Development of porous polymer pressure sensors incorporating graphene platelets

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Vera Gonçalves (Author) FEUP; Lúcia Brandão (Author) FEUP; Adélio Mendes (Author) FEUP

Journal

Title: Polymer Testing

Vol. 37

Pages: 127-137

ISSN: 0142-9418

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 12 Citations

ISI Web of Science

Scopus - 14 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Associated Projects

UI0511 - PROJECTO ESTRATÉGICO - UI 511 - 2013-2014

Other information

Authenticus ID: P-009-M9T

DOI: 10.1016/j.polymertesting.2014.05.010

Abstract (EN): Electrically conductive polymer composites (ECPCs) based on porous polymeric matrices of PEBA 4033 incorporating different types of graphene platelets were prepared and tested. PEBA 4033 polymer was mixed with different graphene platelets: grade H5, grade MX and grade Ce750. Porous morphology was obtained for the ECPCs prepared with graphene platelets 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 piezoresistive response 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 15 vol.% M5 was further crosslinked, which improved its mechanical properties but the piezoresistive effect became negligible. The incorporation of carbon black in this ECPC formulation was shown to be much more efficient than crosslinking to improve mechanical properties, but the piezoresistive response became poor.

Language: English

Type (Professor's evaluation): Scientific

Notes: Publicação abrangida pelo Journal Citation Reports 2015

No. of pages: 9