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 mechanism of thermochemical dehydrogenation of the 1:3 mixture of Li(3)AlH(6) and NH(3)BH(3) (AB) has been studied by the extensive use of solid-state NMR spectroscopy and theoretical calculations. The activation energy for the dehydrogenation is estimated to be 110 kJ mol(-1), which is lower than for pristine AB…
For prediction of polymer systems behavior on processing and exploiting stages knowledge of phase diagrams is very useful and in some cases – necessary. They characterize equilibrium phase states and for particular systems – phase structure. Among other methods to estimate compatibility of two substances including pol…
Abstract The bonding of polylactic acid (PLA) films was investigated for a broad range of temperatures and contact times above the glass transition temperature in a lap shear joint geometry using an impulse welding system. It was observed that interfacial strength was linearly dependent to the fourth root of welding t…
Abstract The scope of this study consists in studying the effects of processing type on thermal stability of poly(ethylene terephthalate) (PET) and its nanocomposites prepared with organically modified clays. To achieve this goal, an intercalating agent was synthesized and montmorillonite type of clay modified with th…
Abstract Nanosized calcium carbonate (nano‐CaCO 3 )‐filled poly‐ L ‐lactide (PLLA) biocomposites were compounded by using a twin‐screw extruder. The melt flow behavior of the composites, including their entry pressure drop, melt shear flow curves, and melt shear viscosity were measured through a capillary rheometer op…
The reduction potentials (E°(Red) versus SHE) of hypercloso boron hydrides B(n)H(n) (n = 6-13) and B(12)X(12) (X = F, Cl, OH, and CH(3)) in water have been computed using the Conductor-like Polarizable Continuum Model (CPCM) and the Solvation Model Density (SMD) method for solvation modeling. The B3LYP/aug-cc-pvtz and…
Abstract Poly(3‐hydroxybutyrate) (PHB) is one type of polyhydroxyalkanoates often used as a biomedical material due to its biodegradable and biocompatible nature. However, the mechanical and thermal properties of PHB must be improved before it can be used in a wider variety of biomedical applications. To improve the t…
High-resolution SEM images of germanium nanocrystals (Ge-nc) synthesized by ion implantation in fused silica samples annealed at temperatures below and above the melting point of Ge show a strong size-selective depth-distribution of nanostructures, as evidenced by the correlation between the dimension of the observed…
Abstract A series of hyperbranched poly( p ‐phenylene benzobisthiazole)s (HBPBZTs) are synthesized by solution polycondensation of 2,5‐diamino‐1,4‐benzenedithiol dihydrochloride (DABDT, A 2 monomer) and 1,3,5‐benzene‐tricarboxylic acid (BTA, B 3 monomer). Their structure changes depending on the feed molar ratios (A 2…
Abstract The synthesis of water‐dispersilbe graphene nanosheets plays an important role in various practical applications. Herein, we have demonstrated an efficient method for the preparation of water‐dispersible graphene hybrid material from graphene oxide (GO) and a hydrophilic‐conducting polymer, namely, poly(3‐ami…
An effective method of controlling the density of ZnO nanopillars (ZnO-NPs) by using the self-assembled silver nanoislands as the growth catalyst is demonstrated. We were able to vary the density of the ZnO-NPs to within the range of ∼10–30 μm –2 by properly manipulating the size distribution of the silver nanoislands…
N,N′-Dicyclohexyl-1,5-diamino-2,6-naphthalenedicarboxamide (NA), a highly efficient and selective β-nucleating agent for isotactic polypropylene (iPP), was synthesized and chemically supported on the surface of multiwall carbon nanotubes (MWCNTs) via an amidation reaction. The β-nucleation ability of NA, itself, is su…
Abstract Real‐time wide‐angle X‐ray diffraction studies were successfully used to investigate the effect of film blowing process parameter on the crystalline orientation development during the blown film extrusion of low‐density polyethylene. Azimuthal distribution scans showed the evolution of crystalline orientation…
Wechselndes Licht: Ein linearer cyanidoverbrückter Fe2Co-Komplex (siehe Bild) unterliegt bei Temperaturänderung einem reversiblen kooperativen Ladungstransfer, der von einem Spinübergang und einem Wechsel zwischen polarem und unpolarem Zustand begleitet wird. Magnetische Eigenschaften und Polarität des dreikernigen Cl…
Abstract This study used in situ polymerization to prepare polyethylene terephthalate (PET) nanocomposites incorporating Ethoquad‐modified montmorillonite (eMMT), unmodified hectorite (HCT), or phenyl hectorite (phHCT) particles to study the impact of platelet surface chemistry and loading on thermal, mechanical, and…
Coating films can be usually prepared from organic solvent-based polymers or aqueous solvent-based latex dispersions. However, the aqueous film coating have been favoured in coating technology because of its wide applications, low environmental concerns, efficiency of the process, and wide commercial availability of c…
Abstract This article reports the rheological behavior of nanocomposites of isotactic polypropylene with both unmodified multiwall carbon nanotubes (CNTs) and phenol and 1‐octadecanol (C18) functionalized CNT (f‐CNT) at 0.1, 0.25, 1.0, and 5.0 wt% of the nanofillers. The incorporation of CNT at low loadings of 0.1 and…
Vaginal rings are currently being investigated for delivery of HIV microbicides. However, vaginal rings are currently manufactured form hydrophobic polymers such as silicone elastomer and polyethylene vinyl acetate (PEVA), which do not permit release of hydrophilic microbicides such as the nucleotide reverse transcrip…
Abstract Poly(butyl acrylate)/poly(vinyl acetate‐ co ‐methyl methacrylate) PBA/P(VAc‐ co ‐MMA) core–shell rubber particles with various shell compositions, i.e., VAc/MMA weight ratios, were used to toughen unsaturated polyester. The morphology and surface‐free energy of the rubber particles were determined by transmis…
A new phase change material Ge2Sb1.5Bi0.5Te5 (GSBT) with good optothermal effect has been developed as an inorganic photoresist. Masks based on the material can be easily fabricated by home-built laser direct writing (LDW) equipment, and as a result mask patterns have been successfully transferred onto Si substrates b…