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 use of nanoparticles as drug delivery vehicles for anticancer therapeutics has great potential to revolutionise the future of cancer therapy. As tumour architecture causes nanoparticles to preferentially accumulate at the tumour site, their use as drug delivery vectors results in the localisation of a greater amou…
In shape-memory polymers, changes in shape are mostly induced by heating, and exceeding a specific switching temperature, T(switch). If polymers cannot be warmed up by heat transfer using a hot liquid or gaseous medium, noncontact triggering will be required. In this article, the magnetically induced shape-memory effe…
BACKGROUND: Delivery of anticancer therapeutic agents to solid tumors is problematic. Macromolecular drug carriers are an attractive alternative drug delivery method because they appear to target tumors and have limited toxicity in normal tissues. We investigated how molecular weight influences the accumulation of a m…
Abstract The reaction of glutaraldehyde with primary amino groups of chitosan produces covalent crosslinking in a matricial microsphere formulation. The influence of the crosslinking times on the calorimetric parameters (glass transition temperatures, enthalpy, and endothermic peak) of the system clorhydrate of chitos…
Abstract Branched and linear polyacetals prepared by cationic bulk polymerization were molded under high‐injection rate and pressure, and the resultant 1‐mm‐thick specimens were investigated regarding the crystalline morphology, mechanical properties, and transparency. The branched polyacetal exhibited shear‐induced t…
Abstract Benzoyl chloride is commonly used as a food preservative to control microbial contamination by reducing the growth rate and maximum growth population and extending the lag period of the target microorganisms. Benzoyl chloride was successfully incorporated into a matrix of an ethylene acrylic acid polymer. The…
Abstract The modification of the polarity and adhesive properties of linear low‐density polyethylene, low‐density polyethylene, and isotactic polypropylene through blending with paraffin wax (Fischer–Tropsch synthesis), grafted by maleic anhydride, was investigated. Maleic anhydride grafted paraffin wax significantly…
Abstract In the first part of this study, simultaneous addition of bromine and acrylate to the double bonds of castor oil was achieved. In the second part of the study, bromoacrylated castor oil (BACO) was reacted with toluenediisocyanate (TDI), to form a prepolyurethane (BACOP). The prepolyurethanes were reacted with…
The velocity autocorrelation function of concentrated colloidal fluids of hard-sphere particles, measured by dynamic light scattering, decays to the experimental noise floor from below. The decay follows a stretched exponential function of delay time for the colloidal fluid in thermodynamic equilibrium, and a power la…
Abstract The in situ optical absorption and fluorescence of poly(3‐octylthiophene) (POT) upon electrochemical doping were studied. Fluorescence from the undoped POT was observed in the acetonitrile electrolyte. It was quenched by the electrochemical doping. The effect of a dopant molecule on the intensity change of th…
Abstract The crystal structures of Ce 2 [SeO 3 ] 3 and Pr 2 [SeO 3 ] 3 have been refined from X‐ray single‐crystal diffraction data. The compounds were obtained using stoichiometric mixtures of CeO 2 , SeO 2 , Ce, and CeCl 3 (molar ratio 3:3:1:1) or Pr 6 O 11 , SeO 2 , Pr, and PrCl 3 (molar ratio 3:27:1:2) heated in e…
The energetic, electronic and structural properties of a heterojunction formed by BN and AlN (10,0) nanotubes have been studied using first principles density functional theory. The differences between the AlN and BN nanotubes lead to structural rearrangements mainly at the junction layers. Two different types of junc…
Abstract Summary: A four‐step strategy to synthesize well‐defined amphiphilic poly( ε ‐caprolactone‐ b ‐[ R , S ] β ‐malic acid‐ b ‐ ε ‐caprolactone) triblock copolymers [P(CL‐ b ‐MLA‐ b ‐CL)], which combines the anionic polymerization of [ R , S ] benzyl β ‐malolactonate (MLABz), and the coordination‐insertion ring‐o…
Self-aligned silver nanocolumns embedded in amorphous Al2O3 matrix are produced by alternate pulsed laser deposition at room temperature in a single step process. The morphology and the spatial distribution have been investigated by standard, high resolution, and scanning transmission electron microscopy. Polycrystall…
Abstract The esterification of cellulose with acetyl chloride in N ‐methyl‐2‐pyrrolidinone proceeded smoothly using crosslinked polyvinylpyridine (C‐PVP) as catalysts. The structures of the cellulose acetates were confirmed by FTIR, 1 H‐NMR, and 13 C‐NMR analyses. The molecular weights were determined by GPC, and the…
Abstract In this article, the damping properties of organic hybrids consisting of chlorinated polyethylene (CPE), N , N ‐dicyclohexyl‐2‐benzothia‐zolylsufenamide (DZ), and 4,4′‐thio‐bis(3‐methyl‐6‐ tert ‐butylphenol) (BPSR) have been investigated by dynamic mechanical analysis (DMA). It is found that DZ and BPSR seem…
S.327-332
To improve the dynamic response of a solid-state electrochromic (EC) device, a new concept has been introduced into the EC operation. The device is composed of an indium tin oxide-coated glass substrate, a thin amorphous WO3 film, a thin SiO2 film, a thin amorphous Ta2O5 film, and a semitransparent top contact. The EC…
The crystal and magnetic structures of $({\mathrm{Pr}}_{0.55}{\mathrm{Ca}}_{0.45})({\mathrm{Mn}}_{1\ensuremath{-}y}{\mathrm{Cr}}_{y}){\mathrm{O}}_{3}$ $(y=0.00,0.03,0.06)$ have been investigated between 5 and $300\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ by neutron powder diffraction and dc magnetic measurements. An orth…
Abstract A modified version of the two‐phase flow‐induced crystallization model of Doufas et al. (J Non‐Newtonian Fluid Mech 2000, 92, 27) for melt spinning of polymeric fibers is presented to address three issues: (1) discontinuities generated due to the imposition of continuation conditions at the crystallization on…