Materials Literature
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Chitosan has unique properties among biopolymers, especially due to the presence of several reactive groups, such as OH and NH 2 , which can react with many compounds. Chitosan and its derivatives are able to chelate metal ions, eliminate free radicals and resist oxidation. The development of chitosan and its derivati…
Inorganic/organic heterojunction solar cells (HSCs) have attracted increasing attention as a cost-effective alternative to conventional solar cells. This work presents an HSC by in situ growth of CuInS2(CIS) layer as the photoabsorption material on nanoporous TiO2 film with the use of poly(3-hexylthiophene) (P3HT) as…
Cellulose is the most abundant, renewable, and biodegradable natural resource on the earth. Grafting copolymerization technique is one of the key methods to widen the application scope of cellulose. This paper concerned with the recent progress and application of living/controlled radical graft polymerization techniqu…
Solid oxide fuel cells (SOFCs) have aroused worldwide attention for their high conversion efficiency, zero emissions, and fuel flexibility. Generally, a SOFC consists of an anode, a cathode and a electrolyte. The electrolytes usually exert a crucial role in the performance of SOFCs. The normal electrolyte materials co…
Polymerization of monomer/nanoparticle dispersion, namely in situ polymerization, has been frequently used for the fabrication of polymer nanocomposites. However, the interference of nanoparticle surface with polymerization in the course of composite formation has been tacitly neglected. In this work, surface-function…
An extraordinarily strong suppressor additive (IPEG) for copper plating has been synthesized by the copolymerization of imidazole and poly(ethylene glycol) diglycidyl ether (PEG-DGE). This new IPEG polymer contains the typical functional groups of both PAG (poly(alkylene glycol)) and IMEP (polymerizate of imidazole an…
Tungsten nanofibers are recognized as biologically potent. We study deviations in molecular composition between normal and digestive gland tissue of WOx nanofibers (nano-WOx) fed invertebrate Porcellio scaber (Iosopda, Crustacea) and revealed mechanisms of nano-WOx effect in vivo. Fourier Transform Infrared (FTIR) ima…
Two bio-based polyols (Polyol-r and Polyol-t) were synthesized from commercially available epoxidized soybean oil (ESBO). Polyol-r was obtained from ring opening of ESBO in the presence of fluoboric acid, while Polyol-t from a transesterification of Polyol-r with glycerol through a litharge catalyst. A rigid polyureth…
Die Orientierung der Moleküle in makroskopisch ausgerichteten Nanoröhren des Peptids AAAAAAK kann mit Festkörper-NMR- und IR-Spektroskopie untersucht werden. Linienformanalysen der NMR-Spektren deuten auf um 65–70° gegenüber der Nanoröhrenlängsachse geneigte peptidische N-H-Bindungen hin. Eine erneute Auswertung älter…
Abstract For the last ten years, the authors of this paper have been actively involved in studying the self‐assembly of block copolymers for their high potential in nano‐patterns fabrication. The aim of this paper is to give an overview of this important work by focusing on the main systems, process and results that h…
A novel method for preparing silver/poly(siloxane‐ b ‐methyl methacrylate) (Ag/(PDMS‐ b ‐PMMA)) hybrid nanocomposites was proposed by using the siloxane‐containing block copolymers as stabilizer. The reduction of silver nitrate (AgNO 3 ) was performed in the mixture solvent of dimethyl formamide (DMF) and toluene, whi…
Using impedance spectroscopy the electrical response of sensors with various porous Y-stabilized ZrO2 (YSZ) microstructures was measured for gas concentrations containing 0-100 ppm NO with 10.5%O2 at temperatures ranging from 600-700 °C. The impedance response increased substantially as the sensor porosity increased f…
Purpose The aim of this paper is to conduct a real time evaluation of polypyrrole as an anti‐corrosive pigment in epoxy polyamide coating. Design/methodology/approach This study deals with synthesis of polypyrrole (PPy) by chemical oxidative polymerisation in laboratory conditions. The synthesised PPy was characterise…
Poor chip breakage causes problems in machining of low-lead brass. To improve chip breakage, finite element model simulations were implemented in cutting tool design. Finite element model simulations enable high number of experiments that would be expensive and slow to perform by conventional cutting tests. Compressio…
This work reports the enhanced emission at 2.7 µm in Er3+/Ho3+-codoped fluorotellurite glass upon a conventional 980 nm laser diode. The significantly reduced green upconversion and 1.5 µm emission intensity in Er3+/Ho3+-codoped samples are observed. The results suggest that the Er3+: 4I13/2 state can be efficiently d…
Spider major ampullate (MA) silk varies in mechanical properties when spun in different environments. Amino acid compositional changes induced by variations in MaSp1 and MaSp2 expression, and various biochemical and physiological glandular processes induce silk property variability. Quantifying the contributions of th…
A predictive model, based on a Cellular Automaton (CA) - Finite Element (FE) method, has been developed to simulate microstructure evolution during metal solidification for a laser based additive manufacturing process. The macroscopic FE calculation was designed to update the temperature field and simulate a high cool…
Polyaniline–Poly(vinylidene) fluoride (PANI–PVDF) composites were prepared by adding PANI to the PVDF by different weight percentages p % ( p = 0, 5, 10, 20, ... until 100%). The dc and ac electrical conductivity were studied as a function of PANI percentage in the temperature range 303–453 K. The percolation threshol…
This article by orthogonal experimental method to determine the composition of chromate conversion and use of electrochemical method of electrochemical corrosion of the film discussed the substrate in different components, content, time and pH of chromate conversion coating of corrosion resistance. Orthogonal to deter…
${\text{Sm}}_{1\ensuremath{-}x}{\text{Y}}_{x}{\text{MnO}}_{3}$ (SYM x) is one of a class of multiferroic manganites that has seen significant recent interest due to the intimate connection between cycloidal magnetic order and ferroelectricity in these materials. SYM shows sequential transitions between paramagnetic, s…