Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
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…
Abstract This study was concerned with the structural features and mechanical properties of polypropylene (PP)/low‐density polyethylene (LDPE) blends, which after compounding were modified by the free‐radical grafting of itaconic acid (IA) to produce [PP/LDPE]‐ g ‐IA in the course of reactive extrusion. To analyze the…
Abstract Two unsaturated polyesters containing a halogen (bromine) in the backbone of the polymer chain were synthesized and compared with a halogen‐free polyester. The bromine content was measured by elemental analysis. The chemical structures of the polyesters were characterized by means of IR and 1 H‐NMR spectrosco…
One interesting aspect of colloidal particles is the formation of colloidal crystals at the 2D and 3D levels. Here we report the dynamics and collapse of colloidal lattices at liquid-liquid interfaces using Pickering emulsions as an experimental template. The colloidal particles oscillate around their equilibrium posi…
Durch und durch grün: Nanokristalle mit einem CdxZn1−xSe-Kern wurden synthetisiert und mit CdyZn1−yS überzogen, um Kern-Schale-Nanokristalle mit der idealen Emissionswellenlänge für Quantenpunkt-LEDs (QD-LEDs) zu erhalten. Diese (CdxZn1−xSe)CdyZn1−yS-Kern-Schale-Nanokristalle wurden zur Herstellung farbgesättigter grü…
Abstract In an effort to prepare a novel novolac phenol (NP) based char former with good solubility, the hydroxyl functionalities of NP were blocked with phenyl isocyanate (PI) via a simple urethane‐forming reaction. The chemical structure and properties of the obtained novolac phenol–phenyl isocyanate adduct (NP–PI)…
Abstract The photodegradation of poly(vinyl alcohol) (PVA) in aqueous solution was investigated under UV exposure and pulsed‐laser irradiation. The degradation under UV exposure was studied at different pH values and with the addition of potassium chloride and potassium dichromate. The pulsed‐laser degradation of PVA…