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。
Abstract A functional monomer which enables the synthesis of sulfonated poly(ether ether ketone) (SPEEK) polymer with the sulfonic acid group in the pendant side chain has been successfully developed. 1, 3‐propane sultone was used as the model compound to introduce the side chain moiety in the monomer. The above sulfo…
Banana fiber-reinforced nanocomposites were fabricated by melt mixing in a twin-screw extruder followed by compression molding in this study. Maleic anhydride polypropylene copolymer (MA-g-PP) was used as a compatibilizer to increase the compatibility between the PP matrix, clay, and banana fiber to enhance exfoliatio…
Although the carbon nanotube (CNT) features superior thermal properties in its pristine form, the chemical functionalization often required for many applications of CNT inevitably degrades the structural integrity and affects the transport of energy carriers. In this article, the effect of the side wall functionalizat…
Spherulitic growth rates of blends of polyhydroxybutyrate (PHB) with oligomers of atactic R,S-PHB-OH (Mn = 610, 910, and 2670 g/mol), as well as atactic R,S-PHB (Mn = 30 000 g/mol), were investigated by polarized light optical microscopy in the range from 50°C to 110°C. The temperature of maximum growth rate of PHB sp…
Large size sintered diamond anvils were used in the multi-anvil apparatus in order to raise the attainable pressure. Pressure generation up to 18 GPa in the DIA apparatus (truncation 3 mm), up to 30 GPa in a Drickamer anvil cell (anvil top 3 mmϕ), and more than 23 GPa in a 6–8 two stage system (truncation 2 mm) were a…
We report on the formation and development of the photonic band gap in two-dimensional 8-, 10-, and 12-fold symmetry quasicrystalline lattices of low-index contrast. Finite-size structures made of dielectric cylindrical rods were studied and measured in the microwave region, and their properties were compared with a c…
The development of the microstructures in experimentally reduced single crystals of San Carlos olivine (Fo92) has been studied by optical and electron microscopy. At 1400°C in a reducing atmosphere of nearly pure CO, reduction proceeds by propagation of a reaction zone from the surface to the center of the crystals. T…
Both MgSiO3 clinopyroxene and perovskite were synthesized in the diamond anvil cell from single crystal MgSiO3 orthoenstatite embedded in argon at 165 and 232 kbar, respectively, using the 10.6 μm radiation of a CO2 laser for heating. Raman spectra of MgSiO3 orthorhombic perovskite phase were exceptionally sharp, whic…
A large volume 2000-ton uniaxial split-sphere apparatus (USSA-2000) has been adapted to fabricate polycrystals of mantle minerals. By improving the gasket support and using NaCl as the pressure medium, a 14/7.5 MgO cell assembly with a telescopic graphite furnace to provide a low temperature gradient (<15°C/mm) and a…
Vibrational Raman spectra have been obtained for 50 to 100 μm single crystals of MgSiO3 perovskite in situ at high pressure. Seven bands were tracked as a function of pressure to 26 GPa using a diamond-anvil high-pressure cell with rare-gas pressure-transmitting media. The frequency shifts with pressure are positive,…
This chapter contains sections titled: Experimental Details Experimental Results Anisotropy in the Steady State Rheology of Synthetic Quartz Summary and Conclusions Appendices: Interpretation of the Creep Curves
The Experimental Breeder Reactor Two (EBR-II) was an unmoderated, heterogeneous, sodium-cooled fast breeder reactor operated by Argonne National Laboratory -West, now part of the Idaho National Laboratory in southeastern Idaho, USA. It was a pool-type reactor. The reactor core, sodium fluid pumps, and intermediate hea…
Die Synthese und Struktur gepfropfter Polyrotaxane, einer neuen Copolymerklasse mit mobilen Seitenketten, wird beschrieben. Poly(tetrahydrofuran)-Ketten wurden an die Achse des Pseudo[2]rotaxans angebracht, um das entsprechende gepfropfte Polyrotaxan zu erhalten (siehe Bild). N-Acetylierung der Ammoniumgruppen führt z…
The kinetics of CO(2) uptake by the cis-[Cr(C(2)O(4))(BaraNH(2))(OH(2))(2)]+ complex cation and the acid hydrolysis of the cis-[Cr(C(2)O(4))(BaraNH(2))OCO(2)]- complex anion (where BaraNH(2) denotes methyl 3-amino-2,3-dideoxy-b-D-arabino-hexopyranoside) were studied using the stopped-flow technique. The reactions unde…
The main aim of this article is to introduce a bending fatigue testing apparatus and a new fatigue testing method, which can be used to characterize the bending fatigue behavior of flexible materials by setting the following parameters: pre-tension, bending angle, and bending frequency. The Kevlar 49, poly(p-phenylene…
Amyloid fibrils have potential as bionanomaterials. A bottleneck in their commercial use is the cost of the highly purified protein typically needed as a starting material. Thus, an understanding of the role of heterogeneity in the mixtures from which amyloid fibrils are formed may inform production of these structure…
Cardiovascular tissue engineering has shown considerable progress, but in vitro tissue conditioning to stimulate the development of a functional extracellular matrix still needs improvement. We investigated the environmental factor oxygen concentration for its potential to increase the amount of collagen and collagen…
Abstract A bioactive derivative of a natural diarylheptanoid containing a 1,3‐anti diol motif was synthesized with the oxygen‐carrying stereogenic centers taken from an enantiopure epoxy chiral building block derived from inexpensive and readily available D‐glucolactone.
In the last few years, significant developments in membrane science and the vision of process intensification by multifunctional reactors have stimulated the academic and industrial research focused on membrane reactor application to chemical processes (Mendes et al., 2010, Dittmeyer et al., 2001, Basile et al., 2005a…
Arthonia anatolica sp. nov. is described on Aspicilia contorta subsp. hoffmanniana on calcareous rocks from central and eastern Turkey. The new species clearly differs from the other Arthonia species reported on Aspicilia sp. and most closely resembles Arthonia amylospora, a species known on Porpidia rugosa. The diffe…