Room-Temperature Ferromagnetic Sr₃YCo₄O_10+δ and Carbon Black-Reinforced Polyvinylidenefluoride Composites toward High-Performance Electromagnetic Interference Shielding.

ABSTRACT: In this study, we fabricated composites of conducting carbon black (CB), room-temperature ferromagnetic Sr₃YCo₄O_10+δ (SYCO) and polyvinylidenefluoride (PVDF) by the solution mixing and coagulation method for the first time. During the nucleation process of PVDF, the presence of SYCO and CB individually facilitates the crystallization of polar β and semipolar γ phases along with the nonpolar α phase in PVDF. The dc electrical conductivity of PVDF raised from 1.54 × 10^-8 to 9.97 S/m with the addition of 30 wt % of CB, and it is nearly constant with respect to the SYCO content. The PVDF/CB/SYCO composites (PCS) possess high permittivity and its variation is in accordance with the content of polar phases in PVDF. Moreover, the complex permittivity an

SUBMITTER: Lalan V 

PROVIDER: S-EPMC6648688 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature