A continuous preparation device and method for polyaniline/polypyrrole composite nanofibers

Abstract

The invention provides a preparation device and method for polyaniline / polypyrrole composite nanofibers. The aniline monomer solution and the initiator solution containing a dopant are respectively injected into the first container and the second container, and the flow polymerization in the first reaction tube at a high speed to generate polyaniline nanofibers; dissolve the pyrrole monomer and the initiator in the third container and the fourth container containing the dopant respectively, and continuously inject the two solutions into the first container at a certain speed. In the second reaction tube, when flowing through the end of the first reaction tube, it is in contact with polyaniline nanofibers, and oxidative polymerization is carried out on its surface; polypyrrole is continuously coated on the surface of polyaniline nanofibers, and finally collected in a collection container; washing , suction filtration and drying to obtain polyaniline / polypyrrole composite nanofibers. The invention has simple operation, controllable reaction, no need to use any organic solvent and template, high repeatability, and the whole polymerization process is completed in the reaction tube, which greatly improves the production efficiency.

Description

technical field [0001] The invention belongs to the field of preparation of nanocomposite materials, and in particular relates to a preparation device and method for polyaniline / polypyrrole composite nanofibers. Background technique [0002] The development and use of energy has always been the core theme of human development. In the context of pursuing efficient use of energy and developing stable and efficient energy storage technologies, the advent of supercapacitors has great practical significance. Compared with other energy storage devices, supercapacitors have the advantages of fast charge and discharge capability, long cycle stability, safe performance and environmental friendliness. As a key component of supercapacitors, electrode materials are important indicators that determine their performance. Among them, polymer electrode materials have received extensive attention due to their own characteristics. Studies have shown that the energy storage behavior of condu...

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Problems solved by technology

[0004] However, these current preparation methods have certain limitations. For example, the electrochemical polymerization method needs the help of instruments and equipment, and the yield is mainly limited by the electrode area; most of the chemical oxidation methods use the combination of the template method and the in-situ polymerization method to prepare Polyaniline / polypyrrole composite nanofibers often need to be prepared step by step, the preparation process is relatively complicated, and a cumbersome post-treatment process is required to remove the template, which weakens the potential for large-scale application; although some researchers use the rapid mixing method instead of the template method to synthesize polymers. Aniline nanofiber seeds, but the rapid mixing method is difficult to control the polymerization process and the monomer concentration is not high, so the quality of the final prepared polyaniline / polypyrrole nanofibers is not high and the yield is low

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