Self-monitoring aligned MWCNT loaded PET composites, with different CNT content, were prepared via twin-screw extrusion starting from a PET/MWCNT masterbatch, and fully characterized. All electrically conductive samples showed self-monitoring ability, i.e. a variation in electrical resistance as a function of stress. Moreover, the insertion of MWCNTs resulted in mechanical reinforcement with respect to neat PET. It was found that both self-monitoring behavior and mechanical performance are directly related to MWCNT content and to the direction of applied stress with respect to CNT orientation. In particular, too high MWCNT content decreased sensitivity at low strain, whereas a minimum MWCNT content was required to insure ohmic conductivity.

Nanni, F., Mayoral, B., Madau, F., Montesperelli, G., Mcnally, T. (2012). Effect of MWCNT alignment on mechanical and self-monitoring properties of extruded PET-MWCNT nanocomposite. COMPOSITES SCIENCE AND TECHNOLOGY, 72(10), 1140-1146 [10.1016/j.compscitech.2012.03.015].

Effect of MWCNT alignment on mechanical and self-monitoring properties of extruded PET-MWCNT nanocomposite

NANNI, FRANCESCA;MONTESPERELLI, GIAMPIERO;
2012-01-01

Abstract

Self-monitoring aligned MWCNT loaded PET composites, with different CNT content, were prepared via twin-screw extrusion starting from a PET/MWCNT masterbatch, and fully characterized. All electrically conductive samples showed self-monitoring ability, i.e. a variation in electrical resistance as a function of stress. Moreover, the insertion of MWCNTs resulted in mechanical reinforcement with respect to neat PET. It was found that both self-monitoring behavior and mechanical performance are directly related to MWCNT content and to the direction of applied stress with respect to CNT orientation. In particular, too high MWCNT content decreased sensitivity at low strain, whereas a minimum MWCNT content was required to insure ohmic conductivity.
2012
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-IND/22 - SCIENZA E TECNOLOGIA DEI MATERIALI
English
Carbon nanotubes, Electrical properties, Mechanical properties, Extrusion
Nanni, F., Mayoral, B., Madau, F., Montesperelli, G., Mcnally, T. (2012). Effect of MWCNT alignment on mechanical and self-monitoring properties of extruded PET-MWCNT nanocomposite. COMPOSITES SCIENCE AND TECHNOLOGY, 72(10), 1140-1146 [10.1016/j.compscitech.2012.03.015].
Nanni, F; Mayoral, B; Madau, F; Montesperelli, G; Mcnally, T
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/77028
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