Styrene–butadiene–styrene copolymer-compatibilized interfacial-modified graphene oxide with mechanical and electrical properties

Abstract

This article deals with the investigation of electrical and mechanical properties of styrene–butadiene–styrene tri-block copolymer (SBS) nanocomposites containing SBS-grafted graphene oxide (SBS- g-GO) nanofillers dispersed in the SBS matrix through a solution processing method. In order to improve the compatibility of graphene oxide in SBS, graphene oxide was modified by maleic anhydride-grafted SBS to SBS- g-GO. The SBS- g-GO were characterized by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, scanning electron microscopy, and thermogravimetric analysis. The results showed that the SBS molecules were homogeneously bonded onto the surface of the GO, leading to an improvement of the mechanical and electrical properties of SBS/SBS- g-GO composites due to the excellent interfacial adhesion and dispersion of SBS- g-GO in SBS.