Electro-mechanical properties of triblock copolymer styrene-butadiene-styrene / carbon nanotube composites for large deformation sensor applications
作者： S. Lanceros-Méndez , P. Costa , A. Ferreira , V. Sencadas , J.C. Viana
DOI: 10.1016/J.SNA.2013.08.007
关键词: Deformation (engineering) 、 Copolymer 、 Elastic modulus 、 Piezoresistive effect 、 Composite material 、 Gauge factor 、 Materials science 、 Styrene-butadiene 、 Nanotube 、 Carbon nanotube
摘要: Abstract Thermoplastic elastomer/carbon nanotube composites are studied for sensor applications due to their excellent mechanical and electrical properties. Piezoresisitive properties of tri-block copolymer styrene–butadiene–styrene (SBS)/carbon nanotubes (CNT) prepared by solution casting have been investigated. The initial elastic modulus the SBS/CNT increases with increasing CNT filler content present in samples, without losing high deformation capability polymer matrix (∼1500%). Furthermore, above percolation threshold these materials unique development large sensors strong piezoresistive response. Piezoresistive evaluated uniaxial stretching tensile mode 4-point bending showed gauge factors up 120. linearity obtained between strain resistance makes interesting applications.
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