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TitleDevelopment of bio-hybrid piezoresistive nanocomposites using silk-elastin protein copolymers
Author(s)Correia, Daniela M.
Ribeiro, S.
Costa, André da
Ribeiro, Clarisse
Casal, Margarida
Lanceros-Méndez, S.
Machado, Raul
Gauge factor
Silk-elastin-like protein
Issue dateMar-2019
JournalComposites Science and Technology
CitationCorreia, Daniela M.; Ribeiro, S.; Costa, André da; Ribeiro, Clarisse; Casal, Margarida; Lanceros-Mendez, Senentxu; Machado, Raul, Development of bio-hybrid piezoresistive nanocomposites using silk-elastin protein copolymers. Composites Science and Technology, 172, 134-142, 2019
Abstract(s)Recombinant silk-elastin-like protein (SELP)/carbon nanotubes (CNTs) nanocomposite films with different amounts of CNTs (1, 3 and 6wt%) were prepared by solvent casting. The produced films were stabilized by exposure to methanol that induces an increase of the -structure content. The CNTs were homogeneously distributed into the SELP matrix and did not induce significant alterations into its chemical structure. The incorporation of CNTs also increased the thermal stability of the films. Further, the incorporation of 1wt% of CNTs greatly improved the mechanical properties of the SELP matrix leading to a 6-fold increase in strain-to-failure and to increase the ultimate tensile strength with minor differences in modulus of elasticity. The nanocomposites exhibited a good linearity between deformation and electrical resistance variation with electrical conductivity increasing with the nanofiller content up to 0.8Sm1. Finally, the produced nanocomposites were non-cytotoxic indicating their suitability for biomedical applications.
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series
CDF - FCD - Artigos/Papers (with refereeing)
DBio - Artigos/Papers

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