Biocatalysis preparation method of high-conductivity poly(3,4-ethylenedioxythiophene)/lignosulfonic acid dispersion liquid

A technology of ethylenedioxythiophene and ligninsulfonic acid, which is applied in the field of conductive polymers, can solve the problems of difficult PEDOT, hindering the application range, and difficult processing, and achieves the effects of high catalytic efficiency, low price, and strong processability

Inactive Publication Date: 2018-01-23
刘营营
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the patent CN102516784A utilizes lignin sulfonic acid to prepare water-dispersible PEDOT/LS conductive compound, it solves the problem that PEDOT is insoluble and infusible and causes process

Method used

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  • Biocatalysis preparation method of high-conductivity poly(3,4-ethylenedioxythiophene)/lignosulfonic acid dispersion liquid

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Experimental program
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Effect test

Embodiment 1

[0032] Weigh lignosulfonic acid, 3,4-ethylenedioxythiophene, sodium tartrate and sodium oxalate according to the mass ratio of 2.8:1:2:2.5 and add high-purity water to form a mixed solution with a solid content of 2.5%. In a water bath environment at 25°C, stir at 6000rpm for 30min, add acetic acid-sodium acetate buffer solution to adjust the pH of the mixture to 6, then add horseradish peroxidase while stirring, and then slowly add hydrogen peroxide solution dropwise , continue to stir and react for 24 hours to obtain a primary reaction solution; weigh the above primary reaction solution, 3,4-ethylenedioxythiophene, sodium tartrate and sodium oxalate in a mass ratio of 1.5:1:2:2.5 and add high-purity water, Make a mixed solution with a solid content of 2%, place it in a water bath environment at 20°C, stir at 7000rpm for 30min, then add horseradish peroxidase while stirring, then slowly add hydrogen peroxide solution dropwise, and stir at 6000rpm Stir and react for 30 hours, ...

Embodiment 2

[0037] Weigh lignosulfonic acid, 3,4-ethylenedioxythiophene, sodium tartrate and sodium oxalate according to the mass ratio of 2.8:1:2:2.5 and add high-purity water to form a mixed solution with a solid content of 2.5%. In a water bath environment at 25°C, stir at 6000rpm for 30min, add acetic acid-sodium acetate buffer solution to adjust the pH of the mixture to 6, then add horseradish peroxidase while stirring, and then slowly add hydrogen peroxide solution dropwise , continue to stir and react for 24 hours to obtain a primary reaction solution; weigh the above primary reaction solution, 3,4-ethylenedioxythiophene, sodium tartrate and sodium oxalate in a mass ratio of 1.5:1:2:2.5 and add high-purity water, Make a mixed solution with a solid content of 2%, place it in a water bath environment at 20°C, stir at 7000rpm for 30min, then add horseradish peroxidase while stirring, then slowly add hydrogen peroxide solution dropwise, and stir at 6000rpm Stir and react for 30 hours, ...

Embodiment 3

[0042]Weigh lignosulfonic acid, 3,4-ethylenedioxythiophene, sodium tartrate and sodium oxalate according to the mass ratio of 2.8:1:2:2.5 and add high-purity water to form a mixed solution with a solid content of 2.5%. In a water bath environment at 25°C, stir at 6000rpm for 30min, add acetic acid-sodium acetate buffer solution to adjust the pH of the mixture to 6, then add soybean peroxidase while stirring, and then slowly add hydrogen peroxide solution dropwise, Continue to stir and react for 24 hours to obtain a primary reaction solution; weigh the above-mentioned primary reaction solution, 3,4-ethylenedioxythiophene, sodium tartrate and sodium oxalate according to the mass ratio of 1.5:1:2:2.5 and add high-purity water to prepare To form a mixed solution with a solid content of 2%, place it in a water bath environment at 20°C, stir at 7000rpm for 30min, then add soybean peroxidase while stirring, then slowly add hydrogen peroxide solution dropwise, and stir at 6000rpm Reac...

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Abstract

The invention provides a biocatalysis preparation method of high-conductivity poly(3,4-ethylenedioxythiophene)/lignosulfonic acid dispersion liquid. The biocatalysis preparation method comprises: taking peroxidase as a catalyst, taking hydrogen peroxide as an oxidizing agent, initiating a monomer 3,4-ethylenedioxythiophene to carry out a primary reaction, a secondary reaction and a tertiary reaction, and then purifying by using cation-anion resin, and adding ethanediol, dimethyl sulfate and dimethyl sulfoxide, mixing uniformly, and carrying out homogeneity treatment, cooling to the room temperature to obtain a product; lignosulfonic acid is prepared from processes of activation, grafted condensation, sulfonation, ultrafiltration purification and the like on wheat straw alkaline lignin. According to the preparation method, the wheat straw alkaline lignin is modified and prepared into the lignosulfonic acid with high molecular weight and high sulfonic group content, and high-conductivitypoly(3,4-ethylenedioxythiophene) dispersion liquid is prepared by using bio-enzyme to catalyze polymerization reaction, at the same time, the production cost is reduced, the resources are saved and the environmental pollution caused by the waste liquid of paper making is alleviated; the method has the double beneficial effect of economic and environmental protection.

Description

technical field [0001] The invention relates to a preparation method of poly(3,4-ethylenedioxythiophene). More specifically, the invention relates to a biocatalytic preparation method of a high-conductivity poly(3,4-ethylenedioxythiophene) / lignosulfonic acid dispersion, which belongs to the technical field of conductive polymers. Background technique [0002] The most widely studied conducting polymers are polyaniline derivatives, polythiophene derivatives and polypyrrole derivatives. Among them, polythiophene and its derivatives are compounds with the lowest energy barrier among conductive polymers. Poly(3,4-ethylenedioxythiophene), referred to as PEDOT, is a new type of conductive polymer, which was first developed by scientists from Bayer in Germany in the 1980s. - Obtained after polymerization of ethylenedioxythiophene (abbreviated as EDOT). Among many conductive polymers, PEDOT has attracted extensive attention due to its advantages such as high electrical conductivi...

Claims

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Application Information

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IPC IPC(8): C08L65/00C08G61/12C08H7/00C08J3/28C08J3/07
Inventor 刘营营
Owner 刘营营
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