boride phases due to volume alloying by boron for increase of durability of products working in contact with abrasive or hydroabrasive environment, and also of technology of their production.
The Fusion Council of Japan has established the long-term program for the development of blanket in 1999. In the program, the solid breeder blanket was selected as the primary candidate blanket of the fusion power demonstration plant in Japan, while liquid breeder blankets and high temperature solid breeder blanket ha…
Certain substances like wax, when incorporated into rubber vulcanisates during mixing prior to vulcanisation are able to bloom and form a surface layer with significant importance in appearance and in protection against ozone. In tyres, this is particularly important in sidewall compounds as ozone protection reflects…
This paper presents two hybrid Newton-polarization methods for transient magnetoquasistatic field simulation, including hysteretic ferromagnetic materials, in conjunction with the finite integration implicit time-domain formulation. The hybrid techniques are based on the combination of the polarization method and the…
Nanosize clusters of titania were dispersed in mesoporous MCM-41 silica matrix with the help of the incipient wet-impregnation route, using an isopropanol solution of titanium isopropoxide as precursor. The clusters thus formed were of pure anatase phase and their size depended upon the titania loading. In the case of…