Method for constructing non-oriented conductive material through synergistic enhancement of ordered carbon-based nanofibers

Abstract

The invention discloses a method for constructing a non-oriented conductive material by synergetic enhancement of ordered carbon-based nanofibers. The method comprises the following steps: preparing aspinning solution from a polymer and multiwalled carbon nanotubes (MWCNT), preparing an electrostatic spinning nanofiber membrane, after complete drying and volatilizing a solvent, regulating ANI concentration by combining an aniline (ANI) in-situ polymerization method, and preparing a high-molecular polymer / MWCNT / polyaniline (PANI) composite membrane, so as to prepare the non-oriented conductivematerial constructed by the ordered nanofibers. Advantages of high-molecular polymers, advantages of the MWCNT and advantages of the PANI are comprehensively utilized, ordered nanofibers are preparedto construct the non-oriented conductive material, fiber structure transition from nanometer to micrometer is realized, transition from smooth and uniform morphological characteristics to conductiveparticle enrichment polymorphologies is realized, and transition from orientation to a non-oriented porous structure, transition from non-conductivity to conductivity and transition from anisotropy toisotropy have remarkable non-oriented, porous and conductive properties, and are expected to be widely applied to the fields of tissue engineering, intelligent wearing and electronic skin.

Description

technical field [0001] The invention relates to a method for synergistically reinforcing ordered carbon-based nanofibers to construct non-oriented conductive materials. Background technique [0002] Activities such as human sensory and movement are mainly controlled by the transmission of bioelectrical signals in the nervous system. When nerve cells transmit information in the body, they mainly rely on the action potential generated by synapses, that is, the conversion activity of chemical signals and electrical signals. Therefore, in the process of preparing the nerve conduit, endowing it with a certain degree of electrical conductivity has special significance for the adhesion and differentiation of nerve cells and the repair of nerve tissue. [0003] Xu Yaxuan et al. (Xu Y X, Huang Z B, Pu X M, et al.Fabrication of Chitosan / Polypyrrole coated poly(L-lactic acid) / Polycaprolactone aligned fiber films for enhancement of neural cell compatibility and neurite growth[J].CellPr...

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Problems solved by technology

[0004] Polyaniline is a typical conductive polymer with a conjugated electronic system. Compared with polypyrrole, it was applied later in tissue engineering, but it is easier to modify it, such as changing biocompatibility and conductivity ( Yslas E I, Cavallo P, Acevedo D F, et al.Cysteine ​​modified polyaniline films improvebiocompatibility for two cell lines[J].Materials Science and Engineering:C,2015,51:51-56.)

At the same time, PANI has problems such as poor processability, poor hydrophilicity, and lack of cell recognition sites (Khorshidi S, Karkhaneh A.Particle-coated electrospun scaffold: A semi-conductive drug eluted scaffold with layered fiber / particle arrangement[J].Journal Of Biomedical Materials Research Part A,2018,106(12):3248-54.), it needs to be mixed with other materials to improve its performance

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