Influence of graphene nanoplates and<scp>ABS‐<i>g</i>‐MAH</scp>on the thermal, mechanical, and electromagnetic properties of<scp>PC</scp>/<scp>ABS</scp>blend
Erick Gabriel Ribeiro dos Anjos, Leonardo de Souza Vieira, Juliano Marini, Tayra Rodrigues Brazil, Newton Adriano Santos Gomes, Mirabel Cerqueira Rezende, Fábio Roberto Passador
Abstract
Abstract 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.