This work focus on the development of polymeric blends to produce multifunctional materials for 3D printing with enhanced electrical and mechanical properties. In this context, flexible and highly conductive materials comprising poly(vinylidene fluoride)/thermoplastic polyurethane (PVDF/TPU) filled with carbon black-polypyrrole (CB-PPy) were prepared by compression molding, filament extrusion and fused filament fabrication. In order to achieve an optimal compromise between electrical conductivity, mechanical properties and printability, blends composition was optimized and different CB-PPy content were added. Overall, the electrical conductivities of PVDF/TPU 50/50 vol% co-continuous blend were higher than those found for PVDF/TPU 50/50 wt% (i.e., 38/62 vol%) composites at same filler content. PVDF/TPU/CB-PPy 3D printed samples with 6.77 vol% filler fraction presented electrical conductivity of 4.14 S m−1 and elastic modulus, elongation at break and maximum tensile stress of 0.43 GPa, 10.3% and 10.0 MPa, respectively. These results highlight that PVDF/TPU/CB-PPy composites are promising materials for technological applications.

Poly(vinylidene fluoride)/thermoplastic polyurethane flexible and 3D printable conductive composites / Bertolini, Mayara C.; Dul, Sithiprumnea; Barra, Guilherme M. O.; Pegoretti, Alessandro. - In: JOURNAL OF APPLIED POLYMER SCIENCE. - ISSN 0021-8995. - 138:17(2021), pp. 50305.1-50305.15. [10.1002/app.50305]

Poly(vinylidene fluoride)/thermoplastic polyurethane flexible and 3D printable conductive composites

Bertolini, Mayara C.;Dul, Sithiprumnea;Pegoretti, Alessandro
2021-01-01

Abstract

This work focus on the development of polymeric blends to produce multifunctional materials for 3D printing with enhanced electrical and mechanical properties. In this context, flexible and highly conductive materials comprising poly(vinylidene fluoride)/thermoplastic polyurethane (PVDF/TPU) filled with carbon black-polypyrrole (CB-PPy) were prepared by compression molding, filament extrusion and fused filament fabrication. In order to achieve an optimal compromise between electrical conductivity, mechanical properties and printability, blends composition was optimized and different CB-PPy content were added. Overall, the electrical conductivities of PVDF/TPU 50/50 vol% co-continuous blend were higher than those found for PVDF/TPU 50/50 wt% (i.e., 38/62 vol%) composites at same filler content. PVDF/TPU/CB-PPy 3D printed samples with 6.77 vol% filler fraction presented electrical conductivity of 4.14 S m−1 and elastic modulus, elongation at break and maximum tensile stress of 0.43 GPa, 10.3% and 10.0 MPa, respectively. These results highlight that PVDF/TPU/CB-PPy composites are promising materials for technological applications.
2021
17
Bertolini, Mayara C.; Dul, Sithiprumnea; Barra, Guilherme M. O.; Pegoretti, Alessandro
Poly(vinylidene fluoride)/thermoplastic polyurethane flexible and 3D printable conductive composites / Bertolini, Mayara C.; Dul, Sithiprumnea; Barra, Guilherme M. O.; Pegoretti, Alessandro. - In: JOURNAL OF APPLIED POLYMER SCIENCE. - ISSN 0021-8995. - 138:17(2021), pp. 50305.1-50305.15. [10.1002/app.50305]
File in questo prodotto:
File Dimensione Formato  
258-Bertolini-PVDF-TPU-3D-printing_JAPS-2021.pdf

Solo gestori archivio

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 7.33 MB
Formato Adobe PDF
7.33 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/11572/296642
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 12
social impact