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A kind of preparation method of nanostructured polyaniline

A nanostructure, polyaniline technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as being unsuitable for large-scale production, difficult to obtain a large number of products, and difficult to achieve regulation, etc. Simple operation, simplified synthesis process, strong controllable effect

Inactive Publication Date: 2018-05-15
DONGHUA UNIV
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  • Abstract
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Problems solved by technology

Chinese patents have prepared polyaniline with different nanostructures by electrochemical methods such as constant potential method [CN1958854A] and unipolar pulse method [CN101942090B]. For laboratory research, not suitable for mass production
However, the polyaniline prepared by this method usually has a variety of nanostructures coexisting, and it is difficult to realize the regulation of a single and uniform nanostructure.

Method used

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  • A kind of preparation method of nanostructured polyaniline
  • A kind of preparation method of nanostructured polyaniline
  • A kind of preparation method of nanostructured polyaniline

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Experimental program
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Effect test

Embodiment 1

[0038] Nanostructured polyaniline was prepared by a one-pot method (see figure 1 ). First weigh 46.565g aniline (0.5mol) and dissolve in 800mL 3.0mol / L ammonia solution, 28.525g ammonium persulfate (0.125mol) dissolve in 200mL 3.0mol / L ammonia solution, then mix the two phases uniformly, React at 60°C for 10 minutes to obtain aniline oligomer solution; add 400mL of hydrochloric acid to adjust the reaction system to strong acidity, and its pH value is 0; weigh 279.39g of aniline (3.0mol) and dissolve it to 50mL6.0mol / L In the camphorsulfonic acid solution, 171.15g ammonium persulfate (0.75mol) is dissolved in the 50mL 6.0mol / L camphorsulfonic acid solution, then successively monomer and monomer initiator solution are added in the above-mentioned aniline oligomer solution, in React at 60°C for 0.5h; after the reaction, the product is washed several times, filtered with suction, and finally dried in vacuum at low temperature. Observation by scanning electron microscope, prepar...

Embodiment 2

[0040] First weigh 0.093g aniline (0.001mol) and dissolve it in 800mL of 3.0mol / L ammonia solution, and dissolve 0.228g ammonium persulfate (0.001mol) into 200mL of 3.0mol / L ammonia solution, then mix the two phases uniformly, React for 6 hours under ice-water bath conditions to obtain aniline oligomer solution; add 330mL hydrochloric acid to adjust the reaction system to moderately strong acidity, and the pH value is about 3.0; weigh 13.98g aniline (0.15mol) and dissolve it to 100mL 6.0mol / In L acetic acid solution, 486.54g ferric chloride (1.8mol) is dissolved in 70mL 6.0mol / L acetic acid solution, then successively monomer and monomer initiator solution are added in the aniline oligomer solution, under ice water bath condition The reaction was carried out for 24 hours; after the reaction, the product was washed several times, filtered with suction, and finally dried in vacuum at low temperature. Observation by scanning electron microscope, prepared polyaniline is sheet str...

Embodiment 3

[0042] First weighing 15.832g aniline (0.17mol) is dissolved in the ammonia solution of 800mL 0.1mol / L, and 556.060g ferric sulfate (2.0mol) is dissolved in the ammonia solution of 200mL 0.1mol / L, then the two phases are uniformly mixed, in React at 60°C for 10 minutes to obtain aniline oligomer solution; add 60mL of hydrochloric acid to adjust the reaction system to weak acidity, and the pH value is about 4.0; weigh 279.39g of aniline (3.0mol) and dissolve it in 100mL of 0.1mol / L sulfuric acid / sulfosalicylic acid solution, 300mL30% hydrogen peroxide (3.0mol) was dissolved in 40mL 0.1mol / L sulfuric acid / sulfosalicylic acid solution, and then the monomer and monomer initiator solution were added to the aniline The oligomer solution was reacted for 24 hours in an ice-water bath; after the reaction, the product was washed several times, filtered with suction, and finally dried in vacuum at low temperature. Observed by scanning electron microscope, the prepared polyaniline is a p...

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Abstract

The invention relates to a preparation method of nano-structure polyaniline. The method comprises the following steps: dissolving an aniline monomer and a monomer initiator into an alkali liquor respectively and carrying out mixing and reacting to obtain an aniline oligomer; adding a strong acid to the aniline oligomer, adjusting the pH to 0-7, and then sequentially adding acid-doped solutions of the aniline monomer and the monomer initiator, and reacting in an ice-water bath for 0.5-24 hours; and carrying out washing, suction filtration and drying to obtain the nano-structure polyaniline. By the method provided by the invention, the intermediate processing link of the aniline oligomer is avoided; a template and other auxiliary equipment are not needed; the overall reaction is finished in a water phase; the operation is simple and convenient; the controllability is high; and the method is suitable for large-scale production. The prepared polyaniline can have wide application potential in the fields of an energy storage material, a sensing material, a wave-absorbing material, an adsorption material, a nano additive and the like.

Description

technical field [0001] The invention belongs to the field of polyaniline preparation, in particular to a preparation method of nanostructure polyaniline. Background technique [0002] Polyaniline is a very important conductive polymer material, which has the advantages of easy availability of raw materials, low price, diverse structures and environmental friendliness. By controlling different doping levels, polyaniline can realize the transformation from conductor-semiconductor-insulator. Nanostructured polyaniline has a high specific surface area, which can greatly increase the contact area between polyaniline and other materials, and endow polyaniline materials with new characteristics. In addition, polyaniline with different nanostructures, such as nanofibers, nanotubes, nanowires, nanosheets, sea urchins or petals, etc., can bring some new structural properties, which broaden the application of polyaniline materials in supercapacitors, electrical Applications in cataly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02B82Y30/00
CPCB82Y30/00C08G73/0266
Inventor 秦宗益李涛沈玥莹钱鹏飞靳丹丹董姝
Owner DONGHUA UNIV
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