Method for preparing ordered coaxial structural micro and nano fibers

Abstract

The invention belongs to the technical field of micro and nano fibers prepared by electrostatic spinning, and relates to a method for preparing a conductive polymer micro and nano fiber array of an ordered coaxial structure by adopting a rotary disk collecting electrostatic spinning technology, in particular to a method for preparing ordered coaxial structural micro and nano fibers. The method comprises the following steps of: covering a flexible plastic substrate with a rectangular slit shape on a collector of a rotary disk type electrostatic spinning device, and obtaining ordered micro and nano fibers by using transverse relative motion of the collector and high-speed moving electro-spun fibers; and treating the ordered micro and nano fibers serving as a template by a chemical wet method, wrapping a layer of conductive polymer on the surface of the fiber template by in-situ polymerization, and thus obtaining the conductive polymer micro and nano composite fibers of the ordered coaxial structure. The method is high in ordered arrangement degree of the fibers, simple in process, reliable in principle and easy to operate; and the fibers have high electric conductivity and wide application range.

Description

Technical field: [0001] The invention belongs to the technical field of preparing micro-nano fibers by electrospinning, and relates to a method for preparing an array of coaxial conductive polymer (such as conductive polyaniline) micro-nano fibers arranged in an orderly arrangement by a rotating disk collecting type electrospinning technology. In particular, it is a method for preparing orderly arranged coaxial micro-nano fibers. Background technique: [0002] In recent years, nanomaterials such as one-dimensional nanofibers, nanowires, nanotubes, nanospheres, and nanorods have become one of the hotspots in nanotechnology research. Electrospinning is an effective method to prepare one-dimensional micro-nanofibers simply and efficiently. Compared with template method, chemical vapor deposition method, self-assembly method and other methods, it is easy to operate and widely applicable, and can prepare organic polymers. , metals, semiconductor ceramics, biological macromolecul...

AI Technical Summary

Problems solved by technology

Conductive polymer (such as PANI and PPY) composite fibers can be prepared by traditional electrospinning technology, but in order to be able to spin fibers, a large amount of non-conductive polymer components (such as polyethylene oxide PEO) must be added to the spinning solution to adjust Therefore, the conductive polymer composite fiber prepared by this process has the disadvantages of low proportion of conductive polymer and low conductivity.

In addition, the electrospun conductive polymer composite fibers that have been reported at home and abroad are basically arranged randomly, which further reduces the conductivity of the fiber membrane and limits the application of composite fibers in some technical fields.

Images