For the first time, a porous mesh of poly(ε-caprolactone) (PCL) was electrospun directly onto carbon fiber (CF) plies and used to develop novel structural epoxy (EP) composites with electro-activated self-healing properties. Three samples, i.e., the neat EP/CF composite and two laminates containing a limited amount of PCL (i.e., 5 wt.% and 10 wt.%), were prepared and characterized from a microstructural and thermo-mechanical point of view. The introduction of the PCL mesh led to a reduction in the flexural stress at break (by 17%), of the interlaminar shear strength (by 15%), and of the interlaminar shear strength (by 39%). The interlaminar fracture toughness of the prepared laminates was evaluated under mode I, and broken samples were thermally mended at 80◦C (i.e., above the melting temperature of PCL) by resistive heating generated by a current flow within the samples through Joule’s effect. It was demonstrated that, thanks to the presence of the electrospun PCL mesh, the laminate with a PCL of 10 wt.% showed healing efficiency values up to 31%.

Thermal mending of electroactive carbon/epoxy laminates using a porous poly(ε-caprolactone) electrospun mesh / Cescato, Roberto; Rigotti, Daniele; Mahmood, Haroon; Dorigato, Andrea; Pegoretti, Alessandro. - In: POLYMERS. - ISSN 2073-4360. - 2021, 13:16(2021), pp. 2723.1-2723.21. [10.3390/polym13162723]

Thermal mending of electroactive carbon/epoxy laminates using a porous poly(ε-caprolactone) electrospun mesh

Cescato, Roberto;Rigotti, Daniele;Mahmood, Haroon;Dorigato, Andrea;Pegoretti, Alessandro
2021-01-01

Abstract

For the first time, a porous mesh of poly(ε-caprolactone) (PCL) was electrospun directly onto carbon fiber (CF) plies and used to develop novel structural epoxy (EP) composites with electro-activated self-healing properties. Three samples, i.e., the neat EP/CF composite and two laminates containing a limited amount of PCL (i.e., 5 wt.% and 10 wt.%), were prepared and characterized from a microstructural and thermo-mechanical point of view. The introduction of the PCL mesh led to a reduction in the flexural stress at break (by 17%), of the interlaminar shear strength (by 15%), and of the interlaminar shear strength (by 39%). The interlaminar fracture toughness of the prepared laminates was evaluated under mode I, and broken samples were thermally mended at 80◦C (i.e., above the melting temperature of PCL) by resistive heating generated by a current flow within the samples through Joule’s effect. It was demonstrated that, thanks to the presence of the electrospun PCL mesh, the laminate with a PCL of 10 wt.% showed healing efficiency values up to 31%.
2021
16
Cescato, Roberto; Rigotti, Daniele; Mahmood, Haroon; Dorigato, Andrea; Pegoretti, Alessandro
Thermal mending of electroactive carbon/epoxy laminates using a porous poly(ε-caprolactone) electrospun mesh / Cescato, Roberto; Rigotti, Daniele; Mahmood, Haroon; Dorigato, Andrea; Pegoretti, Alessandro. - In: POLYMERS. - ISSN 2073-4360. - 2021, 13:16(2021), pp. 2723.1-2723.21. [10.3390/polym13162723]
File in questo prodotto:
File Dimensione Formato  
274-Cescato_Polymers-2021.pdf

accesso aperto

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Creative commons
Dimensione 4.88 MB
Formato Adobe PDF
4.88 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/328922
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 5
social impact