Materials Chemistry and Physics, Vol.171, 359-366, 2016
Poly(p-phenylene)/crosslinked poly(epsilon-caprolactone) blends as highly electroactive materials
Iron (III) chloride (FeCl3) doped poly(p-phenylene) (PPP) and crosslinked poly(epsilon-caprolactone) (cPCL), using benzoyl peroxide (BPO) as a crosslinking agent, was blended as an electroactive material. The electromechanical properties of the poly(epsilon-caprolactone) (PCL) films and the blends under the effects of crosslinking ratio and concentration of embedded PPP were investigated. The pristine 3 wt% of BPO cPCL film exhibited the highest storage modulus response and storage modulus sensitivity, with the latter value was as high as four. In the case of the PPP/PCL blends, the storage modulus response and storage modulus sensitivity diminished first with increasing PPP concentration upto 0.01 vol%, and then increased with increasing PPP concentration from 0.05 vol% to 1 vol%. PPP particles thus acted as a filler and enhanced the electrostrictive interaction. In the deflection experiment, both of the pure cPCL films and PPP/PCL blends always bended towards the positive electrode as a result of induced dipole moments and the PPP counter ion. Moreover, the bending angle and dielectrophoresis force on the films and blends increased monotonically with increasing electric field. (C) 2016 Elsevier B.V. All rights reserved.