Advanced Materials Research Vols. 850-851

Abstract: 4,4'-(o-benzonitrile) divinylbenzene compound was synthesized by Wittig-Homer reaction. Its crystal structure was determined by X-ray diffraction method. The fluorescence properties of the title compound in acetone solvents were investigated.

Abstract: biphenyl Derivative was synthesized by Wittig-Homer reaction. Its crystal structure was determined by X-ray diffraction method. The fluorescence properties of the title compound in solvents were investigated.

Abstract: Electrostatic spinning is now recognized as a versatile and easily feasible method for the preparation of micro and nanofibrous materials. Because of their high specific surface area and highly porous structure electrospun materials can find application as wound dressings that provide good draining and good air permeability [. By adding various types of material or chemical modification in electrospun materials, we can prepare a polymer with excellent antibacterial properties of nanomaterials. Copper, an inorganic antibacterial agent, is also called the second silver. The antibacterial research of copper series attracted great concern in recent years. First, the paper introduced the progress and mechanism of electrostatic spinning of native cellulose and Cu (II) ion antimicrobial fibres, and then did a brief presentation of copper ion antibacterial fibers on the bases of electrostatic spinning of native cellulose.

Abstract: High performance capillary zone electrophoresis (HPCE) was used in this text to determine the content of ferulic acid in a ready-made Chinese herbal medicine called AI-FUNUAN-GONG (in pills). Electrophoretic separation conditions: Uncoated fused silica capillary column (75um×49/58cm), injection height 7.5cm, 30mmolL^-1 borax solution, separation voltage 20kV, injection time 10s, detection wavelength 315 nm, experimental temperature 20°C.Linearity was kept in the concentration ranging from 1~62.5 mg·L^-1 of ferulic acid with correlation coefficient of 0.970. The average recovery was 97.541% and RSD value was 6.57%. Sample content of ferulic acid was 0.0715mg/g. This method has the advantages of strong specificity, simpleness, speediness, accurate results and good repeatability in separation and it is useful for determination of ferulic Acid in AI-FU-NUAN-GONG Pills.

Abstract: The (Cu₅₀Zr₄₅Al₅)_100-XY_X(x=0, 1, 2, and 3) alloys samples were prepared by copper mold suction casting method. The effect of the addition of Y on the structure, glass-forming ability, thermal stability and corrosion behaviors of the base BMG (Cu₅₀Zr₄₅Al₅) were investigated by means of XRD, DSC, DTA and electrochemical polarization. The results showed that Cu₁₀Zr₇ and Zr₂Cu phases are precipitated when Y addition exceeds 3at%, otherwise the alloys are fully amorphous state. Minor addition Y improved the thermal stability of the base alloy. The corrosion resistance of BMG alloy is deteriorated in 3.5% NaCl solution with addition of Y element as indicated by the corrosion potential and corrosion current density.

Abstract: A facile synthesis of anilinocarbonyl acetylene was achieved in a microwave-assisted condition via condensation of anilines and propiolic acid. The reactions can be completed smoothly within 10 minutes at 30 °C, producing terminal alkynes with excellent yields.

Abstract: The performance of JHMGC100S, a kind of HDPE for pipe, was studied, and the comparison with other typical PE100 resin in China and abroad was also did. The results show that: the impact strength of JHMGC100S was higher than other samples, and the bending strength was almost the same; the molecular weight distribution was obvious bimodal; the processability of JHMGC100S was good, and the hydrostatic strength of the pipe which was produced by JHMGC100S fulfilled the rule in GB/T 15558.1-2003.

Abstract: The study of solid-state composite polymer electrolyte (CPE) using different synthesis technique and test methods is a hot spot of current topics in polymer materials science. The electrolyte is a multiphase material with the advantageous properties over different dropping fillers. This manuscript presents a new idea for preparation composite polymer electrolyte based on the poly (ethylene oxide). We use scanning electron microscopy (SEM), Differential scanning calorimeter (DSC) measurements etc. to character the polymer electrolyte and their properties. This paper contains some new results. We observed a very change improvement of ion surface morphology by adding appropriate content of dropping fillers.

Abstract: Heterojunction photocatalyst containing one dimensional nanostructures exhibits interesting size, shape and material-dependent photocatalytic properties compared to single-component counterpart. In this work, we develop a simple two-step strategy to WO₃/TiO₂ heterojunction based on WO₃ nanorods and TiO₂ nanoparticles. The as-obtained heterojunction features core-shell morphology and has the advantage of extended solar light response, enhanced chemical stability and easy recyclability. As such, it exhibits high photocatalytic activity toward organic pollutants degradation including rodamine B dye and gaseous acetaldehyde.

Abstract: In the presence of an acid catalyst, PG react reversibly with acetaldehyde to form 2,4-dim-ethyl-1,3-dioxolane (24DMD). The effects of different operational parameters on PG conversion had been analyzed in paper, parameters included temperature, reaction time, amount of catalyst and aqueous acetaldehyde/PG molar ratio. Under optimal condition, 85% conversion of PG in aqueous solution was achieved within 180 min of reaction. The analysis of PG was conducted by gas chromatograph. Furthermore, reaction followed the second-order reaction kinetics, and the reaction rate constant was found to be 29.68min^-1.