Enhanced piezoelectric performance of core–shell structured PVDF/PC nanofiber films via electrospinning.

• PC with good compatibility with PVDF is introduced into each fiber in the form of a fiber core. • The piezoelectric properties of all-organic piezoelectric polymers can be improved while retaining high flexibility. • The PPC-2 fiber membrane has the best piezoelectric properties. In this investigation, we report the synthesis of a novel core–shell structured organic composite piezoelectric material through the application of coaxial electrospinning technology. This approach not only markedly enhances the piezoelectric properties but also preserves the inherent flexibility of the underlying piezoelectric polymer. Specifically, the incorporation of a non-piezoelectric polymer core (PC) within the PVDF nanofibers resulted in an increase in the piezoelectric coefficient (d 33) from 8 pC/N for pristine PVDF to 11 pC/N, reflecting an approximate 37.5% enhancement. Our findings represent a substantial advancement in the field of all-organic piezoelectric composite material development. [ABSTRACT FROM AUTHOR]