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 The radical co‐ and terpolymerization of perfluoro(4‐methyl‐3,6‐dioxaoct‐7‐ene) sulfonyl fluoride (PFSVE) with 1,1‐difluoroethylene (or vinylidene fluoride, VDF or VF 2 ), hexafluoropropene (HFP), chlorotrifluoroethylene (CTFE), and bromotrifluoroethylene (BrTFE) is presented. Although PFSVE could not homopol…
Recently the liquid–liquid transition (LLT) was found in a molecular liquid, triphenyl phosphite, which allows us to follow the kinetics of the transformation of one liquid to another. Here we investigate the microscopic structural change during the LLT by means of time-resolved synchrotron x-ray scattering measuremen…
Porous, noncrosslinked polyelectrolyte-complex thin films (see figure), which will find applications in biomedicine, for example for drug or gene delivery, are achieved by using a simple, mild, and efficient method. Layer-by-layer assembly of polyanion and a blend of two polycations is followed by removal of the reduc…
Abstract With the addition of polyvinylpyrrolidone (PVP), alumina sol with an aluminum sec ‐butoxide/water molar ratio of 1 : 45 was synthesized. The surface tension of this alumina sol was found to be lower by 35% than the sol without PVP. Alumina/PVP hybrid film with a critical thickness up to 2 μm was fabricated by…
Nylon 6 nanocomposites were prepared using melt intercalation technique. Sodium montmorillonite (Na-MMT) was modified with octadecyl ammonium salt to evaluate the effect of clay modification on the performance of the nanocomposites. A comparative account with the nanocomposites prepared, using commercial clay cloisite…
Abstract A series of poly( L ‐lysine)s grafted with aliphatic polyesters, poly( L ‐lysine)‐ graft ‐poly( L ‐lactide) (PLy‐ g ‐PLLA) and poly( L ‐lysine)‐ graft ‐poly(ϵ‐caprolactone) (PLy‐ g ‐PCL), were synthesized through the Michael addition of poly( L ‐lysine) and maleimido‐terminated poly( L ‐lactide) or poly(ϵ‐cap…
There is a need to develop new scaffold materials with controlled surface properties for tissue engineering applications. For that purpose novel biodegradable poly[(organo)phosphazenes] were synthesized. A cell-binding molecule, galactose, was introduced via a spacer, either 6-aminohexanol (AH) or poly(ethylene glycol…
By using alkali salts as catalysts during chemical vapor deposition, several nanoscale carbon materials are formed. The morphology of the carbon materials mainly depends on the temperature at which the deposition process is carried out (see figure, width 5 μm, temperature set at 400 °C). The use of water-soluble alkal…
Abstract Peel and shear strength of two grades of epoxidized natural rubber (ENR 25 and ENR 50)‐based pressure‐sensitive adhesive was studied. Coumarone‐indene resin was used as the tackifier, whereas toluene was chosen as the solvent throughout the experiment. The tackifier loading was varied from 0 to 80 parts per h…
The temperature dependence of the photoluminescence decay of excitons in single-walled carbon nanotubes was measured for two nanotube species, (7,6) and (7,5), representative of the two nanotube $(n\ensuremath{-}m)\mathrm{mod}\phantom{\rule{0.2em}{0ex}}3$ families. A monotonic increase of the photoluminescence lifetim…
Abstract Two homologues, C6F4 and C10F4 having 2,3,5,6-tetrafluorophenylene moieties were synthesized and investigated on the mesomorphic behavior. It was revealed that these exhibit a hexagonal columnar (Colh) phase, and this mesomorphism is quite different from the corresponding nonfluorinated homologues, C6H4 and C…
Abstract Cyclization of deproteinized natural rubber (DPNR) or purified natural rubber latex was effectively performed in latex phase by using trimethylsilyl‐trifluoromethane sulfonate or trimethylsilyl triflate (TMSOTF) as a novel catalyst, which is still not reported in the case of natural rubber latex. Various cycl…
This method designed to examine the susceptibility to nonuniform corrosion, ranks among the more successful technique developments.One of its numerous advantages is that it allows nondestructive, on-site examination.EPR measurements are used to establish the resistance of stainless steels and alloys to intergranular c…
Careful control of the termination step during CNT growth results in straight roots and good adhesion to the substrate, in sharp contrast to the roots of naturally terminated CNTs that are highly curved and contain trapped catalyst. Direct force measurements show that well-controlled termination gives rise to an adhes…
Poly( N -vinylpyrrolidone) (PVP) is miscible with cellulose acetate (CA) with a degree of acetyl substitution (DS) of less than ca. 2.75, and a random copolymer of N -vinylpyrrolidone (VP) and methyl methacrylate (MMA) can also form completely miscible blends with CA, when the VP fraction in the copolymer is >30 mol %…
Ordered porous alumina with uniform as well as nanofunnel-shaped pore structures are fabricated by using interference lithography to template pore formation and to control the pore spacing, and by using electrolyte changes to independently control and vary the diameters of the pores.
BACKGROUND: Lipoplatin, a novel liposomal formulation of cisplatin, is composed of cisplatin and liposomes based on dipalmityl phosphatidyl glycerol (DPPG), soy phosphatidyl choline (SPC-3), cholesterol and methoxypolyethylene glycol-distearoyl phosphatidylethanolamine (mPEG2000-DSPE). Liposomal encapsulation of cispl…
We study the ordering dynamics of polymer crystallization using molecular dynamics simulations, in which the polymers are confined to small nanodomains surrounded by a noncrystalline medium. Although the adsorption process and surface diffusion of polymer chains play a major role in the case of the crystalline interfa…
We report the observation of extremely high dielectric permittivity exceeding ${10}^{9}$ and magnetocapacitance of the order of ${10}^{4}%$ in ${\mathrm{La}}_{0.875}{\mathrm{Sr}}_{0.125}\mathrm{Mn}{\mathrm{O}}_{3}$ single crystal. This phenomenon is observed below $270\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, and it exh…
This article addresses the development of a nonlinear control design for attenuating structural vibrations using magnetostrictive transducers operating in nonlinear and highly hysteretic operating regimes. We consider as a prototype a thin plate subjected to exogenous pressure waves and controlled via Terfenol-D trans…