Influence of graphene nanoplates and ABS-g-MAH on the thermal, mechanical, and electromagnetic properties of PC/ABS blend

Autor(es)

dos Anjos, Erick Gabriel Ribeiro ^[1] ; de Souza Vieira, Leonardo ^[1] ; Marini, Juliano ^[2] ; Brazil, Tayra Rodrigues ^[1] ; Gomes, Newton Adriano Santos ^[1] ; Rezende, Mirabel Cerqueira ^[1] ; Passador, Fabio Roberto ^[1]

Afiliação do(s) autor(es)

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

^[2] Fed Univ Sao Carlos UFSCar, Dept Mat Engn, Sao Carlos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Polymer Science; v. 139, n. 3 AUG 2021.
• Citações Web of Science: 0

Resumo

Polymeric blends based on polycarbonate (PC) and acrylonitrile-styrene-butadiene copolymer (ABS) are applied mainly in the electronic and automotive industries. Studies to improve the properties of PC/ABS blend have led to graphene nanoplates (GNP) addition, a carbon nanofiller derived from graphite that presents some of the promising properties of graphene. In this work, the effect of the addition of GNP (3 and 5 wt%) and maleic anhydride grafted ABS (ABS-g-MAH) were evaluated on the thermal, mechanical, rheological, and electromagnetic properties of PC/ABS blends (85/15), a different blend ratio of previous studies. It was verified that the GNP addition significantly increased the thermal stability of the blends. Furthermore, the mechanical tests showed that ABS-g-MAH acted as an efficient compatibilizer for the PC/ABS blends, and the GNP addition improved the Shore D hardness, the elastic modulus, and the maximum tensile strength of all compositions. Besides, it was observed an overlapping effect of the GNP and ABS-g-MAH addition on the mechanical properties of the blend. The addition of 3 wt% GNP to the PC/ABS (85/15) blend also doubled the elongation at break of the material. Furthermore, these contents resulted in a slight increase of the electromagnetic waves attenuation of 1-2 dB associated to electromagnetic waves reflection. (AU)

• Processo FAPESP: 19/11130-9 - Desenvolvimento de nanocompósitos híbridos de grafeno e MWCNT em blendas de PC/ABS para carcaça de componentes eletrônicos
• Beneficiário: Erick Gabriel Ribeiro dos Anjos
• Modalidade de apoio: Bolsas no Brasil - Mestrado