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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Silva, A. P. B. [1] ; Montagna, L. S. [1] ; Passador, F. R. [1] ; Rezende, M. C. [1] ; Lemes, A. P. [1]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Paulo UNIFESP, Polymer & Biopolymer Technol Lab TecPBio, 330 Talim St, BR-12231280 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: EXPRESS POLYMER LETTERS; v. 15, n. 10, p. 987-1003, OCT 2021.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 19/15976-0 - Biodegradation as treatment proposal and recovery of carbon nanotubes arising from residues of biodegradable polymeric nanocomposites
Grantee:Ana Paula Lemes
Support Opportunities: Regular Research Grants