Static synthesis method of aniline-sulfoacid aniline copolymer nano-fiber

A technology of aniline aniline sulfonate and aniline sulfonate, which is applied in the field of preparation of functional polymer nanomaterials, can solve problems such as complicated post-processing procedures, solvent pollution of the environment, and difficulty in mass production, and achieves good shape controllability, simplified Synthetic process, the effect of uniform size

Inactive Publication Date: 2010-06-02
FUZHOU UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome and solve the disadvantages and problems of existing synthetic methods for preparing conductive polyaniline nanofibers, such as the need for additional templates, complicated post-treatment procedures, low yields of polymers, environmental pollution by solvents used, and difficulty in mass production. , the study provides a method for the synthesis of conductive polyaniline nanofibers with no pollution, simple operation and high polymerization yield. This method is a method for preparing conductive polyaniline nanofibers without external templates.

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  • Static synthesis method of aniline-sulfoacid aniline copolymer nano-fiber
  • Static synthesis method of aniline-sulfoacid aniline copolymer nano-fiber
  • Static synthesis method of aniline-sulfoacid aniline copolymer nano-fiber

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preparation example Construction

[0012] The concrete steps of preparation method are:

[0013] (1) Preparation of monomer solution: Add monomer aniline and sulfonic acid aniline derivative monomer into the reaction medium solution, stir to make it fully dissolved to form a monomer solution, and then put it in a reaction water bath to keep the temperature to the reaction temperature. The reaction temperature is 0 to 30°C;

[0014] (2) Preparation of oxidant solution: add oxidant to the same reaction medium solution (same concentration and same reaction medium) as in step (1), stir to make it fully dissolve to form oxidant solution, and then put it in a reaction water bath to keep the temperature to the reaction temperature , the reaction temperature is 0 to 30°C;

[0015] (3) mixed solution, polymerization reaction: adding the oxidant solution of the step (2) dropwise into the monomer solution of the step (1) to initiate the polymerization reaction;

[0016] (4) Continue the reaction: after the oxidant is ad...

Embodiment 1

[0031] Weigh 1mmol of o-methoxy-5-sulfonic acid aniline, put it in a dry and clean beaker, add 1.0mol / L HCl aqueous solution, stir to dissolve it fully, then add 9mmol of aniline to the above solution, and place in an ice-water bath at 0°C Stir for 0.5h to obtain a monomer mixture. Another 10 mmol of ammonium persulfate was weighed and dissolved in 1.0 mol / L HCl aqueous solution, stirred in an ice-water bath at 0°C for 0.5 h until completely dissolved, and a colorless transparent solution was obtained. Add the ammonium persulfate aqueous solution dropwise to the monomer mixture above at a rate of 1 drop per second under static conditions. After the dropwise addition, the reaction was continued until 24h. After the reaction, 2mL of the reaction solution was taken and washed by centrifugation, and the sample was used for polymer morphology testing. The obtained copolymer nanofibers had a diameter of about 75-95nm and a length of 200-950nm. Such as figure 1shown. The remainin...

Embodiment 2

[0033] Weigh 1 mmol of aniline o-sulfonic acid, put it in a dry and clean beaker, add 1.0 mol / L HCl aqueous solution, stir to dissolve it fully, then add 9 mmol of aniline to the above solution, and stir in an ice-water bath at 30°C for 0.5 h to obtain Monomer mixture. Another weighed 5 mmol of ammonium persulfate was dissolved in 1.0 mol / L HCl aqueous solution, stirred in an ice-water bath at 0°C for 0.5 h until completely dissolved, and a colorless transparent solution was obtained. Add the ammonium persulfate aqueous solution dropwise to the monomer mixture above at a rate of 1 drop per second under static conditions. After the dropwise addition, the reaction was continued to 72h. After the reaction, 2mL of the reaction liquid was taken and washed by centrifugation, and the sample was used for polymer morphology testing. The obtained copolymer nanofibers had a diameter of about 30-55nm and a length of 200nm-1.6 microns. Such as figure 2 shown. The remaining reaction so...

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Abstract

The invention provides a static synthesis method of aniline-sulfoacid aniline copolymer nano-fiber, belonging to the technical field of conducting polymer material. The invention solves the problems that the traditional polymerization method of preparing the conducting polyaniline nano-fiber needs an additional template, has complicated after-treatment processes, pollutes the environment by the used solvent, produce less polymers, is not suitable for mass production, and the like. In the invention, the aniline and the sulfoacid aniline are used as monomers, and the static chemical oxidation polymerization implementation method is used for preparing the polyaniline nano-fiber. The method can be used for preparing the polyaniline nano-fiber which is 30-95nm in diameter and 1.6 micrometers in length. The method of the invention has the characteristics of simple operation, high yield and low cost, belongs to the aqueous system and does not relate to organic solvents, is an environment-friendly method of synthesizing the polyaniline nano-fiber, and provides a new way for synthesizing the polyaniline nano-fiber.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional polymer nanomaterials, and more specifically relates to a synthesis method of aniline-aniline sulfonate copolymer nanofibers. Background technique [0002] Conductive polyaniline nanofibers have excellent characteristics such as high electrical conductivity, good environmental stability, large specific surface area, large electrical activity, and good redox properties, making them widely used in sensors, supercapacitors, energy storage materials, secondary batteries, and electronic devices. and other fields have broad application prospects. The method for preparing polyaniline nanofibers has electrospinning method (Kahol P.K.; PintoN.J.Synth.Met.2004,140,269.Aussawasathien D.; Dong J.H.; , 37.He C.; Tan Y.W.; Li Y.F.J.Appl.Polym.Sci.2003, 87, 1537.), template synthesis (Martin C.R.Science 1994, 266, 1961.) and template-free synthesis, such as interfacial polymerization (Virji S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02
Inventor 吕秋丰
Owner FUZHOU UNIV
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