Materials Literature
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Possible online quantification and calibration methods for capacitive couplers have been investigated experimentally. The purpose of the calibration is to ensure that if two different systems are used to measure the same sample, they measure the same "apparent PD magnitude," which is the charge transfer at the sample…
Polyester and meta-aramid nonwoven samples were treated at reduced pressure in a radiofrequency oxygen plasma for between 5 and 30 seconds. The hydrophilic effect of the plasma treatment was assessed by three consecutive vertical wicking tests on each sample. The influence of cleaning of the fiber surface before as we…
The mechanism of cavitation bubble streaming by ultrasonic vibration in a water tank was experimentally investigated. A standard ultrasonic cleaner unit with a resonant frequency of 40 kHz was used as an ultrasonic generator. The behavior of the streaming was visualized by the schlieren method and sonochemical lumines…
Techniques of thermal analysis, wide-angle X-ray diffraction, and small-angle X-ray scattering were used to reveal relationships between complex melting behavior and various crystal forms in a polymorphic polymer. Correlation between the multiple melting endotherms and polymorphic crystalline forms in poly(hexamethyle…
Abstract This paper gives a short review of our findings related to the copolymerization of γ‐butyrolactone ( B ) and L,L ‐lactide ( L ) with ϵ‐caprolactone ( C ) at or below B and L equilibrium concentrations in homopolymerization. We show, contrary to the commonly established opinions, that: (i) B effectively underg…
The mechanical properties of four-step three-dimensional braided composite at high strain rates are important in evaluating this kind of composite under dynamic and impulsive loading. The in-plane and out-of-plane compressive properties of E-glass/epoxy four-step three-dimensional braided composite at strain rates fro…
Using zinc bis(diethyldithiocarbamate) as a single-source molecular precursor, ordered ZnS nanotube arrays have been synthesized for the first time within the channels of the porous anodic alumina (PAA) membranes using CVD at 400 °C. The nanotubes, with an outer diameter of about 80–150 nm and a length of up to tens o…
The adsorption of phenol from aqueous solution onto the hypercrosslinked polymeric adsorbent NDA-100 and its dimethylamine aminated derivatives AH-1, AH-2 and AH-3, the commercial resin Amberlite XAD-4 and the weakly basic anion-exchange resin D301 was compared. Of the tested polymers, the aminated hypercrosslinked re…
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…