Thermoplastic elastomers (TPEs) (TPO and TPV) based poly(vinylidene fluoride) and epoxidized natural rubber having epoxide group 50 mol% [called ENR-50] blends have been prepared by melt mixing process at different blend ratio. The incorporation of barium titanate (BaTiO3) or BT particles into polymer are widely studied to enhance, in particular, permittivity of materials due to their high permittivity and low dielectric loss factor. The dynamic mechanical properties, dielectric analysis and morphological properties of TPEs were investigated. From temperature dependence, the both TPO and TPV showed two relaxations : αa and α relaxations of PVDF and ENR-50, related to segmental motion in amorphous phase of PVDF and ENR-50, respectively. Their evolutions will be studied as function of the composition and morphology of the different materials. In the case of TPO, the phase structure of 80/20 PVDF/ENR-50 exhibited dispersed phase of ENR-50 in PVDF continuous phase while 50/50 PVDF/ENR-50 showed co-continuous phase structure. The incorporation of barium titanate particles into PVDF/ENR-50 blends affected to physical properties and morphological properties. In 80/20 blends, the BT particles were localized at interface between PVDF and ENR-50 while in 50/50 PVDF/ENR-50 blend, BT particles move to ENR-50 phase leading to change the morphology from co-continuous morphology to dispersed phase/matrix morphology so changing also the properties. Barium titanate particles can be blocked by using dynamic vulcanization process and it will be located at interface of the two phases to act as filler for functionnality or compatibilizer. In general, the filled TPO and TPV at blend ratio 80/20 PVDF/ENR-50 blends showed higher storage modulus and permittivity than that of 50/50 blends due to higher content of polar PVDF.