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Browsing by Subject "Nanocomposites"

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    • Article  

      Adaptive VN/Ag nanocomposite coatings with lubricious behavior from 25 to 1000 °c 

      Aouadi, S. M.; Singh, D. P.; Stone, D. S.; Polychronopoulou, K.; Nahif, F.; Rebholz, Claus; Muratore, C.; Voevodin, A. A. (2010)
      A two-phase nanocomposite coating that consists of inclusions of silver in a vanadium nitride matrix (VN/Ag) was investigated as a potential adaptive coating with a reduced friction coefficient from 25 to 1000 °C. This ...

    • Article  

      Carbon nanotube-reinforced crosslinked polyethylene pipes for geothermal applications: From synthesis to decomposition using analytical pyrolysis-GC/MS and thermogravimetric analysis 

      Roumeli, E.; Markoulis, A.; Kyratsi, Theodora; Bikiaris, D.; Chrissafis, K. (2014)
      Carbon nanotube reinforced crosslinked high density polyethylene (PEX) nanocomposites were synthesized for geothermal applications requiring higher polymer thermal conductivity and a comprehensive thermal decomposition ...

    • Article  

      Continuum model for the phase behavior, microstructure, and rheology of unentangled polymer nanocomposite melts 

      Stephanou, Pavlos S.; Mavrantzas, V. G.; Georgiou, Georgios C. (2014)
      We introduce a continuum model for polymer melts filled with nanoparticles capable of describing in a unified and self-consistent way their microstructure, phase behavior, and rheology in both the linear and nonlinear ...

    • Article  

      Effect of silicon nitride/oxide on the structure and the thermal conductivity of CoSi nanocomposites 

      Ioannou, M.; Delimitis, A.; Symeou, E.; Giapintzakis, John; Kyratsi, Theodora (2017)
      In this work, the fabrication of nanocomposites with silicon nitride/oxide into the thermoelectric matrix of cobalt silicide is presented. The different concentrations of nano-Si3N4 were intentionally introduced by mechanical ...

    • Article  

      Effect of sintering in ball-milled K 2Bi 8Se 13 thermoelectric nano-composites 

      Hatzikraniotis, E.; Ioannou, M.; Chrissafis, K.; Chung, D. Y.; Paraskevopoulos, K. M.; Kyratsi, Theodora (2012)
      K 2Bi 8Se 13 has many attractive features for thermoelectric applications. Recently, K 2Bi 8Se 13-based nanocomposite materials, consisting of nano-crystalline, micro-crystalline and amorphous phases, have been fabricated ...

    • Article  

      Evaluation of electrospun polymer-Fe3O4 nanocomposite mats in malachite green adsorption 

      Savva, I.; Marinica, O.; Papatryfonos, C. A.; Vekas, L.; Krasia-Christoforou, T. (2015)
      Magnetoactive nanocomposite fibers, based on poly(ethylene oxide) (PEO), poly(l-lactide) (PLLA) and pre-formed oleic acid-coated magnetite nanoparticles (OA·Fe3O4), were fabricated by electrospinning and evaluated for the ...

    • Article  

      Fabrication and characterization of magnetoresponsive electrospun nanocomposite membranes based on methacrylic random copolymers and magnetite nanoparticles 

      Savva, I.; Krekos, G.; Taculescu, A.; Marinica, O.; Vekas, L.; Krasia-Christoforou, T. (2012)
      Magnetoresponsive polymer-based fibrous nanocomposites belonging to the broad category of stimuli-responsive materials, is a relatively new class of soft composite materials, consisting of magnetic nanoparticles embedded ...

    • Article  

      Fabrication and characterization of superparamagnetic and thermoresponsive hydrogels based on oleic-acid-coated Fe3O4 nanoparticles, hexa(ethylene glycol) methyl ether methacrylate and 2-(acetoacetoxy)ethyl methacrylate 

      Papaphilippou, P.; Pourgouris, A.; Marinica, O.; Taculescu, A.; Athanasopoulos, G. I.; Vekas, L.; Krasia-Christoforou, T. (2011)
      Stimuli-responsive hydrogel nanocomposites comprised of swollen polymer networks, in which magnetic nanoparticles are embedded, are a relatively new class of "smart" soft materials presenting a significant impact on various ...

    • Article  

      Fabrication and characterization of superparamagnetic poly(vinyl pyrrolidone)/poly(L-lactide)/Fe3O4 electrospun membranes 

      Savva, I.; Constantinou, D.; Marinica, O.; Vasile, E.; Vekas, L.; Krasia-Christoforou, T. (2014)
      The fabrication of magnetoactive fibrous nanocomposite membranes based on poly(vinyl pyrrolidone) (PVP), poly(L-lactide) (PLLA) and pre-formed oleic acid coated magnetite nanoparticles (OA Fe3O4) is presented. The ...

    • Article  

      Fabrication, characterization, and evaluation in drug release properties of magnetoactive poly(ethylene oxide)-poly(l -lactide) electrospun membranes 

      Savva, I.; Odysseos, A. D.; Evaggelou, L.; Marinica, O.; Vasile, E.; Vekas, L.; Sarigiannis, Y.; Krasia-Christoforou, T. (2013)
      The fabrication of electrospun magnetoactive fibrous nanocomposite membranes based on the water-soluble and biocompatible poly(ethylene oxide) (PEO), the biocompatible and biodegradable poly(l-lactide) (PLLA) and preformed ...

    • Article  

      Heterogeneity in nanocomposite hydrogels from poly(ethylene oxide) cross-linked with silicate nanoparticles 

      Schexnailder, P.; Loizou, Elena; Porcar, L.; Butler, P.; Schmidt, G. (2009)
      We investigate the influence of ionic strength on the structural heterogeneity and viscoelastic properties of nanocomposite hydrogels. We use small-angle scattering and rheology to monitor structural changes as a function ...

    • Article  

      In situ polymerised polyamide 6/sepiolite nanocomposites: Effect of different interphases 

      Bilotti, E.; Duquesne, E.; Deng, H.; Zhang, R.; Quero, F.; Georgiades, Savvas N.; Fischer, H. R.; Dubois, P.; Peijs, T. (2014)
      The success of a polymer/clay nanocomposite depends from a number of factors including the intrinsic properties of the clay, nanofiller dispersion and orientation, matrix/filler interactions, etc. This manuscript focuses ...

    • Article  

      An innovative synthesis approach toward the preparation of structurally defined multiresponsive polymer (co)networks 

      Achilleos, M.; Demetriou, M.; Marinica, O.; Vekas, L.; Krasia-Christoforou, T. (2014)
      A new and facile synthesis approach employed for the fabrication of multiresponsive polymer conetworks characterized by predefined architecture and composition is described for the first time. The presented methodology ...

    • Article  

      Microstructure and nanomechanical properties of pulsed excimer laser deposited DLC:Ag films: Enhanced nanotribological response 

      Constantinou, M.; Pervolaraki, M.; Nikolaou, P.; Prouskas, C.; Patsalas, P.; Kelires, P.; Giapintzakis, John; Constantinides, G. (2017)
      Diamond-like carbon:silver (DLC:Ag) thin films, with metal contents as high as 16.8 at.%, have been deposited on silicon substrates using pulsed excimer laser deposition

    • Article  

      Molecular dynamic simulations of carbon nanotubes in CO2 atmosphere 

      Alexiadis, A.; Kassinos, Stavros C. (2008)
      This work investigates by means of molecular dynamics the filling of carbon nanotubes by carbon dioxide molecules. Nanotubes of various sizes are simulated and the resulting CO2 density calculated. The effects of various ...

    • Article  

      Multiresponsive polymer conetworks capable of responding to changes in pH, temperature, and magnetic field: Synthesis, characterization, and evaluation of their ability for controlled uptake and release of solutes 

      Papaphilippou, P.; Christodoulou, M.; Marinica, O. M.; Taculescu, A.; Vekas, L.; Chrissafis, K.; Krasia-Christoforou, T. (2012)
      This study deals with the preparation of novel multiresponsive (magnetoresponsive, thermoresponsive and pH-responsive) nanocomposite conetworks consisting of oleic acid-coated magnetite nanoparticles (OA•Fe 3O 4), ...

    • Article  

      Nanostructural studies of PVD TiAlB coatings 

      Monclus, M. A.; Baker, M. A.; Rebholz, Claus; Stolojan, V.; Gibson, P. N.; Leyland, A.; Matthews, A. (2006)
      TiAlB coatings with different compositions were deposited by co-sputtering from TiAl and TiB2 targets onto AISI316 stainless steel substrates at a temperature of 170 °C. The stoichiometry and nanostructure have been studied ...

    • Article  

      Nanostructure, mechanical and tribological properties of reactive magnetron sputtered TiCx coatings 

      Polychronopoulou, K.; Rebholz, Claus; Baker, M. A.; Theodorou, L.; Demas, N. G.; Hinder, S. J.; Polycarpou, A. A.; Doumanidis, C. C.; Böbel, K. (2008)
      This study describes the correlation between microstructure, mechanical and tribological properties of TiCx coatings (with x being in the range of 0-1.4), deposited by reactive magnetron sputtering from a Ti target in ...

    • Article  

      The nanostructure, wear and corrosion performance of arc-evaporated CrBxNy nanocomposite coatings 

      Polychronopoulou, K.; Baker, M. A.; Rebholz, Claus; Neidhardt, J.; O'Sullivan, M.; Reiter, A. E.; Kanakis, K.; Leyland, A.; Matthews, A.; Mitterer, C. (2009)
      The composition, nanostructure, tribological and corrosion behaviour of reactive arc evaporated CrBxNy coatings have been studied and compared to CrN. The CrBxNy coatings were deposited on a commercial Oerlikon Balzers RCS ...

    • Article  

      Novel combustion synthesis of carbon foam‑aluminum fluoride nanocomposite materials 

      Kostoglou, N.; Gunduz, I. Emre; Isik, T.; Ortalan, V.; Constantinides, G.; Kontos, A. G.; Steriotis, T.; Ryzhkov, V.; Bousser, E.; Matthews, A.; Doumanidis, C. C.; Mitterer, C.; Rebholz, Claus (2018)
      The facile, rapid and bulk production of composite materials consisting of carbon nanostructures doped with metal-based compounds has been a significant challenge for various research areas where such types of materials ...

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