Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/28670
Title: Multifunctional hybrid structures made of open-cell aluminum foam impregnated with cellulose/graphene nanocomposites
Author: Pinto, Susana C.
Silva, Nuno H. C. S.
Pinto, Ricardo J. B.
Freire, Carmen S. R.
Duarte, Isabel
Vicente, Romeu
Vesenjak, Matej
Marques, Paula A. A. P.
Keywords: Bacterial cellulose
Graphene oxide
Multifunctional hybrid structures
Open-cell aluminium foam
Phase change materials
Issue Date: 15-Jun-2020
Publisher: Elsevier
Abstract: This work focuses on exploring combinations of disintegrated bacterial cellulose nanofibres (BC) with graphene oxide (GO) (reduced and non-reduced) and phase change materials (PCMs) prepared in the form of foam-like structures. The presence of GO remarkable improves the fire-retardancy and provides dimensional stability to the foams while PCMs gives thermal energy storage capacity. The foams were exposed to methyltrimethoxysilane (MTMS) vapour to become hydrophobic which was confirmed by measuring water absorption capacity and water contact angle. To extend the multifunctionality of these nanocomposite foams, a selected composition was impregnated into an open-cell aluminium foam creating a hybrid structure (Al-BC/GO) with higher mechanical properties (increase in stress of 100 times) and high sound absorption coefficient (near 1 between 1000-4000 Hz). The low thermal conductivity confirms that this hybrid structure is a thermal insulator. These advantages highlight the potential applications of the proposed materials e.g. construction, automotive and aeronautical sectors.
Peer review: yes
URI: http://hdl.handle.net/10773/28670
DOI: 10.1016/j.carbpol.2020.116197
ISSN: 0144-8617
Appears in Collections:TEMA - Artigos
DEM - Artigos
RISCO - Artigos

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