纺丝电压对静电纺PVDF纤维膜压电效应的影响

摘要

纺丝电压是影响静电纺聚偏氟乙烯( PVDF)纤维膜β相生成和压电效应的重要因素之一。目前不同文献中对电压影响的研究结果存在不同观点。采用静电纺丝方法,在不同电压(14．0~24．0 kV)条件下制备了PVDF纤维膜,测试了不同电压下PVDF纤维膜的压电响应,利用 FTIR和 XRD方法表征了不同电压下PVDF纤维膜的β相含量。结果表明,在给定的纺丝电压范围内,PVDF纤维膜的压电响应输出和β相含量均存在最大值。通过对比分析其他研究结果,对影响试验结果的因素展开了讨论。%Spinning voltage is one of important factors which influence on beta phase content and piezoelectric effect of electrostatic spinning poly ( vinylidene fluoride ) nanofiber membranes. At present, there is a big debate about the relationship between spinning voltage and piezoelectric effect. A series of PVDF nanometer fiber membranes were made by electrostatic spinning method under different voltages (14. 0~24. 0 kV), and piezoelectric response of nanofiber membranes were tested through a homemade test platform. Then, the beta phase content of PVDF fiber membranes was characterized by FTIR and XRD methods. The results showed that both piezoelectric output signals and beta phase content of PVDF fiber membranes had a maximum value in given range of spinning voltages. The effect factors on experimental results were discussed through comparison and analysis to other research results.