Piezoresistive Behavior of a Carbon Nanotube/Synthetic Rubber-based Nanocomposite

초록

Carbon nanotubes (CNTs) offer potential applications as additive to various structural materials because of their many attractive physical properties. For example, CNTs can make a conductive network with a doping level as low as 0.1 wt% of CNTs because CNTs can be constructed with high aspect ratio (> 500). CNTs also exhibit interesting electromechanical properties. When subject to stress, the electrical resistivity can be changed in response to the different stress level, which is often called piezoresistive effect. Although CNT/polymer composites have recently been studied for stress/strain sensors based on piezoresistive effect of CNTs over the last decades, no research have explored on the piezoresistive effect of a styrene-butadiene rubber (SBR), one of the main synthetic rubber used in the tire tread of modern vehicles. The objective of this research is to provide preliminary knowledge on the fabrication of CNT/SBR-based nanocomposites, and their physical/mechanical properties