Polyvinylidene fluoride nano fibrous membrane and preparation method thereof

Abstract

The invention relates to a polyvinylidene fluoride nano fibrous membrane and a preparation method thereof. The preparation method comprises the following steps: S1, providing polyvinylidene fluoride,dissolving polyvinylidene fluoride into a mixed solvent of N-N dimethyl formamide and acetone, and performing water-bath, heating and stirring to obtain a uniform transparent solution; S2, adding anhydrous zinc acetate into the transparent solution to obtain a mixture, stirring the mixture to obtain a uniformly-dispersed mixed solution; S3, carrying out electrostatic spinning on the mixed solution, carrying out heat treatment to obtain the polyvinylidene fluoride nano fibrous membrane carried with zinc oxide nano-particles. Compared with the prior art, the preparation method disclosed by the invention has the advantages that a film is formed in one step, an operation is simple, the practicability is strong, high-temperature calcination is not needed, and the cost is lower; the polyvinylidene fluoride nano fibrous membrane carried with the zinc oxide nano-particles, having excellent performance, can be effectively prepared.

Description

technical field [0001] The invention relates to a polyvinylidene fluoride nanofiber membrane and a preparation method thereof, belonging to the field of nanofiber composite materials. Background technique [0002] ZnO nanocomposites have excellent optical and electrical properties, and are widely used in photocatalysis, sensors, and conductive electrodes. Compared with pure ZnO nanoparticles, highly oriented ZnO nanocomposites have larger aspect ratio and specific surface area, so they are widely used in many fields. [0003] In the vapor phase method of preparing highly oriented zinc oxide nanocomposites, such as vapor transport deposition, thermal evaporation, chemical vapor deposition, etc., generally require high-demand substrate materials, and need to react under high pressure or high temperature conditions; electrospinning Although ZnO nanocomposite fibers can be prepared, it is generally necessary to calcine at high temperature to remove the organic template, which s...

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Problems solved by technology

[0003] In the vapor phase method of preparing highly oriented zinc oxide nanocomposites, such as vapor transport deposition, thermal evaporation, chemical vapor deposition, etc., generally require high-demand substrate materials, and need to react under high pressure or high temperature conditions; electrospinning Although zinc oxide nanocomposite fibers can be prepared, it is generally necessary to calcine at high temperature to remove the organic template, which seriously restricts the large-scale production of highly oriented zinc oxide nanomaterials

At present, organic nanofibers containing zinc salts are mainly prepared by electrospinning as a template or electrospun organic fibers are coated, and then calcined at high temperature or treated at low temperature to obtain inorganic zinc oxide nanocomposite fibers, or directly disperse zinc oxide nanoparticles. Organic fibers loaded with zinc oxide nanoparticles are obtained in an electrospinning solution. This preparation method cannot form a film in one step, and the operation is complicated and the cost is high.

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