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Author(s): Vera Gonçalves
Lúcia Brandão
Adélio Mendes
Title: Development of porous polymer pressure sensors incorporating graphene platelets
Issue Date: 2014
Abstract: Electrically conductive polymer composites (ECPCs) based on porous polymeric matrices ofPEBA 4033 incorporating different types of graphene platelets were prepared and tested.PEBA 4033 polymer was mixed with different graphene platelets: grade H5, grade MX andgrade Ce750. Porous morphology was obtained for the ECPCs prepared with grapheneplatelets grade MX and H5, while for the grade Ce750 only a dense ECPCs was obtained.The porous ECPC loaded with 15 vol.% of graphene M5 exhibited a linear piezoresistiveresponse oin a log-log plot. Some limitations were detected for this ECPC, namely hysteresis and drift due to the poor mechanical properties. The porous ECPC loaded with 15vol.% M5 was further crosslinked, which improved its mechanical properties but thepiezoresistive effect became negligible. The incorporation of carbon black in this ECPCformulation was shown to be much more efficient than crosslinking to improve mechanical properties, but the piezoresistive response became poor.
Subject: Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia química
Engineering and technology::Chemical engineering
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/PEst-C/EQB/UI0511/2013/PROJECTO ESTRATÉGICO - UI 511 - 2013-2014/UI0511
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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