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The effect of microcellular structure on the dynamic mechanical thermal properties of high-performance nanocomposite foams made of graphene nanoplatelets-filled polysulfone

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10.3390/polym13030437
 
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Antunes, Marcelo de Sousa PaisMés informacióMés informacióMés informació
Abbasi, HoomanMés informacióMés informació
Velasco Perero, José IgnacioMés informacióMés informacióMés informació
Document typeArticle
Defense date2021-01-29
PublisherMultidisciplinary Digital Publishing Institute (MDPI)
Rights accessOpen Access
Attribution 3.0 Spain
This work is protected by the corresponding intellectual and industrial property rights. Except where otherwise noted, its contents are licensed under a Creative Commons license : Attribution 3.0 Spain
ProjectESPUMAS POLIMERICAS MULTIFUNCIONALES BASADAS EN TERMOPLASTICOS DE ALTA TEMPERATURA (AEI-MAT2017-89787-P)
Abstract
Polysulfone nanocomposite foams containing variable amounts of graphene nanoplatelets (0–10 wt%) were prepared by water vapor-induced phase separation (WVIPS) and supercritical CO2 (scCO2) dissolution. WVIPS foams with two ranges of relative densities were considered, namely, between 0.23 and 0.41 and between 0.34 and 0.46. Foams prepared by scCO2 dissolution (0.0–2.0 wt% GnP) were obtained with a relative density range between 0.35 and 0.45. Although the addition of GnP affected the cellular structure of all foams, they had a bigger influence in WVIPS foams. The storage modulus increased for all foams with increasing relative density and GnP’s concentration, except for WVIPS PSU-GnP foams, as they developed open/interconnected cellular structures during foaming. Comparatively, foams prepared by scCO2 dissolution showed higher specific storage moduli than similar WVIPS foams (same relative density and GnP content), explained by the microcellular structure of scCO2 foams. As a result of the plasticizing effect of CO2, PSU foams prepared by scCO2 showed lower glass transition temperatures than WVIPS foams, with the two series of these foams displaying decreasing values with incrementing the amount of GnP
CitationDe Sousa Pais, M.; Abbasi, H.; Velasco J.I. The effect of microcellular structure on the dynamic mechanical thermal properties of high-performance nanocomposite foams made of graphene nanoplatelets-filled polysulfone. "Polymers", 29 Gener 2021, vol. 13, núm. 3, p. 437:1-437:16. 
URIhttp://hdl.handle.net/2117/339456
DOI10.3390/polym13030437
ISSN2073-4360
Publisher versionhttps://www.mdpi.com/2073-4360/13/3/437
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  • POLY2 - Polyfunctional polymeric materials - Articles de revista [114]
  • Departament de Ciència i Enginyeria de Materials - Articles de revista [913]
  • Doctorat en Ciència i Enginyeria dels Materials - Articles de revista [193]
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