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。
The crystallization of a celsian glass composition was investigated as a possible high-temperature ceramic matrix material Heat treatments invariably resulted in crystallization of the hexaclesian phase unless a flux, such as lithia, was added or a nucleating agent used (e.g., celsian seeds). TEM analysis revealed com…
Studies of the transformation kinetics and resulting microstructures of C materials processed at various temperatures are presented. C4 materials are produced through a displacement reaction between solid silica and molten aluminum. Evidence suggests that three distinct, temperature related processing regimes exist, e…
Shrinkage, sintering, softening, and melting of frits and glazes during firing can be observed. Measuring critical temperatures, contact angles, and other parameters makes possible the evaluation of glaze suitability under given firing conditions only when the heating rate of the equipment is close to that of industri…
Abstract A new method for beneficiating unfilled as well as filled polytetrafluoroethylene (PTFE) waste has been developed. This process does not use any carrier gas while forming the depolymerization products. It enables polymer manufacturers and end‐users to reuse and adds value to filled fluorocarbon polymer waste.…
In mollusks, the inner shell film is located in the shell-mantle zone and it is important in shell formation. In this study, we found that the film was composed of two individual films under certain states and some columnar structures were observed between the two individual films. The inner shell film was separated w…
Quantitative strain analysis (QSA) provides a means for assessing the orientation-dependent micromechanical stress states in bulk polycrystalline materials. When combined with quantitative texture analysis, it facilitates tracking the evolution of micromechanical states associated with selected texture components for…
Abstract Recycled poly(ethylene terephthalate)/bisphenol‐A polycarbonate/PTW (ethylene, butylacrylate (BA), and glycidylmethacrylate (E/nBA/GMA) terpolymer) were blended in different sequence through low temperature solid state extrusion (LTSSE) was studied. R‐PET/PC blends were toughened by PTW, resulting in the impr…
Abstract If a low weight percentage of crude fine fillers can improve properties of polymer materials directly without complicated chemical treatment process involved, it will be significant for many industrial applications. Our previous study indicated that a kind of Cancun natural sand could be an effective filler m…
Abstract Thermotropic liquid crystalline polymer (TLCP) nanocomposites reinforced with carboxylated multiwall carbon nanotube (c‐MWCNT) were prepared through melt compounding in a twin screw extruder. The thermal stability of TLCP/c‐MWCNT nanocomposites increased with even a small amount of c‐MWCNT added. The rheologi…
Abstract This study reports on the relationship between the crystalline structure and mechanical behavior of differently processed and annealed polyamide 12 (PA12) samples. Two sets of samples were obtained: isotropic PA12 films prepared by hot pressing and oriented cables prepared by consecutive extrusion and cold dr…
Er(3+) green upconversion (UC) emission corresponding to the transition of (4)S(3/2) ((2)H(11/2))-->(4)I(15/2) is enhanced in a Er/Dy-codoped LiNbO(3) crystal compared with Er-doped LiNbO(3) under 800 nm femtosecond-laser excitation at room temperature. The upconversion mechanisms are proposed based on spectral, kinet…
Peer Reviewed
Abstract A new strain exhibiting poly( L ‐lactic acid) (PLLA)‐degrading activity was isolated from the compost loaded with low‐molecular weight PLLA. The strain was rod‐shaped gram positive bacterium and was identified to be Bacillus licheniformis by the 16S rDNA sequence analysis. It degraded not only low‐molecular w…
A new alumina-based ceramic fiber, Nextel™ 650 Ceramic Oxide Fiber, has been developed for high temperature composite reinforcement applications. Nextel 650 fibers, which have the composition Al2O3 + 10 wt % ZrO2 + 1 wt % Y2O3, were measured to have 10–100 times lower creep rate than Nextel™ 610 Ceramic Oxide Fibers.…
Paraffin wax emulsion is prepared by emulsifying paraffin wax (PW) in water using stearic acid (SA) and triethanolamine (TEA) emulsifying system. A mother emulsion is prepared at different concentrations of PW (10.5—19.1%w/w) and SA (4.5—13%w/w) neutralized to different extents by TEA (25—100% degree of neutralization…
Abstract A series of novel block polymers of polyurethane (PU) and chitosan have been prepared in two steps. The first step is the preparation of PU prepolymer, obtained from polytetramethylene oxide glycol (PTMO, M n = 1000), isophrone diisocyanate (IPDI), and 2,2′‐dimethylol propionic acid (DMPA), followed by ionizi…
Antiferroelectric (AFE), ferroelectric (FE), or relaxor states can appear in $\mathrm{Pb}({\mathrm{In}}_{1∕2}{\mathrm{Nb}}_{1∕2}){\mathrm{O}}_{3}$ (PIN) depending on the perovskite B-site randomness. We studied the effects of this randomness on the dynamics of PIN by high resolution inelastic x-ray scattering using or…
In order to relate single fiber behavior to multiple fiber behavior in composites, fast-fracture tensile strength, creep, and stress-rupture studies were conducted on advanced SiC fiber multifilament tows in the temperature range from 20 to 1400 C in air as well as in inert environments. For conditions of small fiber…
Abstract Nucleation of protein crystals by gold nanoparticles was observed. Lysozyme and ferritin were used as model proteins. The effect was established with uncoated gold nanoparticles and with gold nanoparticles coated by 16‐mercaptodecanoic acid. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Abstract Exfoliated poly(vinyl acetate) (PVAc)/montmorillonite (MMT) and poly(vinyl acetate‐ co ‐glycidyl methacrylate) [P(VAc‐ co ‐GMA)]/MMT nanocomposite latices, prepared by soap‐free emulsion polymerization, were able to be cast into films, and the latter was crosslinked with diethylene triamine as a curing agent.…