Experimental Investigation of Piezoelectricity of Near Field Electrospun PVDF Nanofibers
Abstract: In this paper, the
roles of mechanical stretch and electric poling on phase transition and piezoelectric
response of Poly (vinylidene fluoride) (PVDF) nanofibers during Near Field
Electrospinning(NFES) are investigated. By adjusting applied voltage or speed
of motion stage while keeping other parameters constant, PVDF nanofibers
enduring different electric poling and mechanical stretch areprepared. The
average fiber diameter is observed by scanning electron microscope (SEM). The
crystalstructure of the fiber is analyzed through Fourier Transform Infrared
spectrum (FTIR) and X-Ray diffraction (XRD), and the β phase responsible for
the piezoelectricity is calculated for the quantitative analysis. The piezoelectric
response is investigated utilizing a home-made testing system. The experimental
results show that the piezoelectric response increases although the β phase
content remains almost the same under stronger electric poling. On the
contrary, the piezoelectric response remains almost the same while the β phase
content increases under stronger mechanical stretch. This indicates that
electric poling resulted from electric field is the main reason for the
piezoelectric performance of PVDF.
Author: Siyuan Ma, Qingqiang
Sun, Yuanzhe Su, Ronghui Chen, Lingyun Wang
Journal Code: jptkomputergg160084
