Poly (vinylidene fluoride) piezoelectric nanofibers fabricated by non-uniform field electrospinning Online publication date: Tue, 08-Mar-2016
by Dezhi Wu; Shaohua Huang; Zhiming Xiao; Lingke Yu; Lingyun Wang; Daoheng Sun; Liwei Lin
International Journal of Nanomanufacturing (IJNM), Vol. 11, No. 5/6, 2015
Abstract: Non-uniform field electrospinning, in which parallel top-bottom configuration of two different materials worked as collector to change electric field, is utilised to fabricate aligned poly (vinylidene fluoride) (PVDF) fibres. The electrospun PVDF fibres with average diameters from 440 to 475 nm fabricated from the substrate configuration of polyethylene terephthalate (PET) and polydimethylsiloxane (PDMS) are chosen as air pressure sensing elements. The effect of PETs thickness and electrospinning time on the piezoelectric properties and morphology of PVDF fibres was studied. The results show that with increasing of the PETs thickness, the arrangement of PVDF fibres becomes more oriented and the piezoelectric properties are greatly improved. But, the electrospinning time cannot enhance their piezoelectric effect. The pressure sensor with such PVDF nanofibers has sensibility of 5.812 mV kPa−1 and the electrical output is about 100 mV at 0.025 MPa air pressure.
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