Method for modifying polyaniline polymer

Abstract

The invention discloses a polyaniline polymer modification method, which comprises: S1, sequentially adding an emulsifier, hydrochloric acid and purified water to aniline, adding a fullerene derivative, and carrying out violent stirring for 2-3 h under an ice-water bath condition, with the mass ratio of aniline to C60 or the fullerene derivative being 14-18: 4-6; and S2, adding an initiator solution into the mixed solution obtained in the step S1, controlling the temperature to be 80-90 DEG C, continuously reacting for 3 hours, then adding a polylactic acid solution, violently stirring and reacting for 3-5 hours at the temperature of 90-95 DEG C, evaporating the solution to obtain a product, and finally drying to obtain a polyaniline modified product. By adding polylactic acid and fullerene C60 or a fullerene derivative into polyaniline, the conductivity of polyaniline can be enhanced.

Description

technical field

[0001] The invention belongs to the technical field of polyaniline modification, and in particular relates to a method for modifying polyaniline polymers. Background technique

[0002] Conductive polymers have shown potential application prospects in the fields of optoelectronics and biomedicine, and have been widely used in high-end smart fabrics in recent years. In conductive polymers, polyaniline monomer has been widely used because of its low price, simple synthesis process, high conductivity, stability in air and solution, unique doping phenomenon and good electrochemical reversibility. Applications. However, when it is used as a raw material for technical products, its conductivity cannot meet the requirements, so it is necessary to improve the conductivity of polyaniline. Contents of the invention

[0003] The invention provides a method for modifying polyaniline polymers, which can improve the conductivity of polyaniline.

[0004] To achieve the ...

Examples

Embodiment 1

[0021] Take a 25mL two-necked flask, add 300mg of C in sequence 60 and 3mL of fuming sulfuric acid, heated to 55°C, and reacted for 70h under nitrogen protection to obtain a suspension; after cooling to room temperature, add the suspension dropwise to absolute ethanol in an ice bath, and centrifuge After standing still, the intermediate product can be obtained; take a 50mL round bottom flask, add ultrapure water to the intermediate product for hydrolysis reaction, N 2 Heat to 85°C and react for 8 hours; use a sand core filter device to obtain a brown solid, and wash it repeatedly with ultrapure water for 3 times, and finally place it in a vacuum drying oven to obtain a fullerene derivative C 60 (OH) 12 .

[0022] 170mg of aniline was added to a two-necked flask, followed by 100mg of sodium dodecylsulfonate (as an emulsifier), 4mL of 2mol / L hydrochloric acid and 15mL of ultrapure water, and finally (0mg, 20mg, 100mg) of Fullerene Derivative C 60 (OH) 12 , stirred vigorousl...

Embodiment 2

[0029] 170mg of aniline was added to a two-necked flask, followed by 100mg of sodium dodecylsulfonate (as an emulsifier), 4mL of 2mol / L hydrochloric acid and 15mL of ultrapure water, and finally (0mg, 20mg, 100mg) of Fullerene C 60 , stirred vigorously for 2 h under ice-water bath conditions.

[0030] Dissolve 0.4g of ammonium persulfate in 15mL of ultrapure water, add dropwise into the reaction flask to control the temperature at 80-90°C and continue the reaction for 3h; finally add polylactic acid solution (a solution formed by dissolving 1.2g of polylactic acid solid in chloroform solvent) ), 90-95 ° C vigorously stirred and reacted for 3 hours, the reaction product was washed with ethanol and ultrapure water until the water phase was colorless, to remove remaining monomers and ammonium persulfate, etc.; use a rotary evaporator to extract the obtained oil The phase product was spin-dried to obtain the target product, which was placed in a vacuum drying oven for 12 hours to...

Embodiment 3

[0036] 170mg of aniline was added to a two-necked flask, followed by 100mg of sodium dodecylsulfonate (as an emulsifier), 4mL of 2mol / L hydrochloric acid and 15mL of ultrapure water, and finally (40mg, 60mg, 80mg) of Fullerene C 60 or fullerene derivative C 60 (OH) 12 , stirred vigorously for 2 h under ice-water bath conditions.

[0037] Dissolve 0.4g of ammonium persulfate in 15mL of ultrapure water, add dropwise into the reaction flask to control the temperature at 80-90°C and continue the reaction for 3h; finally add polylactic acid solution (a solution formed by dissolving 1.2g of polylactic acid solid in chloroform solvent) ), 90-95 ° C vigorously stirred and reacted for 3 hours, the reaction product was washed with ethanol and ultrapure water until the water phase was colorless, to remove remaining monomers and ammonium persulfate, etc.; use a rotary evaporator to extract the obtained oil The phase product was spin-dried to obtain the target product, which was placed ...

technical field

[0001] The invention belongs to the technical field of polyaniline modification, and in particular relates to a method for modifying polyaniline polymers. Background technique

[0002] Conductive polymers have shown potential application prospects in the fields of optoelectronics and biomedicine, and have been widely used in high-end smart fabrics in recent years. In conductive polymers, polyaniline monomer has been widely used because of its low price, simple synthesis process, high conductivity, stability in air and solution, unique doping phenomenon and good electrochemical reversibility. Applications. However, when it is used as a raw material for technical products, its conductivity cannot meet the requirements, so it is necessary to improve the conductivity of polyaniline. Contents of the invention

[0003] The invention provides a method for modifying polyaniline polymers, which can improve the conductivity of polyaniline.

[0004] To achieve the ...

Examples

Embodiment 1

[0021] Take a 25mL two-necked flask, add 300mg of C in sequence 60 and 3mL of fuming sulfuric acid, heated to 55°C, and reacted for 70h under nitrogen protection to obtain a suspension; after cooling to room temperature, add the suspension dropwise to absolute ethanol in an ice bath, and centrifuge After standing still, the intermediate product can be obtained; take a 50mL round bottom flask, add ultrapure water to the intermediate product for hydrolysis reaction, N 2 Heat to 85°C and react for 8 hours; use a sand core filter device to obtain a brown solid, and wash it repeatedly with ultrapure water for 3 times, and finally place it in a vacuum drying oven to obtain a fullerene derivative C 60 (OH) 12 .

[0022] 170mg of aniline was added to a two-necked flask, followed by 100mg of sodium dodecylsulfonate (as an emulsifier), 4mL of 2mol / L hydrochloric acid and 15mL of ultrapure water, and finally (0mg, 20mg, 100mg) of Fullerene Derivative C 60 (OH) 12 , stirred vigorousl...

Embodiment 2

[0029] 170mg of aniline was added to a two-necked flask, followed by 100mg of sodium dodecylsulfonate (as an emulsifier), 4mL of 2mol / L hydrochloric acid and 15mL of ultrapure water, and finally (0mg, 20mg, 100mg) of Fullerene C 60 , stirred vigorously for 2 h under ice-water bath conditions.

[0030] Dissolve 0.4g of ammonium persulfate in 15mL of ultrapure water, add dropwise into the reaction flask to control the temperature at 80-90°C and continue the reaction for 3h; finally add polylactic acid solution (a solution formed by dissolving 1.2g of polylactic acid solid in chloroform solvent) ), 90-95 ° C vigorously stirred and reacted for 3 hours, the reaction product was washed with ethanol and ultrapure water until the water phase was colorless, to remove remaining monomers and ammonium persulfate, etc.; use a rotary evaporator to extract the obtained oil The phase product was spin-dried to obtain the target product, which was placed in a vacuum drying oven for 12 hours to...

Embodiment 3

[0036] 170mg of aniline was added to a two-necked flask, followed by 100mg of sodium dodecylsulfonate (as an emulsifier), 4mL of 2mol / L hydrochloric acid and 15mL of ultrapure water, and finally (40mg, 60mg, 80mg) of Fullerene C 60 or fullerene derivative C 60 (OH) 12 , stirred vigorously for 2 h under ice-water bath conditions.

[0037] Dissolve 0.4g of ammonium persulfate in 15mL of ultrapure water, add dropwise into the reaction flask to control the temperature at 80-90°C and continue the reaction for 3h; finally add polylactic acid solution (a solution formed by dissolving 1.2g of polylactic acid solid in chloroform solvent) ), 90-95 ° C vigorously stirred and reacted for 3 hours, the reaction product was washed with ethanol and ultrapure water until the water phase was colorless, to remove remaining monomers and ammonium persulfate, etc.; use a rotary evaporator to extract the obtained oil The phase product was spin-dried to obtain the target product, which was placed ...

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