纺织工程学报2026，Vol.4Issue(4)：58-67,10.DOI:10.20150/j.cnki.fzgcxb.2026.04.005
弯曲结构PVDF纳米纤维膜的构筑及其自驱动压电传感应用
Construction of a curved PVDF nanofiber membrane and its application in self-powered piezoelectric sensing
摘要
Abstract
Poly(vinylidene fluoride)(PVDF)has attracted extensive attention in the realm of flexible wearable electron-ics and self-powered sensor devices due to its excellent β-phase piezoelectric properties and favorable machinability.However,conventional electrospun PVDF nanofiber membranes exhibit uniform internal stress distribution,leading to limited piezoelectric response under low-load conditions.To address this,a structural regulation strategy involving sol-vent post-treatment is proposed to induce in-situ bending of PVDF nanofibers.After acetone post-treatment,the PVDF nanofiber membrane undergoes controllable plastic deformation below the glass transition temperature,constructing a periodic bending structure with a radius of 2～4 μm,and achieving curvature fixation through rapid solvent evaporation.Under external mechanical stimulation,the bending structure produces a significant local stress concentration effect,ele-vating the stress at the maximum curvature to 3～4 times that of straight nanofibers,thereby effectively amplifying the β-phase dipole moment orientation change and piezoelectric response.Piezoelectric nanogenerators constructed based on this curved PVDF nanofiber membrane exhibit excellent sensing sensitivity and cycle durability under low-frequency hu-man motion.This method,which does not require the introduction of inorganic fillers or high-temperature processing,is simple and scalable,providing a new structural regulation approach for the design of high-performance flexible piezo-electric materials and self-powered sensors.关键词
静电纺丝/PVDF纳米纤维/结构调控/压电纳米发电机/自驱动传感Key words
electrospinning/PVDF nanofibers/structural regulation/piezoelectric nanogenerator/self-powered sensing分类
轻工纺织引用本文复制引用
张文馨,王黎明..弯曲结构PVDF纳米纤维膜的构筑及其自驱动压电传感应用[J].纺织工程学报,2026,4(4):58-67,10.基金项目
东华大学研究生创新基金(CUSF-DH-D-2020016) （CUSF-DH-D-2020016）
