▎ 摘　　要

NOVELTY - Self-driving piezoelectric response control surface hydrophilic fiber film comprises a polythiophene micro-sphere coating comprising a base film and an anion-containing dopant. The base film is a polyvinylidene fluoride (PVDF) micro-nano fiber film doped with silver nitrate, ferric chloride hexahydrate, or nanographene. The anion doping agent is anhydrous aluminum perchlorate, sodium dodecylbenzene sulfonate, or sodium p-benzenesulfonate. The porosity of the polythiophene micro-sphere coating containing anion doping agent is 80-90 %. The piezoelectric signal peak voltage of the substrate film is 0.5-3 volts (V). The threshold value of the self-driving piezoelectric response adjusting surface hydrophilic fiber film surface wettability conversion is 0.05-0.5 V. USE - Self-driven piezoelectric response control surface hydrophilic fiber film. ADVANTAGE - The method enables to prepare the self-driven piezoelectric response control surface hydrophilic fiber film which has generates voltage to realize the wettability of the fiber film surface. DETAILED DESCRIPTION - An INDEPENDENT CLAIM Is included for a method for preparing the self-driven piezoelectric response control surface hydrophilic fiber film, which involves: (A) dissolving the polyvinylidene fluoride and AgNO3, FeCl3x 6H2O or nanographene in the solvent I, mixing uniformly to obtain the electrostatic spinning solution; (B) cooresponding to electrostatic spinning solution undergoes electrostatic spinning to obtain the electrospinning fiber film, vacuum drying the film to obtain PVDF micro-nano fiber film; (C) dissolving the anionic dopant and polythiophene in solvent II, mixing uniformly to obtain polythiophene high polymer solution, the anionic dopant is anhydrous aluminum perchlorate, sodium dodecylbenzene sulfonate or sodium p-benzene sulfonate; and (D) spraying the polythiophene polymer solution on the PVDF micro-nano fiber film by electrostatic spraying method and forming micro-sphere coating, vacuum drying to obtain the self-driving piezoelectric response control surface hydrophilic fiber film.