Materials Literature
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Phenanthrene was adsorbed from ethanol solution to the surface of single wall carbon nanotubes, which were previously physically and chemically characterized. Different anionic surfactants were added in the solutions to enhance the phenanthrene solubility and apparently have also improved the dispersion of two respect…
Thermal breakdown and oxidation of JP-10 ( exo -tetrahydrodicyclopentadiene, C 10 H 16 ), in the presence of nanoparticulate CeO 2 and Fe 2 O 3, was studied in a small alumina flow-tube reactor on time scales around 1 ms. Decomposition products were analyzed by an in situ mass spectrometer. In the absence of any oxidi…
Abstract Perylene dyes are key chromophores in dyestuff chemistry. The solubility, absorption, and emission behavior of this class of materials can be efficiently controlled by functionalization using a variety of different synthetic procedures. Moreover, these chemical modifications have allowed their widespread appl…
An understanding of the interaction between ceria and environmentally sensitive molecules is vital for developing its role in catalysis. We present the structure and energetics of CO adsorbed onto stoichiometric (111), (110), and (100) surfaces of ceria from first principles density functional theory corrected for on-…
Crack patterns in a layer of laponite gel allowed to dry in a static electric field are studied. Crack patterns in natural and synthetic clays have been studied extensively with interesting results. This is the first report of such an observation in a radial electric field. The nano-sized disc-like laponite particles…
A MOKE magnetometry unit simultaneously sensitive to both in-plane magnetization components, based on an intensity differential detection method, allows us to observe the uniaxial anisotropy impressed during CoFe-deposition and to discriminate the magnetization processes under a magnetic field parallel and perpendicul…
Differences in the dynamic skin friction coefficients (mu) were investigated with respect to age, sex, and anatomical region. A total of 29 volunteers consisting of seven young females, seven old females, seven young males, and eight old males participated in the study. Measurements were obtained from II anatomical re…
Here we report a site-specific sequential nucleation and growth route to the systematic building of hierarchical, complex, and oriented ZnO micro/nanostructures in solution nanosynthesis. Structures and morphologies of the products were confirmed by results from X-ray diffraction and scanning electron microscopy studi…
Abstract We report systematic magnetic measurements on organic superconductor κ‐(BEDT‐TTF) 2 Cu[N(CN) 2 ]‐Br. The irreversibility line H irr (T) and the critical current density J c were studied. Our results show the strong dependence of H irr (T) and J c on the cooling rate. The H irr (T) data follow power dependence…
Abstract The effect of molecular weight on the rheological properties in the molten state has been studied for binary blends of high‐density polyethylene obtained by the Zieglar–Natta catalyst and low‐density polyethylene produced in an autoclave process. The blends composed of high‐density polyethylene with a high mo…
Abstract The effect of applied processing history and postprocessing annealing treatment on the rheological properties has been studied for a binary blend composed of linear low‐density polyethylene (LLDPE) and low‐density polyethylene produced by radical polymerization (LDPE). It has been found that intensive process…
Abstract Carbon/carbon composites were made through the pyrolysis of stabilized PAN felt and phenolic resin with the addition of 5 or 10 wt % carbon black to the matrix and then heat treatment at 600–2500°C. The effects of adding carbon black to the matrix precursor on the physical properties, microstructure, and mech…
Abstract The effects of deficiency in praseodymium and in strontium upon the magnetic and magneto‐transport properties of lacunar Pr 0.8–x □ x Sr 0.2 MnO 3 and Pr 0.8 Sr 0.2–x □ x MnO 3 oxides have been investigated. Our synthesized samples have been elaborated using the conventional solid state reaction at high tempe…
Abstract Polyvinylsilicone oil with condensed aromatics (called C 1 gum) was synthesized by Diels‐Alder reaction of polyvinylsilicone oil and acenaphthenecyclone, and was used as an additive in heat‐curable silicone rubber. The resistance to irradiation of the silicone rubber obtained was investigated by γ‐rays at dos…
Abstract Poly(ethylene terephthalate) (PET)/SiO 2 nanocomposites were prepared by in situ polymerization. The dispersion and crystallization behaviors of PET/SiO 2 nanocomposites were characterized by means of transmission electron microscope (TEM), differential scanning calorimeter (DSC), and polarizing light microsc…
Abstract The effects of both the degree of grafting and γ irradiation on the thermal stability and structural characteristic of polypropylene‐ graft ‐polyvinylpyrrolidone and polypropylene‐ graft ‐polyvinylpyrrolidone modified with α‐cyano‐δ‐(2‐thienyl) crotononitrile were investigated. The employed techniques were th…
Abstract Differential scanning calorimetry (DSC) is one of the best techniques for assessing PVC gelation level. Thus, it is of great interest to understand and optimize the different aspects of the DSC method. In the present study, DSC experiments were carried out on PVC dryblend samples that were previously heat‐tre…
Abstract Polydimethylsiloxane polyurethane (PDMS‐PU), which was synthesized from PDMS as the soft segment, was blended into a variety of ester‐ or ether‐based soft‐segment waterborne polyurethanes with different concentrations to investigate the crystallization, thermal, and physical properties of the membrane formati…
Abstract Poly( p ‐dioxanone)–poly(ethylene glycol)–poly( p ‐dioxanone) ABA triblock copolymers (PEDO) were synthesized by ring‐opening polymerization from p ‐dioxanone using poly(ethylene glycol) (PEG) with different molecular weights as macroinitiators in N 2 atmosphere. The copolymer was characterized by 1 H NMR spe…
Abstract In this study, it is presented for the first time, the characterization of an amorphous polyamide after having been subjected to humid thermal conditions such as those typically applied in the industrial sterilization of packaged foods. From a fundamental point of view, it was fortuitously found that the comb…