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 Surface modification by plasma treatment is widely used for textiles and polymeric materials. Plasma processes are environmentally friendly and reduce chemicals and energy consumption. This study reports the effect of cold, low‐pressure oxygen plasma on the wettability properties of polypropylene (PP) nonwove…
Mobile poly(ethylene oxide) diglycidyl ether (PEODGE) segments were chemically grafted onto a soluble wheat protein (WP), and different network structures were formed via coupling reactions with ethyl diamine (EDA) in different PEODGE/EDA (PE) ratios. When the PE ratio was 1:1, linear PEs were the predominant segments…
Colloidal suspensions can be regarded as an ideal model system for such key daily materials as emulsions, protein solutions, foods, and inks. When colloidal particles strongly attract each other, they aggregate, phase-separate, and sometimes form gels. The basic understanding of this spatially heterogeneous jamming pr…
Conductive and mesoporous single-wall carbon nanohorn/resorcinol-formaldehyde aerogel composites were fabricated by embedding organic resorcinol-formaldehyde aerogels with single-wall carbon nanohorns. Samples were characterized with transmission electron microscopy, field emission scanning electron microscopy, nitrog…
Mechanical interactions between amorphous polymers and nanofillers were probed by measuring the tensile moduli of nanocomposite fibers with aligned single wall carbon nanotubes (SWNT) and carbon nanofibers (CNF). Polymer chains provide better load transfer and thereby higher tensile moduli when the polymer size is lar…
Abstract The mechanical properties and thermal stability of polymers can be enhanced through the formation of nanocomposites. Nanocomposites consisting of hybrid copolymers of methacrylcyclohexyl polyhedral oligomeric silsesquioxane (POSS‐1) and methyl methacrylate (MMA) with up to 92 wt % (51 mol %) POSS‐1 and with s…
Neutron elastic, inelastic, and high-energy x-ray scattering techniques are used to explore the nature of the polaron order and dynamics in the colossal magnetoresistive (CMR) system ${\mathrm{La}}_{0.7}{\mathrm{Ca}}_{0.3}\mathrm{Mn}{\mathrm{O}}_{3}$. Polaron correlations are known to develop within a narrow temperatu…
Abstract Ultra‐thin, optically transparent and electrically conducting films of pure carbon nanotubes (CNTs) are widely studied thanks to their promise for broad applications. In the present work, we study and compare different deposition techniques for the production of these networks: dip‐coating, spray‐coating, vac…
Self-assembly vesicles have been made from a cyclodextrin (CD) supramolecular complex, which is cooperatively formed with natural beta-CD, 1-naphthylammonium chloride (NA), and sodium bis(2-ethyl-1-hexyl)sulfosuccinate (AOT) by weak noncovalent interactions. In the complex structure, a NA molecule is included inside a…
Lanthanide complexes of tetraamide derivatives of DOTA are of interest today because of their application as chemical exchange saturation transfer (CEST) agents for magnetic resonance imaging (MRI). The protonation constants of some simple tetraamide derivatives of DOTA and the stability constants of the complexes for…
Several active belite laboratory clinkers with a theoretical composition of 60 wt% of C 2 S have been synthesized. The activation process has been carried out by adding variable amounts of alkaline salts, K 2 CO 3 , or Na 2 CO 3 to the raw materials. In addition to an ordinary Portland clinker and a nonactive belite c…
The optical properties of hollow nanoparticles (Au-Ag nanoboxes and nanocages) were investigated by recording Rayleigh scattering spectra of single particles, whose morphology and composition had been analyzed by scanning electron microscopy (SEM). This was achieved by depositing the particles on optically transparent…
A simple and high-yield synthetic route was developed to synthesize the different-shaped PbTiO3 powders. Spherical, rod, and cubic shapes of PbTiO3 were achieved from the precursors of spherical and rod TiO2/K2Ti4O9 compounds with PbO in the NaCl-KCl melts at the temperatures from 700 to 900 degrees C, respectively. R…
Abstract The creep behavior of poly(propylene)–multi‐walled carbon nanotube (MWNT) composites has been studied with short term tensile creep tests at different temperatures and is discussed in relation to the structural characteristics determined by AFM, DSC, and polarized light microscopy. Master curves of creep comp…
A simple hot colloidal method of preparing ZnTe nanowires is presented. Nanowire morphology was controlled by varying the identity of the amine cosurfactant in the growth solution. This produced smooth, brushlike, and multibranched brushlike structures in high yield. Nanowires appear to form via an oriented attachment…
Single-wall carbon nanotubes (SWNTs) are well dispersed in water using a polymer, polyvinylpyrrolidone (PVP), a surfactant, sodium dodecyl benzene sulfonate (SDBS), and brief low-power sonication. The concentration of these pristine SWNT dispersions are quite high, approaching 1 g/L, and remain stable over several mon…
Cholera toxin subunit B (CTB)--quantum dot conjugates were developed for labeling mammalian cells. The conjugates were internalized by all tested cell lines into small vesicles dispersed throughout the cytoplasm, while commercially available polyarginine conjugates rapidly accumulated in large perinuclear endosomes. A…
Silver telluride nanotubes have been prepared by the hydrothermal process without a template or a surfactant. The as-prepared sample was characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectra, and Raman spectra. The structural phase transition of the sample was observed. A ro…
We describe a process for transferring trioctylphosphine oxide-stabilized CdSe semiconductor nanocrystals (CdSe/TOPO quantum dots, QDs) from toluene into water through a ligand exchange process with a poly(ethylene glycol- b -2- N,N -dimethylaminoethyl methacrylate) (PEG- b -PDMA) diblock copolymer. In this polymer, t…
Polymandelide, an aryl analogue of polylactide, was synthesized by the ring-opening polymerization of mandelide, the cyclic dimer of mandelic acid. The poor solubility of rac -mandelide limited the synthesis of polymandelide via solution polymerization, but polymerization of mandelide at 70 °C as a heterogeneous slurr…