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Novel polycarbonate-graphene nanocomposite foams prepared by CO2 dissolution

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10.1088/1757-899X/31/1/012008
 
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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
PublisherIOP PUBLISHING LTD.
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Polycarbonate foams reinforced with 0,5 wt% of graphene were obtained by firstly melt-mixing the polycarbonate and graphene in an internal mixer, compression-moulding the melt-compounded grinded material and lastly dissolving CO2 inside a high pressure vessel. The CO2 desorption behaviour in the unfilled polycarbonate and nanocomposite was studied in terms of the CO2 saturation concentration and desorption diffusion coefficient, with the graphene-filled nanocomposite displaying a higher CO2 loss rate when compared to the neat polycarbonate. The cellular structure of the foams was found to be highly dependent on the saturation/foaming temperature, with smaller cell sizes being obtained with decreasing the temperature. Another parameter that had an important influence was the residual pressure, with higher residual pressure values resulting in foams with more uniform and regular cells.
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Originally published as "IOP Conference Series: Materials Science and Engineering", vol. 31, no 1, 2012. DOI:10.1088/1757-899X/31/1/012008. <http://iopscience.iop.org/1757-899X/31/1/012008>.
CitationGedler, G. [et al.]. Novel polycarbonate-graphene nanocomposite foams prepared by CO2 dissolution. "IOP Conference Series: Materials Science and Engineering", 2012, vol. 31, núm. 1. 
URIhttp://hdl.handle.net/2117/19348
DOI10.1088/1757-899X/31/1/012008
ISSN1757-8981
Publisher versionhttp://iopscience.iop.org/1757-899X/31/1/012008
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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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