Thermal stability of polycarbonate-graphene nanocomposite foams
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Document typeArticle
Defense date2012
Rights accessRestricted access - publisher's policy
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Abstract
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.
CitationGedler, G. [et al.]. Thermal stability of polycarbonate-graphene nanocomposite foams. "Polymer degradation and stability", 2012, vol. 97, núm. 8, p. 1297-1304.
ISSN0141-3910
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0141391012002017
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