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Thermal stability of polycarbonate-graphene nanocomposite foams

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10.1016/j.polymdegradstab.2012.05.027
 
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hdl:2117/16240

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Gedler, GabrielMés informació
Antunes, Marcelo de Sousa PaisMés informacióMés informacióMés informació
Redondo Realinho, Vera Cristina deMés informacióMés informacióMés informació
Velasco Perero, José IgnacioMés informacióMés informacióMés informació
Document typeArticle
Defense date2012
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
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. 
URIhttp://hdl.handle.net/2117/16240
DOI10.1016/j.polymdegradstab.2012.05.027
ISSN0141-3910
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0141391012002017
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  • Departament de Ciència dels Materials i Enginyeria Metal·lúrgica - Articles de revista [961]
  • POLYCOM - Polimers i compòsits: tecnologia - Articles de revista [96]
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