Three-level coaxial electro-spinning method for loading two sheath fluids without spinnability on core fluid

Abstract

The invention relates to a three-level coaxial electro-spinning method for loading two sheath fluids without spinnability on a core fluid. According to the method, spinnability of the polymer core fluid is used as support, functional fluids without spinnability are loaded in an external sheath fluid surrounding manner to serve as an interlayer, pure organic solvents serve as outermost fluids, and a three-level coaxial high-voltage electrostatic spinning process is implemented. The outermost organic solvents can effectively ensure stability and continuous implementation of the three-level coaxial electro-spinning process, and high-quality core sheath structure nano-fiber products can be prepared. The functional fluids without spinnability are effectively led into the three-level coaxial electro-spinning process, and the nano-structure preparation capacity of the process is greatly extended. Besides, the method is effective in single step, prepared nano-fiber core sheath structures are clear, small in nano-fiber diameter, good in linearity and uniform in diameter distribution, and fiber surfaces are smooth. By the method, numerous functional components can be loaded on the polymer nano-fiber surfaces to obtain novel functional nano-fiber products.

Description

technical field [0001] The invention relates to processing of micro-nano materials, in particular to a three-stage coaxial electrospinning method in which a core fluid carries two non-spinnable sheath fluids. Background technique [0002] High-voltage electrospinning technology (electrospinning) is a top-down nano-fabrication technology that overcomes the liquid surface tension and viscoelastic force of the droplet at the tip of the nozzle by applying an electric field force to form a jet. Under the combined action of Coulomb force and surface tension, the atomized liquid jet is bent, stretched, and split at high frequency, and is stretched ten million times within tens of milliseconds. grade fiber. This technology is simple in process, convenient in operation, wide in selection of materials, and strong in controllability. It is considered to be the most likely method to realize the industrial production of continuous nanofibers. The application of this technology to prepar...

AI Technical Summary

Problems solved by technology

[0004] The present invention is aimed at the problem of limited materials when the high-voltage electrospinning technology is used, and proposes a three-stage coaxial electrospinning method in which the core fluid is equipped with two non-spinnable sheath fluids. The spinnability is supported, and the outer ring sheath liquid is equipped with a functional fluid that does not have spinning performance as the middle layer and a pure organic solvent as the outermost fluid, implementing a three-stage coaxial high-voltage electrospinning process

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