Thermal and electrical dual‐triggered shape memory Eucommia ulmoides gum derived from renewable resources

Abstract Thermal and electrical dual‐triggered shape memory composites were prepared by introducing multi‐walled carbon nanotubes (CNTs) into the Eucommia ulmoides gum (EUG) matrix. The morphology of the composites was investigated by scanning electron microscope, and the CNTs exhibited good dispersion in the EUG matrix. The well‐dispersed CNTs built a conductive network in the EUG matrix, generating electric current induced heat. The composites showed the shape memory effect upon stimulation by heat and electricity. The composites exhibited increased shape recovery speed with the increase in CNTs content and applied voltage. Furthermore, the composites recovered to 90% of their initial length within 36 V (AC), which is safe for humans. This work provides a feasible material with dual‐triggered shape memory characteristics, which can find potential applications in medicine devices.