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Mercapto polyaniline and preparation method thereof

A polyaniline and sulfhydryl technology, applied in the field of polyaniline containing sulfhydryl and its preparation, can solve problems such as sulfhydryl oxidation, and achieve the effect of protecting sulfhydryl from being oxidized

Active Publication Date: 2014-02-12
中科应化(长春)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of polyaniline containing mercapto and its preparation method in order to solve the problem that mercapto is oxidized by oxidant in the process of the existing preparation method of polyaniline containing mercapto

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  • Mercapto polyaniline and preparation method thereof
  • Mercapto polyaniline and preparation method thereof

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[0028] The present invention at first provides a kind of preparation method of polyaniline containing mercapto group, comprises as follows:

[0029] Step 1: Dissolving the aniline monomer containing mercapto group in an organic solvent to obtain a first mixed solution, the concentration of the aniline monomer containing mercapto group in the first mixed solution is 1 to 3 mol / L;

[0030] Step 2: dissolving the oxidant in the aqueous mineral acid solution to obtain a second mixed solution;

[0031] Step 3: Mix the first mixed solution obtained in step 1 with the second mixed solution obtained in step 2, and polymerize the aniline monomer containing mercapto group at the water-organic solvent interface to obtain a reaction product;

[0032] Step 4: The reaction product described in Step 3 is washed, washed with alcohol and dried to obtain polyaniline containing mercapto groups.

[0033] According to the present invention, the "interfacial polymerization" method is used to carry...

Embodiment 1

[0040] 2-aminothiophenol was dissolved in chloroform to obtain the first mixed solution, and the aniline monomer concentration in the first mixed solution was 1mol / L;

[0041] Dissolving ammonium persulfate in hydrochloric acid of 1mol / L to obtain a second mixed solution, the concentration of ammonium persulfate in the second mixed solution is 1mol / L;

[0042]The molar ratio is 2-aminothiophenol:ammonium persulfate=1:1, mix the first mixed solution and the second mixed solution, and place it statically at -10°C for 12 hours to obtain the reaction product;

[0043] The reaction product obtained above was washed with water, methanol and deionized water until the filtrate was colorless; then the product was vacuum-dried at a vacuum degree of 0.6 MPa and a drying temperature of 40° C. for 24 hours to obtain polyaniline containing mercapto groups.

[0044] The polyaniline containing mercapto group prepared in the present embodiment 1 is detected, figure 1 Be the GPC curve figure o...

Embodiment 2

[0046] 3-aminothiophenol was dissolved in carbon tetrachloride to obtain the first mixed solution, and the aniline monomer concentration in the first mixed solution was 3mol / L;

[0047] Sodium persulfate is dissolved in the hydrochloric acid of 1mol / L, obtains the second mixed solution, the concentration of sodium persulfate in the described second mixed solution is 3mol / L;

[0048] The molar ratio is 3-aminothiophenol:sodium persulfate=1:3, mix the first mixed solution and the second mixed solution, and stand still at 10°C for 36 hours to obtain the reaction product;

[0049] The reaction product obtained above was washed with water, methanol and deionized water until the filtrate was colorless, and then the product was vacuum-dried for 36 hours at a vacuum degree of 0.9 MPa and a drying temperature of 50° C. to obtain polyaniline containing mercapto groups.

[0050] The polyaniline containing mercapto group prepared in this embodiment 2 is detected, Figure 4 Be the GPC cur...

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Abstract

The invention provides mercapto polyaniline and a preparation method thereof, and belongs to the field of polyaniline preparation methods. The problem that a mercapto group is oxidized by an oxidant in the process of a conventional preparation method for the mercapto polyaniline is solved. The method comprises the following steps of dissolving mercapto aniline monomers into an organic solvent to obtain a first mixed solution; dissolving the oxidant into an aqueous solution of an inorganic acid to obtain a second mixed solution; mixing the first and second mixed solutions, and polymerizing the mercapto aniline monomers on a water-organic solvent interface to obtain a reaction product; washing, alcohol-washing and drying the reaction product to obtain the mercapto polyaniline. According to the mercapto polyaniline and the preparation method thereof, the mercapto group in the polyaniline obtained by the method can be prevented from being oxidized by the oxidant and oxygen in air in a preparation process, and experimental results show that the mercapto polyaniline has a number average molecular weight of 12,671 to 18,306 daltons and a weight average molecular weight of 17,112 to 20,303 daltons.

Description

technical field [0001] The invention belongs to the field of polyaniline preparation methods, and in particular relates to a polyaniline containing mercapto groups and a preparation method thereof. Background technique [0002] Polyaniline containing mercapto groups is a very promising conductive polymer material. First of all, polyaniline is an excellent conductive polymer with excellent environmental stability and can be used to prepare sensors, batteries, capacitors, antistatic materials, anti-corrosion Materials and other fields have broad application prospects; this kind of mercapto polyaniline material has the characteristics of polyaniline, and mercapto is a kind of active group with special properties such as self-assembly, which makes the material self-assembled. In addition, It can be used as an important electrode material for lithium-sulfur batteries. Secondly, the mercapto groups on its main chain can react with unsaturated double bonds in a "Click" reaction. Th...

Claims

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Application Information

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IPC IPC(8): C08G73/02
Inventor 张红明李颖刘年江李季王献红王佛松
Owner 中科应化(长春)科技有限公司
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