Deformation reversibility enhancement of thermoplastic vulcanizates based on high density polyethylene and ethylene-propylene-diene terpolymer

► Residual deformation of HDPE crystals led to the permanent deformation of TPVs. ► Deformation reversibility of HDPE/EPDM TPVs was promoted by incorporation of POE. ► Elastic modulus of HDPE/EPDM TPVs decreased with increasing POE dosage.