Enhanced electromechanical properties of natural rubber using mussel-inspired modification of calcium titanate particles with supercapacitive property

Dielectric elastomer actuator (DEA) has broad application prospects because of their excellent properties. However, the need for high operating electric field limits practical application. The natural rubber (NR) composite with properties was obtained through addition high-dielectric-constant calcium titanate (CCTO) particles modification by deposition poly(catechol/polyamine) (PCPA) and graft silane γ-(2,3-expoxypropoxy)-propytrimethoxysilane (KH560). interaction polarization were significantly enhanced at interface CCTO NR matrix due to participation epoxy groups KH560 in vulcanization reaction. In this paper, 50 parts per hundred (phr) CCTO-PCPA-KH560/NR revealed largest actuated strain (11.38%), which ∼4.48 times higher than that pure (2.54%). And reinforced mechanical, dielectric, electromechanical summary, proposed approach is feasible, low cost, helpful wide high-performance DEA.