Piezoresistive effect in polypropylene-carbon nanofiber composites obtained by shear extrusion

doi:10.1088/0964-1726/19/6/065013

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/13457

Título:	Piezoresistive effect in polypropylene-carbon nanofiber composites obtained by shear extrusion
Autor(es):	Paleo, A. J. Hattum, F. W. J. van Pereira, J. Rocha, J. G. Silva, J. Sencadas, Vítor João Gomes Silva Lanceros-Méndez, S.
Data:	Jun-2010
Editora:	IOP Publishing
Revista:	Smart Materials and Structures
Resumo(s):	The piezoresistive effect on poly(propylene) (PP)–carbon nanofibre (CNF) composites fabricated by twin-screw extrusion and compression moulding has been investigated. The electrical and mechanical properties of PP/CNF composites have been obtained as a function of CNF concentration. Electrical conductivity exhibited low thresholds and values close to the required levels for EMI shielding applications at 2.4 vol%. Meanwhile the elastic modulus showed an enhancement with a maximum up to 130% for one of the composites at 0.9 vol% loading. Further, the piezoresistive response has been evaluated in four-point bending. Positive gauge factors between 2 and 2.5 have been obtained. The highest gauge factors are found within the percolation threshold. The characteristics of the materials and the production technique make them suitable for large scale applications.
Tipo:	Artigo
URI:	https://hdl.handle.net/1822/13457
DOI:	10.1088/0964-1726/19/6/065013
ISSN:	0964-1726 1361-665X
Versão da editora:	http://iopscience.iop.org/
Arbitragem científica:	yes
Acesso:	Acesso restrito UMinho
Aparece nas coleções:	CDF - FCD - Artigos/Papers (with refereeing) DEI - Artigos em revistas internacionais IPC - Artigos em revistas científicas internacionais com arbitragem