Materials Literature
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Abstract Inverse concentrated emulsions were prepared using aqueous colloidal silica suspension as the hydrophilic dispersed phase and a solution of diglycidyl ether of bisphenol‐A (DGEBA), its curing agent polyamide resin, low molecular weight 650, surfactant nonyl phenol polyoxyethylene ether (NPE‐4) in 4‐methyl‐2‐p…
Abstract A facile strategy combining free radical telomerization and polycondensation to prepare hyperbranched polymers was developed. By selecting a suitable telogen and a vinyl monomer, the product obtained by telomerization could be regarded as an AB n type monomer for preparing a hyperbranched polymer via conventi…
Polyaniline (PANI) was synthesized chemically and doped with camphor sulfonic acid. New PANI/formvar blend films were prepared using solution blending. These blend films were characterized by UV-visible, Fourier transform infrared spectra and scanning electron microscopy to investigate their optical, structural and mo…
Calcium oxalate is the most frequently found crystal in plants. Its crystals have been reported in more than 200 plant families. Calcium oxalate crystals observed in the Solanacea family form unique pseudotetrahedral and chiral morphology, although the molecular structure is achiral. Additionally, the crystals extract…
Abstract Multilayer films of metal‐peptide dendrimers having a ferrocene core were constructed on gold surfaces functionalized with mercaptoundecanoic acid using a layer‐by‐layer approach for film construction. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to monitor the redox activity and…
Abstract High internal phase emulsion (HIPE) polymerization foaming process is controlled for the production of novel foams with various microcellular structures and morphologies. In this study, two types of organoclay and one type of natural clay, sodium montmorillonite (NaMMT) were introduced at different concentrat…
We investigate molecular adsorption on single-walled carbon nanotubes (NTs) by ab initio calculations and by measurements of the conductivity response of NT arrays to trace vapors for a range of linear chain molecules. Experiment and calculations show that the short-time responses give adsorption energies that increas…
Zn 0.95 Co 0.05 O thin films have been prepared by pulsed laser deposition at different preparation conditions. By optimizing the deposition parameters we were able to increase the reproducibility of our ferromagnetic films up to 50% as well as the magnetization to 2.3μB∕Co. The ferromagnetic properties could be impro…
A series of polydimethylsiloxane—silica composites each, with a different silica contents were prepared and investigated by multiple techniques: thermogravimetric analysis, X-ray diffraction, atomic force microscopy, contact angle measurements, and tensile strength tests, in order to evaluate some microscopic and macr…
Abstract N , N ‐Di(2‐hydroxyethyl)‐ N ‐dodecyl‐ N ‐methyl ammonium chloride was used as intercalation agent to treat Na + ‐montmorillonite and form a type of organic montmorillonite (OMMT). Hyperbranched OMMT (HOMMT) was prepared by condensation reaction between OMMT and the monomer we synthesized. It was then used in…
Abstract Commonly used dicumyl peroxide (DCP) in combination with coagent, triallyl cyanurate (TAC), as a crosslinking agent is well acceptable for dynamically vulcanized rubber phase of thermoplastic vulcanizates (TPVs). However, it generally produces volatile decomposition products, which cause a typical unpleasant…
It is known that a transition from layer-by-layer (LbL) to step-flow (SF) can occur at the earliest stages of SrRuO3 growth on SrTiO3(001). We report here the observation of a reversible transition between these two-dimensional growth modes that can occur at any SrRuO3 thickness, tuned by short growth interruption. We…
Abstract Stable aqueous dispersion of polyaniline (PAn) stabilized by a hydrophilic polymer poly(vinyl pyrrolidone) (PVP) exhibits interesting rheological properties different from its components. Shear thinning observed for both PVP and PAn–PVP colloid (PP) indicates partially entangled nature of the later. Linear vi…
The Pt/BiFeO3(BFO)/(Ba,Sr)TiO3(BST)/Si metal-ferroelectric-insulator/Si (MFIS) structures were fabricated by rf-magnetron sputtering. The electric properties of the BFO ferroelectric film with BST insulating buffer on Si substrates were investigated. BST demonstrates excellent insulating properties on Si substrates. T…
This article seeks to add to the discussion about hemp prohibition in the United States by comparing the environmental performance of industrial hemp relative to its substitutes in a few key industrial applications. The life cycle environmental performance of industrial hemp products is of particular interest because…
Sn O 2 solid and hollow nanocubes have been fabricated by a one-step hydrothermal treatment of tin foil in aqueous alkaline solutions at 200°C. The obtained cubes have an average edge length of about 300nm, and the thickness of the hollow cubes’ shell is in the range of 30–50nm. Based on the time-dependent experiments…
The isothermal recrystallisation of commercial purity aluminium alloy AA1200 cold deformed to either a true strain of 2 (86·5% reduction in thickness) or 4 (98·2% reduction in thickness) was studied phenomenologically in each material by means of quantitative microscopy. The microstructural path descriptors, V V , the…
Abstract The influence of dispersed organomodified montmorillonite (OMMT) on curing behaviors of natural rubber (NR)/chloroprene rubber (CR) blend was investigated. The preparing procedure includes premixed rubber individually with its additives and then the two components were blended according to gum weight ratio fo…
Two polyethylene (PE) samples (named BF and ES) were blended with 5% organoclay by melt processing at different shear rates. X-ray diffraction (XRD) showed that the organoclay was incorporated into the PE matrices. From the results it was determined that the level of intercalation was very similar for both systems. Th…
Abstract Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) were used to identify the mechanisms that lead to differences in the mechanical behavior of formulations of polypropylene blended with maleated polypropylene (MAPP) copolymers. MAPP lowered the melting temperature of PP indicating t…