Biodegradable nanocomposites based on PLA/PHBV blend reinforced with carbon nanotubes with potential for electrical and electromagnetic applications

Autor(es)

Silva, A. P. B. ^[1] ; Montagna, L. S. ^[1] ; Passador, F. R. ^[1] ; Rezende, M. C. ^[1] ; Lemes, A. P. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo UNIFESP, Polymer & Biopolymer Technol Lab TecPBio, 330 Talim St, BR-12231280 Sao Jose Dos Campos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: EXPRESS POLYMER LETTERS; v. 15, n. 10, p. 987-1003, OCT 2021.
• Citações Web of Science: 0

Resumo

The production of poly(lactic acid) (PLA) biodegradable blends with other biopolymers, such as poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), and the introduction of carbon nanotubes (CNT) are promising solutions for electrical and electromagnetic application. PHBV has a great potential to improve the processing and toughness of PLA. The addition of CNT contributes to the electrical and electromagnetic properties of polymeric nanocomposites. PLA/PHBV blend (80/20) and PLA/PHBV blend-based nanocomposites with 0.5 and 1.0 wt% of CNT were produced. Morphology images showed the homogeneous dispersion of PHBV domains in PLA, and that CNTs are preferably dispersed in the PHBV phase. The CNT acted as a nucleating agent for the crystallization of PHBV and did not affect the thermal stability of the nanocomposites. CNT reduced the Izod impact strength; however, flexural properties were not affected. The addition of 1.0 wt% CNT resulted in better electrical properties (2.79.10(-2) S/m) and an excellent result as electromagnetic interference shielding material (attenuation of approximately 96.9% of the radiation in X-band). Biodegradable nanocomposite based on PLA/PHBV blend reinforced with 1.0 wt% CNT presented interesting properties for possible applications in electronic device and military sectors. (AU)

• Processo FAPESP: 19/15976-0 - Biodegradação como proposta para tratamento e recuperação de nanotubos de carbono oriundos de resíduos de nanocompósitos poliméricos biodegradáveis
• Beneficiário: Ana Paula Lemes
• Modalidade de apoio: Auxílio à Pesquisa - Regular