Materials Literature
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Abstract A simple intercalating agent‐free approach to prepare epoxy/montmorillonite (MMT) clay nanocomposite is reported. Through this new approach, no organic modifiers are needed. Thus, the cost for preparing polymer nanocomposites can be significantly reduced. The extent of dispersion and exfoliation of clay in ep…
Abstract Polyimide (PI)/organoclay hybrid films were prepared by the solution intercalation method, using dodecyltriphenylphosphonium‐mica (C 12 PPh‐Mica) as the organoclay. The variations with organoclay content of the thermomechanical properties, morphology, and optical transparency of the hybrids were examined for…
Ferroelectric nanoparticles are described by a microscopic model which enables one to find the macroscopic polarization as well as the excitation energy of the soft mode and its damping with dependence on the temperature and the size of the particles. The constituents of the material are arranged in shells, and their…
Abstract The objective of the work is to exploit the processing advantages of c‐PBT oligomers, essentially required in industrial practice to produce new, robust, multifunctional hybrid copolymers of c‐PBT oligomers in a single reaction‐molding step, which will be suitable for the use in continuous fiber composites wi…
We derive expressions for the effective diffusion coefficient of Richardson's pairs in plastically strained solids as a function of the pair separation distance R. We predict that a crossover from superdiffusive to diffusive mixing takes place when R becomes comparable to the coherence length of the shearing events un…
The wettability by water of polyelectrolyte mono‐ and multilayers with different polycations or polyanions as the exposed layer is studied by contact angle measurements using the sessile drop technique. Measurements in a water‐saturated atmosphere and in ambient conditions [∼40% relative humidity (r.h.)] are made to s…
An easy approach to control the carbon nanotube (CNT) array selectivity on Si/SiO 2 in the floating chemical vapor deposition (CVD) method by adjusting the operation temperature is demonstrated. Aligned CNTs can be obtained directly on Si using a standard procedure at a relatively low temperature. After analyzing the…
Faserbildung: Zn(salphen)-Komplexe wie der im Bild gezeigte bilden im festen Zustand Nanofibrillen. Bei dieser Aggregatbildung werden intermolekulare Zn⋅⋅⋅O-Wechselwirkungen genutzt, die eine polymere Struktur mit einem (ZnO)n-Rückgrat stabilisieren. Über die Wahl der peripheren Substituenten sind lumineszierende Gele…
Abstract This study investigated the effects of raw fiber materials, fiber content, and coupling agent (CA) content on mixing torque, rheological properties, and crystallization behavior of wood plastic composites (WPC). WPCs were prepared through melt molding processes. This study adopted a response surface strategy…
This study investigated the effect of UV light irradiation on a Pt working electrode during the anodic electrodeposition of ceria (CeO 2 ) thin films in an aqueous solution containing Ce 3+ . UV light irradiation on the Pt anode induced the formation of holes in the valence band of anodically preformed CeO 2 nuclei, w…
We apply Gans theory to fit the absorption spectra of gold nanorods with aspect ratios R ≤ 2.5 in solution using both the longitudinal and transversal surface plasmon resonance absorption peaks and the dielectric constant of the medium, ε m, as a fitting parameter. By fitting the broadened absorption peaks using the a…
Poly(acrylic acid) forms insoluble hydrogen-bonded interpolymer complexes with methylcellulose in aqueous solutions under acidic conditions. In this work the reaction heats and binding constants were determined for the complexation between poly(acrylic acid) and methylcellulose by isothermal titration calorimetry at d…
Abstract The model of the molecular weight distribution (MWD) of polypropylene produced in a loop reactor is established. The simulated MWD data of the polymers produced in steady‐state polymerizations agree with the actual data collected from certain plant. The simulated weight‐average molecular weight data also agre…
Abstract The cure characteristics and physicomechanical properties of natural rubber (standard Nigerian rubber) vulcanizates filled with the fiber of bowstring hemp ( Sansevieria liberica ) and carbon black were investigated. The results showed that the scorch and cure times decreased, whereas the maximum torques incr…
Raman scattering measurements of vitreous ${\mathrm{SiO}}_{2}$ were performed over a wide range of temperatures in order to study the behavior of the boson peak and the quasielastic scattering. The analysis of quasielastic contribution in the framework of the J\"ackle model demonstrates that the quasielastic excess an…
Poly(oxyethylene) alkyl ether (CnEOm) is intercalated into the interlayer space of a layered silicate kanemite by using layered hexadecyltrimethylammonium (C16TMA) intercalated kanemite (C16TMA-kanemite) as the intermediate. C16TMA-kanemite was treated with an aqueous solution of C16EO10, and the intercalation of C16E…
The dispersion of fillers in polymers is generally associated with an improvement of at least some of the properties (mechanical, thermal, electrical, etc.) of the corresponding macromolecular material. These phenomena are known to result from the interactions, which take place at the molecular level between the polym…
Abstract Nanocomposites based on poly(iminosebacoyl iminodecamethylene) (PA1010) and multiwall carbon nanotubes (MWNTs) were successfully prepared by melt blending technique. environmental scanning electron microscope micrographs of the fracture surfaces showed that not only is there an evenly dispersion of MWNTs thro…
Abstract The present paper summarizes an experimental study on the molten viscoelastic behavior of HDPE/sisal composites under steady and dynamic mode. Variations of the melt viscosity and die swell of the composites with an increase in shear rate, fiber loading, and coupling agent concentration have been investigated…
Abstract The effects of clay on the morphology of the poly(acrylonitrile‐butadiene‐styrene) (ABS)/polypropylene (PP) nanocomposites were investigated. From the studies of wide angle X‐ray diffraction (WAXD) and transmission electron microscopy (TEM) analysis of the ABS/PP (70/30) nanocomposites with clay, it was obser…