Thermal stability of polycarbonate-graphene nanocomposite foams
Tipo de documentoArtículo
Fecha de publicación2012
Condiciones de accesoAcceso restringido por política de la editorial
A thermogravimetric study in both nitrogen and air atmospheres has been carried out on unfilled and graphene-reinforced solid and foamed polycarbonate. Polycarbonate foams were prepared using a supercritical CO2 dissolution one-step batch foaming process. Results showed that polycarbonate displayed a characteristic one-step decomposition under nitrogen, while three-step degradation was observed in air. In addition, as-received pristine graphene nanoplatelets displayed a three-step degradation in air, compared to a mild degradation under nitrogen. It was found that the thermal stability remarkably improved for the foamed composites, related to a combination of a heat transfer reduction promoted by the insulating cellular structure and the presence of the platelet-like graphene, which helped create a physical barrier effect, delaying the escape of volatile products generated during decomposition.
CitaciónGedler, G. [et al.]. Thermal stability of polycarbonate-graphene nanocomposite foams. "Polymer degradation and stability", 2012, vol. 97, núm. 8, p. 1297-1304.
Versión del editorhttp://www.sciencedirect.com/science/article/pii/S0141391012002017
|1-s2.0-S0022247X12004039-main.pdf||Article principal||247.2Kb||Acceso restringido|