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Polyvinylidene fluoride (PVDF) nanocomposites filled with low loading levels of pristine multiwalled carbon nanotubes (MWNTs), carboxyl functionalized MWNTs (FMWNTs) and vapor grown carbon nanofibers (VGCNFs) were prepared by a versatile coagulation method. The ac electrical conductivity of the composites was investigated in the frequency range 40-12 MHz. The frequency dependence of the conductivity...
Polyamide 6 (PA6) nanocomposites filled with 2, 4, 6, 8 wt% hydroxyapatite nanorods (nHA) were compounded in Brabender extruder followed by injection molding. The effect of nHA additions on the structure, mechanical properties and in vitro bioactivities of such nanocomposties were investigated. XRD patterns showed that PA6 crystallized exclusively in the ??-form by adding nHA. DSC analysis revealed...
Binary BaTiO3/PVDF nanocomposites and its nanographite (GN) doped ternary hybrids were fabricated using simple solution casting and hot compression molding. The dielectric behavior of such hybrids over a wide frequency range was studied. Additions of graphite nanosheets with their concentrations close to percolation threshold were found to be very effective to enhance the dielectric permittivity of...
The dielectric responses of polyvinylidene fluoride - based composites filled with silicon carbide nanoparticles were investigated over a wide frequency range from 50 to 5 ?? 107 Hz. The results showed that the dielectric permittivity of nanocomposites depend greatly on frequency. Furthermore, the dielectric constant increases with increasing SiC content, resulting from enhanced interfacial polarization.
A facile micelle template-hydrothermal method was used to synthesize hydroxyapatite nanorods with good thermal stability and biocompatibility. A novel micelle precursor consisting of CTAB/cyclohexane/ethanol/aqueous phase was hydrothermally treated at 150??C. XRD patterns and FTIR spectra showed that the synthesized products display the structure and main vibration modes of hydroxyapatite (HA). TEM...
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