Renewable PLA/PHBV Blend-Based Graphene Nanoplatelets and Carbon Nanotube Hybrid Nanocomposites for Electromagnetic and Electric-Related Applications

Author(s)

dos Anjos, Erick Gabriel Ribeiro ; Brazil, Tayra Rodrigues ; Morgado, Guilherme Ferreira de Melo ; Antonelli, Eduardo ; Rezende, Mirabel Cerqueira ; Pessan, Luiz Antonio ; Moreira, Francys Kley Vieira ; Marini, Juliano ; Passador, Fabio Roberto

• Document type: Journal article
• Source: ACS APPLIED ELECTRONIC MATERIALS; v. 5, n. 11, p. 13-pg., 2023-11-14.

Abstract

In response to the growing demand for multifunctional and eco-friendly materials, biodegradable polymers are gaining prominence in electronic nanocomposites. This study explores the addition of graphene nanoplatelets (GNP) and multiwall carbon nanotubes (MWCNT) to enhance the electrical and electromagnetic properties of poly(lactic acid) (PLA) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blends. Nanocomposites with improved performance were fabricated by utilizing solvent-free melt-processing methods (extrusion and injection molding). Specifically, 1 wt % MWCNT and 3 wt % GNP (1/3 (MWCNT/GNP)) exhibited exceptional properties with minimal nanomaterial content, achieving an electrical conductivity exceeding 10(-4) S/cm, making it ideal for antistatic packaging. Our simulated and experimentally validated reflection loss (RL) values, reaching -29 dB with a bandwidth of 2.78 GHz, suggest its potential as a microwave absorbent. These results expand the applications of PLA and PHBV in sustainable technologies, offering renewable and biodegradable solutions for various industrial sectors. (AU)

• FAPESP's process: 21/10136-3 - DEVELOPMENT OF FILAMENTS FOR ADDITIVE MANUFACTURING OF ABS WITH DIFFERENT CARBON MATERIALS FOR ELECTRONIC HOUSING
• Grantee: Erick Gabriel Ribeiro dos Anjos
• Support Opportunities: Scholarships in Brazil - Doctorate