Composite Materials – Page 6 – TechConnect Briefs

Non-conductive ferromagnets based on core double-shell nanocomposites for radio-electric applications

Takacs H., Viala B., Hermán V., Tortai J.-H., Duclairoir F., Alarcon Ramos J., Jouneau P.-H., Okuno H., Tallec G., CEA, FR

We report a novel flexible nanotechnology for consumer product engineering as a complementary approach from solid-state manufacturing techniques based on metallic nanoparticles and graphene chemistries. We describe two chemical routes for producing closely-packed disordered assemblies [...]

Nanocomposite Materials

Annealing effect on composition and functional properties of hybrid C-Au-Ag nanoparticles

Manshina A., Povolotskiy A., Povolotskaya A., Koshevoy I., Tunik S., St. Petersburg State University, RU

Here we present an approach to the synthesis of hybrid C-Au-Ag nanoparticles which were found to be 20–30 nm carbon nanospheres containing dispersed Au-Ag bimetallic nanoparticles (1–5 nm). It was found also that C-Au-Ag NPs [...]

Percolation theory at work – boosting the heat transfer performance of graphitic nanofluids

Timofeeva E.V., Singh D., Yu W., France D., Argonne National Laboratory, US

A plethora of studies have reported high thermal conductivity of nanofluids with high aspect ratio carbon nanoparticles such as graphenes and carbon nanotubes. Although many repot thermal conductivity enhancements in carbonaceous nanofluids there is no [...]

Immobilization of AgZnO photocatalyst in Poly(acrylic acid) matrix and their photocatalytic activity evaluation

Jasso-Salcedo A.B., Meimaroglou D., Camargo M., Hoppe S., Pla F., Escobar-Barrios V.A., IPICYT, MX

The Ag modified Zinc oxide (AgZnO) is a catalyst with increased photocatalytic activity used for degradation of dyes and several organic molecules, in aqueous solution, in contrast to pure ZnO. Nevertheless, its application at pilot [...]

Block Copolymer Nanocomposites With Mono- And Bioriented Structures

de Sousa Jr. R.R., Amurin L.G., Demarquette N.R., Carastan D.J., Federal University of ABC - UFABC, BR

Block copolymer nanocomposites are materials with interesting structures and properties. The control of their morphology can be obtained during processing, and anisotropic structures may be oriented in one or two directions, affecting both the copolymer [...]

Nanomechanical and Morphological Characterizations of Spark Plasma Sintered WC- 5Co-1Cr-3MgO-0.7VC-0.3Cr3C2 Nanocomposite Powders Prepared by Solid-State Mechanical Mixing Technique

Sherif El-Eskandarany M., Al-Hazza A., Alduweesh A., Kuwait Institute for Scientific Research, US

WC-Co-based composites possess unique and useful properties that make them desirable materials for wide range of industrial applications such as tips for cutting and drilling tools, wear resistant parts in wire drawing, extrusion and pressing [...]

Versatile Polymer-Derived Nanocrystal Microreactors towards Uniform Fluorescent Photonic Crystal Supraballs

Zhang J., Ling L.T, Tian Y., Wang C.F., Chen S., Zhang J., Nanjing Tech University, CN

In this work, versatile polymer-derived NC microreactors were designed for the first time towards the construction of fluorescence colloidal photonic crystals. The carboxyl-terminated polystyrene colloids were synthesized by seeded copolymerization of AA and HEMA with [...]

Thermomechanical Properties of Epoxy Resin / Carbon Nanotubes / Clay Nanocomposites

Zois H., Patargia E., Kanapitsas A., Stimoniaris A.Z., Delides C.G., Technological Educational Institute Stereas Elladas, GR

The main aim of the present work is to investigate the thermomechanical properties and thermal stability of nanocomposite materials based on epoxy resin matrix reinforced with amine-modified multi-walled carbon nanotubes and clay nanoparticles (Closite 30). [...]

Effect of Layer Multiplying Extrusion on the Morphology and Properties of PS/CNT Nanocomposites

Jian R., Barry C., Mead J., University of Massachusetts-Lowell, US

Multilayer coextrusion has been used to produce extruded films having up to several thousand alternating layers with individual layer thicknesses ranging from several micrometers to only a few nanometers. In this work, the multilayer coextrusion [...]