Thermal stability of polycarbonate-graphene nanocomposite foams

Mechanical behaviour of cyclic olefin copolymer/exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxide

“…Quite surprisingly, only marginal attention has been devoted to xGnP based nanocomposites foamed through supercritical carbon dioxide. The thermal stability of polycarbonate/xGnP nanocomposite foams was studied by Gedler et al [39], while in another work the dependency of the cellular structure of these nanocomposite foams on the processing parameters (i.e. saturation and foaming temperature) was investigated [40].…”

Graphene nanoplatelets-reinforced polyetherimide foams prepared by water vapor-induced phase separation

“…Among carbon-based nanofillers, graphene and graphene-derived materials have caught a great deal of attention due to their extraordinary combination of properties, such as high surface area, aspect ratio, tensile strength, thermal and electrical conductivities, electromagnetic interference (EMI) shielding efficiency, flexibility, transparency or low coefficient of thermal expansion [5][6][7][8]. From another point of view, the excellent thermal stability of graphene has promoted investigations on several polymer-based composites such as poly (vinyl alcohol) (PVA) [9,10], poly(methyl methacrylate) (PMMA) [11], polystyrene (PS) [12], polyaniline [13], polypropylene (PP) [14] or polycarbonate (PC) [15] using different types of graphene, with remarkable enhancements in thermal stability being found. Another aspect of graphene that could have a favorable effect in terms of delaying polymer thermal decomposition is its platelet-like morphology, which, depending on the dispersion and exfoliation of graphene nanoplatelets (GnP) in the polymer matrix, could delay the escape of volatile products generated during polymer decomposition [15,16].…”

“…From another point of view, the excellent thermal stability of graphene has promoted investigations on several polymer-based composites such as poly (vinyl alcohol) (PVA) [9,10], poly(methyl methacrylate) (PMMA) [11], polystyrene (PS) [12], polyaniline [13], polypropylene (PP) [14] or polycarbonate (PC) [15] using different types of graphene, with remarkable enhancements in thermal stability being found. Another aspect of graphene that could have a favorable effect in terms of delaying polymer thermal decomposition is its platelet-like morphology, which, depending on the dispersion and exfoliation of graphene nanoplatelets (GnP) in the polymer matrix, could delay the escape of volatile products generated during polymer decomposition [15,16]. It has been reported that polymers filled with layered nanoparticles such as polymer-clay nanocomposites [17] and polymers reinforced with graphene nanoplatelets [6] show great improvements in some thermo-mechanical properties at lower filler amounts when compared to conventional particulate composites.…”

Nanocomposites of Multiphase Polymer Blend Reinforced with Carbon Nanotubes: Processing and Characterization

“…[175] The decomposition of neat polycarbonate under the nitrogen atmosphere occurs between 400 ºC and 500 ºC, showing two broad peaks on the weight derivative curve. [176] Two-step process includes oxidation and further depolymerization caused by the by-products cleavage. However, the first step based on radical mechanism can be retarded by the application of nitrogen atmosphere and eliminating water from the sample.…”

“…Reports on thermal behavior of PC-based nanocomposites show the general increase of thermal stability, [176] while the ABS-based nanocomposites are reported to decrease the thermal stability of the matrix. [174,182] When the flake-like nanofiller (e.g.…”