Enhanced piezoelectric performance of rare earth complex-doped sandwich-structured electrospun multifunctional composite nanofiber membranes
writer：8. Guimao Fu, Yongqing He, Yongri Liang, Shifeng He, Rui Xue, Yibo Wu, Weiyong Yu, and Qisong Shi*
keywords：piezoelectric performance
source：期刊
specific source：J Mater Sci: Mater Electron (2022), 3, 22183–22195
Issue time：2022年
In this paper, the electrospinning of Polyvinylidene hexafluoropropylene
(P(VDF-HFP)) composite nanofibers was performed by adding rare earth
complexes Eu(TTA)3(TPPO)2 and FeCl36H2O as fillers. The effects of
Eu(TTA)3(TPPO)2 and FeCl36H2O fillers on the morphology, crystal structure,
thermal properties, and fluorescence properties of P(VDF-HFP) composite
nanofibers were investigated by the scanning electron microscopy, Fourier
transform infrared spectroscopy, atomic force microscopy, X-ray diffraction,
and differential scanning calorimetry and fluorescence. The mechanical properties, sensitivity, ferroelectric properties, and piezoelectric output of monolayer
and sandwich structure composite nanofiber membranes used as sensors were
studied. The results show that the synergistic effect of double fillers increases
the content of b-phase with piezoelectric properties by nearly 20%, reaching
96.9%. The sandwich structure of the PU/P(VDF-HFP)-Eu(TTA)3(TPPO)2-
FeCl36H2O/PU flexible sensor has high sensitivity (* 0.29 kPa- 1
), high
piezoelectric output (* 3.7 V), high strain (* 230%), and fluorescence characteristics. It is expected to be applied in wearable flexible sensors, photoelectric
devices, and other fields