Polymer blending is a very important and widely used method for the modification of polymer materials. However, little attention has been paid to the Semi-aromatic Polyamides with PPS blends. In this article, we investigate the properties of Poly (phenylene sulfide) (PPS) blends with Poly (hexamethylene terephthalamide/hexamethylene hexanediamide) (nylon 6T/66). The structure, mechanical properties of nylon 6T/66 and (PPS) blends were studied by scanning electron microscopy (SEM), Differential scanning calorimetry (DSC) and Thermogravimetric analysis (TG). The results indicate that the blends have good thermal stability and the tensile strength, flexural strength and flexural modulus of the blends are better than the PA6T/66 but worse than that of the PPS.
In the present work, a Fe covered pure Mg ultrafine powderMg@Fe-was prepared through electroless plating of Fe on the arc plasma evaporated Mg powder in a FeCl 3 n-butyl alcohol solution. The phase components, microstructure and hydrogen sorption behaviors of the Mg@Fe composite powder were investigated using XRD, TEM and PCT techniques. TEM observations revealed that those ultrafine Mg particles were covered by nano ¡-Fe grains reduced by Mg during electroless plating. The hydrogenation enthalpy of the Mg@Fe composite is determined to be ¹78 kJ/mol H 2 based on PCT measurements. Meanwhile, the hydrogen absorption activation energy of Mg@Fe composite is reduced to 54.6 kJ/mol H 2 and the onset desorption temperature of hydrogenated Mg@Fe is lower down to 620 K when compared to those for pure Mg powder. The improved hydrogen sorption kinetic properties of Mg@Fe composite over pure Mg powder can be mainly attributed to the catalytic effects from nano ¡-Fe covered on the Mg ultrafine particles.
The carbon fiber (CF) reinforced polyphenylene sulfide (PPS) composite was modified by aminated polyphenylene sulfide (PPS-NH2) with different mass fractions. The quantified influence of aminated PPS on PPS/CF composites was investigated. The PPS/CF composite with 7wt% PPS-NH2 showed the best mechanical properties. The tensile strength, flexural strength, flexural modulus and impact strength of the composites increased by 12.5%, 13.0%, 38.5% and 31.5%, respectively. PPS-NH2 hardly influenced the melting process of PPS/CF composite. But the crystallization temperature (Tc) of PPS were obviously increased with the present of aminated PPS.
Bead-on-string nanofibers were prepared by electrospinning, in this work, . The effect of processing parameters and property of solutions on the morphology of bead-on-string nanofibers were systematically investigated. The results revealed that the morphology of beads on nanofibers transformed from spherical into spindle-like with increased concentration of solution, applied voltage and needle-collector distance. Average width of beads became smaller as increasing all the values of processing parameters. Meanwhile, the application for the removal of bisphenol A (BPA) from aqueous solution was investigated, and results showed that the bead-on-string nanofibers could effectively remove BPA from aqueous solution. The kinetic data were analyzed by the pseudo-first-order, pseudo-second-order kinetic models. The reusability of the composite nanofiber was also determined after five adsorption–desorption cycles.
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