KR101480635B1 - Emulsion composition and method for preparing the same, and conductive nanoparticles and method for manufacturing conductive nanoparticles using the same - Google Patents

Abstract

The present invention relates to a conductor having water resistance, chemical resistance, and weather resistance against moisture or surrounding environments. The present invention provides a conductive emulsifier containing a hydrophilic functional group and a functional group that can be dehydrated and condensed with the hydrophilic functional group; a method for producing the same; a conductive nanoparticle having improved electric properties and material stability using the same; a method for producing the same; and a method for producing a conductive film.

Description

TECHNICAL FIELD The present invention relates to a conductive emulsifier, a conductive nanoparticle, and a conductive nanoparticle using the conductive nanoparticle, and a conductive nanoparticle using the conductive nanoparticle.

The present invention relates to a novel conductive emulsifier and a method for producing the same; Conductive nanoparticles having water resistance, chemical resistance, and weather resistance against moisture or the surrounding environment, and a method for producing the same; And a method for producing a conductive film.

Conductive polymers are being studied in a variety of ways because they are cheaper, easier to process, and environmentally friendly than conventional conductive materials. Particularly in the fields of electricity and electronics, it has been applied to various fields such as electrolytic capacitors, electric double layer capacitors, switching devices, nonlinear devices, field effect transistors, optical recording materials, display devices and anisotropic conductor sensors. Is being studied.

However, the pure conductive polymer has a component that is not easily soluble in the solvent, so an emulsifier that dissolves or disperses in the solvent is used. Accordingly, studies have been actively conducted on conductive emulsifiers that can maintain conductivity while improving the dispersibility of conductive materials. Therefore, recently, for example, a conductive polymer emulsifier which improves the dispersibility of a conductive polymer through an emulsifier and does not lose its inherent conductivity, such as Korean Patent No. 1003531, has been studied variously.

However, in spite of the advantages of the conductive emulsifier, most conductive polymers and nanowires to be dispersed by the conductive emulsifier tend to lose their properties due to sensitivity to moisture or polar solvents in the air, and most conductive emulsifiers also contain hydrophilic groups , And it is easy to lose intrinsic properties due to moisture and chemicals when exposed to the atmosphere for a long time. Therefore, the reliability of the application of the electric parts using the conductive polymer is very weak, and the commercial applicability is also greatly reduced.

In order to solve the above problems, in the prior art, a method of enhancing a certain degree of stability by inducing physical bonding between conductive emulsifiers by adding a conductive emulsifier and a binder other than a conductive material has been proposed. However, since most of the materials used as such binders are non-conductive, they deteriorate the inherent characteristics of the conductive material and have difficulties in processing the process itself. Therefore, it is required to develop a conductive polymer emulsifier having no water resistance or chemical resistance without an additional binder.

Korean Patent Publication No. 1003531

It is an object of the present invention to provide a hydrophilic functional group; The present invention provides a conductive emulsifier comprising the hydrophilic functional group and a functional group capable of dehydrating condensation and a process for preparing the conductive emulsifier, and provides the conductive nanoparticle using the conductive emulsifier and a method for producing the conductive nanoparticle. Which is a conductive nanoparticle capable of retaining its inherent electrical properties while maintaining its chemical, chemical, and weathering properties.

Another object of the present invention is to provide a use of the conductive nanoparticles for applying the conductive nanoparticles to an electronic material, an optical material, a printing material, or a film.

Disclosure of the Invention In order to solve the above-mentioned object, the present invention relates to a hydrophilic functional group; There is provided a conductive emulsifier comprising a hydrophilic functional group and a functional group capable of dehydrating condensation.

The present invention also relates to a conductive emulsifier precursor comprising a hydrophilic functional group;

And polymerizing a monomer containing a functional group capable of dehydrating condensation with the hydrophilic functional group. The present invention also provides a method for producing a conductive emulsifier.

Further, the present invention relates to a conductive polymer core part; And a conductive emulsifier shell portion surrounding the core portion and including a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group.

Meanwhile, the present invention relates to a conductive polymer composition comprising a monomer of a conductive polymer; A conductive emulsifier comprising a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group; Aqueous solvent; And an oxidizing agent to form an emulsion; Polymerizing the formed emulsion to prepare emulsion-like particles; And a drying step of drying the emulsion-formed particles.

The present invention also relates to monomers of conductive polymers; A conductive emulsifier comprising a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group; Aqueous solvent; And an oxidizing agent to form an emulsion; Polymerizing the formed emulsion to prepare emulsion-like particles; And a step of applying the formed emulsion state particles to the base substrate and then heat-treating the conductive polymer film.

The hydrophilic functional group of the present invention; By using a conductive emulsifier containing a hydrophilic functional group and a functional group capable of dehydrating condensation, it is possible to provide a composition which is excellent in water resistance against environmental pollutants and environment, strong chemical resistance against polar solvents such as methanol and ethanol and weatherability, It is possible to provide these excellent conductive nanoparticles.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a graph showing a rate of sheet resistance change according to a time at which a conductive film produced according to an embodiment of the present invention is left at room temperature.

Hereinafter, the configuration of the present invention will be described in detail.

The present invention relates to a conductive emulsifier comprising a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group.

The hydrophilic functional group is not particularly limited as long as it is a functional group having hydrophilicity, and examples thereof include a hydroxyl group (-OH), a carboxyl group (-COOH), a sulfone group (-SO ₃ H), an amino group (-NH ₂ ) (-C (= O) -) and a phosphoric acid group (-HPO ₂ H).

The functional group capable of dehydrating condensation with the hydrophilic functional group is not particularly limited, but may be a hydroxyl group (-OH), a carboxyl group (-COOH), a sulfone group (-SO ₃ H), an amino group (-NH ₂ ) (-C (= O) -) and a phosphoric acid group (-HPO ₂ H).

The term " conductive emulsifier precursor " in the present invention means a precursor of a conductive emulsifier which acts both as an emulsifier and as a conductive dopant.

The conductive emulsifier may be selected from, for example, polystyrenesulfonate, poly (p-toluenesulfonate), polycamphorsulfonate, polydi (2-ethylhexyl) sulfosuccinate Poly (di (2-ethylhexyl) sulfosuccinate), or polydioleylsulfosuccinate.

The present invention also relates to a method for preparing a conductive emulsifier comprising a conductive emulsifier precursor containing a hydrophilic functional group and a monomer containing a functional group capable of dehydrating condensation with the hydrophilic functional group.

The method for producing a conductive emulsifier in the present invention preferably includes the following steps.

Mixing a conductive emulsifier precursor containing a hydrophilic functional group with a monomer containing a hydrophilic functional group and a functional group capable of dehydrating condensation to form a mixture; And polymerizing the monomer with the conductive emulsifier precursor by adding a radical initiator to the resulting mixture.

The conductive emulsifier precursor containing the hydrophilic group used in the present invention is not particularly limited and includes, for example, sodium styrenesulfonate, sodium dodecylsulfonate, sodium laurylsulfonate, n-dodecyl (DDM)), alkyl methacrylate, dodecyl methacrylate (DMA), stearyl methacrylate (SMA), sodium dodecylbenzenesulfonate, and derivatives thereof May be used.

In the present invention, the monomer containing a substituent capable of dehydrating condensation with the hydrophilic group is not particularly limited, and examples thereof include hydroxyethyl methacrylate, hydroxyethyl acrylate, methacrylic acid, acrylic acid, sodium ethylene sulfonate, Maleic acid, and fumaric acid may be used.

In this case, the molar ratio of the conductive emulsifier precursor to the monomer may be 100: 4 to 100: 25, 100: 5 to 100: 15, or 100: 8 to 100: 20, , It is possible to prevent a decrease in conductivity due to a low sheet resistance and to improve durability.

In the present invention, the radical initiator is not particularly limited as long as it can polymerize the conductive emulsifier precursor and the monomer. However, the radical initiator may be selected from persulfate, azobisisobutyronitrile (AIBN), benzoyl peroxide (BPO) And sialic butyl peroxide (DTBP) may be used.

The present invention also relates to a conductive polymer core part; And a shell part including a conductive emulsifier which surrounds the core part and includes a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group.

The conductive nanoparticles of the present invention will be described in detail as follows.

Examples of the conductive polymer include, but are not limited to, poly (3,4-ethylenedioxythiophene) (PEDOT), polyimide, polythiophene (PT), polypyrrole (PPY), polyaniline Poly (p-phenylene sulfide), poly (p-phenylene vinylene), polythiophene poly (thienylene vinylene), and the like. And derivatives thereof.

In addition, the conductive emulsifier includes a hydrophilic group and a substituent capable of dehydrating condensation with the hydrophilic group, and the above-described conductive emulsifier according to the present invention can be used as it is.

The present invention also relates to monomers of conductive polymers; A conductive emulsifier comprising a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group; Aqueous solvent; And an oxidizing agent to form an emulsion; Polymerizing the formed emulsion to prepare emulsion-like particles; And a drying step of drying the emulsion-formed particles.

The step of preparing the emulsion-state particles in the present invention includes the steps of: adding an initiator to the emulsion to form a seed emulsion; And

And stirring the seed emulsion to emulsion-oxidize the monomer of the conductive polymer.

In the present invention, the monomer of the conductive polymer is not particularly limited, but may be, for example, styrene sulfonic acid, pyrrole, aniline, acetylene (C2H2), thiophene and derivatives thereof May be used.

Preferably, a thiophene derivative may be used as a monomer of the conductive polymer, and the thiophene derivative may be a derivative of a thiophene derivative in which the thiophene repeating unit is one kind selected from the group consisting of alkyl, alkoxy, carboxyl, And the substituent substituted in the thiophene derivative can be confirmed as a property of improving the conductivity when the conductive nanoparticles are prepared or when the conductive film is prepared. Further, in the case of some thiophene derivatives, it may be removed through a dehydration condensation reaction with a hydrophilic functional group contained in the conductive emulsifier or a functional group capable of dehydrating condensation with the hydrophilic functional group.

As the conductive emulsifier containing the hydrophilic group and the substituent capable of dehydrating condensation with the hydrophilic group, the conductive emulsifier according to the present invention may be used as it is. The amount of the conductive emulsifier added may be 0.01 to 0.01 part by weight of the monomer of the conductive polymer, To 500 parts by weight, from 0.01 to 100 parts by weight, from 1 to 50 parts by weight, or from 100 to 500 parts by weight, and when the amount of the conductive emulsifier is in the above range, the polymerization of the nanoparticles is induced And it is possible to reduce the aggregation phenomenon between the particles and prevent the inhibition of particle formation due to excessive emulsifier.

In the present invention, when the initiator added to the emulsion is reduced by oxidizing the monomer of the conductive polymer, the oxidizing agent acts to oxidize the reduced initiator to oxidize the initiator, and the kind thereof is not particularly limited , For example, peroxides [H ₂ O ₂ , (NH ₄ ) ₂ S ₂ O _{8 ,} or O ₂ ]; Oxygen acids [HMnO _4, HNO _3, or HC _l O _4]; Or at least one selected from the group consisting of halides [F ₂ , Cl ₂ , and Br ₂ ] can be used.

The amount of the oxidizing agent to be added is preferably 10 to 1000 parts by weight based on 100 parts by weight of the monomer of the conductive polymer. If the content is less than 10 parts by weight, the reaction of reducing the initiator may not occur sufficiently, and the degree of polymerization of the conductive polymer may be lowered. On the other hand, if the amount exceeds 1000 parts by weight, polymerization may be deteriorated.

In the present invention, the aqueous solvent may be deionized water (DI water). In the present invention, deionized water is prepared by sequentially passing through a cation and anion exchange resin, and has an acidity of pH 1 to 5.

The aqueous solvent may be 500 to 2000 parts by weight, 500 to 1000 parts by weight, 800 to 1400 parts by weight, or 1200 to 2000 parts by weight based on 100 parts by weight of the monomer of the conductive polymer, , It is possible to sufficiently dissolve the mixture and prevent the deterioration of the properties of the conductive nanoparticles.

In the present invention, the initiator has the function of oxidizing the conductive polymer monomer and is not particularly limited, and examples thereof include metal oxides.

The metal oxide is, for _{example, H 4 Fe (Ⅲ) NO} 8 S 2 / H 2 O 2, H 4 Fe (Ⅲ) NO 8 S 2 / O 2, H 4 Fe (Ⅲ) NO 8 S 2 / HMnO _{4, H 4 Fe (ⅲ)} NO 8 S 2 / F 2, H 4 Fe (ⅱ) NO 8 S 2 / H 2 O 2, H 4 Fe (ⅱ) NO 8 S 2 / O 2, H 4 Fe ( _{ⅱ) NO 8 S 2 / HMnO} 4, H 4 Fe (ⅱ) NO 8 S 2 / F 2, FeCl 3 / H 2 O 2, FeCl 3 / O 2, FeCl 3 / HMnO 4, FeCl 3 / F 2, Iron complexes (III) such as FeCl ₂ / H ₂ O ₂ , FeCl ₂ / O ₂ , FeCl ₂ / HMnO ₄ , FeCl ₂ / F ₂ , CuCl ₂ / H ₂ O ₂ and CuCl ₂ / HMnO ₄ , At least one selected from the group consisting of water (II), iron (III) chloride, iron (II) chloride and copper (II) chloride.

The initiator may be directly incorporated into a mixture of starting materials for the polymerization reaction, for example, monomers, emulsifiers and oxidizing agents of the conductive polymer, but is preferably deionized water (DI water), chloroform, ethyl acetate, hexane, It may be mixed in an organic solvent such as cyclohexane, petroleum ether, or methylene chloride.

The amount of the initiator added may be 0.1 to 10 parts by weight, 0.5 to 6 parts by weight, 2 to 8 parts by weight, or 0.1 to 1 part by weight based on 100 parts by weight of the conductive polymer monomer. When the content of the initiator is in the range , Deterioration of physical properties such as lightness and electrical conductivity of the conductive nanoparticles can be prevented, and an appropriate polymerization reaction rate can be maintained.

When the initiator is supersaturated in an organic solvent, an initiator may be used by dissolving the initiator in an organic solvent for 10 to 20 minutes in an ultrasonic bath to increase the solubility.

In the present invention, the seed emulsion refers to a form in which particles are present in the emulsion, and a conductive polymer monomer is grown to a critical chain length to form a seed in the emulsion.

In the present invention, after the seed emulsion is formed, the organic solvent may be further removed.

Although the step of removing the organic solvent is not particularly limited, the seed emulsion may be formed and then stirred at 45 to 50 DEG C for 10 to 30 minutes or reduced at a pressure of 10 < ^-2 > to 100 Torr, The solvent can be removed.

The emulsion oxidation polymerization is not particularly limited, but can be carried out, for example, by stirring the seed emulsion at 10 to 50 DEG C for 6 to 48 hours.

The drying step for drying the emulsion-state particles formed in the present invention is not particularly limited, but can be carried out, for example, at room temperature for 1 hour.

The present invention may further include the step of preparing the emulsion-like particles and the step of heat-treating the emulsion-like particles formed between the drying step. Through this heat treatment, the functional groups existing in the conductive nanoparticles and the dehydration of the substituents A condensation reaction can be initiated.

The heat treatment may be performed at 30 to 200 ° C for 2 to 20 minutes or at 130 to 170 ° C for 2 to 20 minutes, although the heat treatment is not particularly limited as long as it is a temperature and time required for the dehydration condensation reaction.

The present invention also relates to monomers of conductive polymers; A conductive emulsifier comprising a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group; Aqueous solvent; And an oxidizing agent to form an emulsion; Polymerizing the formed emulsion to prepare emulsion-like particles; Applying the formed emulsion-state particles to a base material, and then heat-treating the conductive polymer film.

The method for producing a conductive polymer film according to the present invention comprises the steps of preparing emulsion-state particles by the same method as the above-mentioned method for producing conductive nanoparticles, applying the emulsion-state particles thus prepared to the base substrate, .

The heat treatment may be performed at 30 to 200 ° C for 2 to 20 minutes or at 130 to 170 ° C for 2 to 20 minutes, although the heat treatment is not particularly limited as long as it is a temperature and time required for the dehydration condensation reaction.

In the present invention, the conductive polymer film may further include a step of drying after the heat treatment. At this time, the drying is not particularly limited, but the conductive polymer film can be produced by natural drying at room temperature.

The conductive nanoparticles or the conductive polymer film according to the present invention can be used for electronic materials, optical materials, toners and / or inks, and the like, as well as organic light emitting materials, energy conversion and energy storage (Electrophoretic layer material), pattern manufacturing material, printing ink material, medical material (medical image sensor, biosensor), and the like.

In the present invention, an electronic material, an optical material, a toner and / or an ink or the like means an electronic material, an optical material, a toner and / or an ink containing a conductive polymer (e.g., polythiophene) The present invention is not particularly limited as long as it is a conventional product in the industry. Preferably, the electronic material is a photovoltaic cell, a condenser (used as an electrolyte substitute), a printed circuit board (PCB) ) And / or an antistatic agent (to prevent the generation of static electricity on the surface of plastics, polymers, etc. through a coating or the like), and an optical material is an electroluminescent device such as an organic light emitting diodes and a display, Preferred optical materials include flat panel displays such as LCDs, organic EL (electro-luminescence) devices, holeinjecting layers of indium tin oxide (ITO) r) or an emitting layer.

Hereinafter, the present invention will be described in detail with reference to examples. Hereinafter, the present invention will be described in detail with reference to examples. However, the following examples are intended to illustrate the present invention in detail, and the scope of the present invention is not limited by these examples.

In the present embodiment, " deionized water " means that the deionized water is produced by sequentially passing distilled water through a cation and anion exchange resin.

≪ Example 1 >

20.619 g of sodium styrene sulfonate (Sigma-Aldrich, USA) as a precursor of a conductive emulsifier was added to 95 g of deionized water at 18 캜, and a monomer having a hydrophilic functional group capable of dehydrating condensation with a conductive emulsifier precursor and a hydroxyethyl methacrylate [sigma -Aldrich, USA) was dissolved in a mixed solvent of tetrahydrofuran and dioxane at a ratio of 1: 0.1 (molar ratio of sodium styrene sulfonate: hydroxyethyl methacrylate = 1: 0.1).

A radical initiator prepared by dissolving 0.3 g of sodium sulfate (Sigma-Aldrich, USA) in 5 g of deionized water was added to the dissolved solution and reacted at a temperature of 80 캜 for about 12 hours to prepare a conductive emulsifier .

The solid content of the conductive emulsifier prepared above was mixed to 38 g of deionized water at 20 캜 so as to have a solid content of 0.75 g and 0.256 g of 3,4-ethylenedioxythiophene (Sigma-Aldrich, USA) and 4 g of deionized water 0.58 g of a mixed sodium salt (Na ₂ S ₂ O ₈ ) was added and mixed to prepare an emulsion.

14 mg of iron salt (Fe ₃ (SO ₄ ) ₃ (Sigma-Aldrich, USA) as an initiator was mixed with 1 g of deionized water and mixed with the emulsion, followed by stirring at a temperature of 18 ° C for 20 hours to prepare a seed emulsion.

The seed emulsion mixture was stirred at a temperature of 18 캜 for 24 hours in a closed reactor to prepare emulsion-state substituted conductive nanoparticles.

The above-mentioned emulsion-state substituted conductive nanoparticles were heat-treated on a silicon wafer at about 150 DEG C for 10 minutes to prepare a conductive film.

≪ Example 2 >

A conductive film was produced in the same manner as in Example 1, except that the molar ratio of sodium styrene sulfonate [Sigma-Aldrich, USA] to hydroxyethyl methacrylate [Sigma-Aldrich] was 1: 0.05 Respectively.

≪ Examples 3 to 6 >

(HEA) [Example 3], methacrylic acid (MAA) [Example 4], acrylic acid (AA) [Example 5], or sodium ethylene sulphonate (manufactured by Mitsubishi Chemical Corporation) instead of hydroxyethyl methacrylate A conductive film was prepared in the same manner as in Example 1, except that NaVS [Example 6] was added in a molar ratio of 1: 0.1 to sodium styrenesulfonate.

≪ Comparative Example 1 &

Polystyrene sulfonate (Sigma-Aldrich, USA) was added to 38 g of deionized water at 20 占 폚 to a solid content of 0.75 g, and 0.256 g of 3,4-ethylenedioxythiophene (Sigma-Aldrich, USA) 0.58 g of a sodium salt (Na ₂ S ₂ O ₈ ) mixed with 4 g of deionized water was added and mixed to prepare an emulsion.

14 mg of iron salt (Fe ₃ (SO ₄ ) ₃ (Sigma-Aldrich, USA) as an initiator was mixed with 1 g of deionized water and mixed with the emulsion, followed by stirring at a temperature of 18 ° C for 20 hours to prepare a seed emulsion.

The seed emulsion mixture was stirred at a temperature of 18 캜 for 24 hours in a closed reactor to prepare emulsion-state substituted conductive nanoparticles.

The above-mentioned emulsion-state substituted conductive nanoparticles were heat-treated on a silicon wafer at about 150 DEG C for 10 minutes to prepare a conductive film.

Each of the films prepared in Examples 1 and 2 and Comparative Example 1 was allowed to stand at room temperature, and the change rate of the film sheet resistance with time was measured. The results are shown in FIG. The rate of sheet resistance change was expressed as a ratio of the sheet resistance change according to the time of leaving at room temperature versus the sheet resistance before leaving at room temperature.

As a result, as in the present invention, hydrophilic functional groups; In Examples 1 and 2 using the conductive emulsifier containing the hydrophilic functional group and the dehydration condensable functional group, the increase in resistance with time was lower than that in Comparative Example 1 using the conventional emulsifier polystyrene sulfonate And it can be confirmed that the durability of the conductive film according to the present invention can be improved.

The sheet resistances of the respective films prepared in Examples 2 to 6 and Comparative Example 1 were measured, and the results are shown in Table 1 below.

EXAMPLES / COMPARATIVE EXAMPLE Sheet resistance (Ω / sq.) Example 2 10 ^3.8 Example 3 10 ^4.0 Example 4 10 ^4.1 Example 5 10 ^3.9 Example 6 10 ^3.9 Comparative Example 1 10 ^4.0

As shown in Table 1, as a monomer containing a hydrophilic functional group of a conductive emulsifier precursor and a functional group capable of dehydrating condensation, hydroxyethyl methacrylate, 2-hydroxyethyl acrylate (HEA), methacrylic acid (MAA) (AA) and sodium ethylene sulfonate (NaVS), respectively, in Examples 2 to 6 are not significantly different from those in Comparative Example 1.

Claims (17)

Hydrophilic functional groups;
And a functional group capable of dehydrating condensation with the hydrophilic functional group,
Wherein the molar ratio of the hydrophilic functional group to the dehydration condensable functional group is 100: 4 to 25.
The method according to claim 1,
Hydrophilic functional group is a hydroxyl group (-OH), carboxyl group (-COOH), sulfonic group (-SO ₃ H), amino groups (-NH _2), carbonyl group (-C (= O) -) and phosphate groups (-HPO ₂ H). ≪ / RTI >
The method according to claim 1,
The functional group capable of dehydrating condensation with a hydrophilic functional group may be a hydroxyl group (-OH), a carboxyl group (-COOH), a sulfone group (-SO ₃ H), an amino group (-NH ₂ ), a carbonyl group And a phosphoric acid group (-HPO ₂ H).
A conductive emulsifier precursor comprising a hydrophilic functional group; and
And polymerizing the monomer containing a functional group capable of dehydrating condensation with the hydrophilic functional group,
Wherein the molar ratio of the conductive emulsifier precursor to the monomer containing a functional group capable of dehydrating condensation is 100: 4 to 25.
5. The method of claim 4,
Precursors of conductive emulsifiers comprising hydrophilic functional groups include sodium styrenesulfonate, sodium dodecylsulfonate, sodium laurylsulfonate, n-dodecyl mercaptan (DDM), alkylmethacrylate, dodecyl Wherein the conductive emulsifier is at least one selected from the group consisting of dodecyl methacrylate (DMA), stearyl methacrylate (SMA), sodium dodecylbenzenesulfonate, and derivatives thereof.
5. The method of claim 4,
The monomer containing a functional group capable of dehydrating condensation with the hydrophilic functional group may be at least one selected from the group consisting of hydroxyethyl methacrylate, hydroxyethyl acrylate, methacrylic acid, acrylic acid, sodium ethylene sulfonate, maleic acid and fumaric acid. A method for producing an emulsifier.
A conductive polymer core portion;
And a shell portion surrounding the core portion and including a conductive emulsifier including a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group,
Wherein the molar ratio of the hydrophilic functional group to the dehydration condensable functional group is 100: 4 to 25.
8. The method of claim 7,
The conductive polymer may be at least one selected from the group consisting of poly (3,4-ethylenedioxythiophene) (PEDOT), polyimide, polythiophene (PT), polypyrrole (PPY), polyaniline (PANI), polystyrenesulfonic acid (Polyphenylene sulfide), poly (p-phenylene vinylene), polythiophene poly (thienylenevinylene), and derivatives thereof, selected from the group consisting of polyacetylene, poly (p- phenylene) Conductive nanoparticles of at least one species.
9. The method of claim 8,
Wherein the conductive polymer is substituted with at least one substituent selected from alkyl, alkoxy, carboxyl, sulfone and alkyleneoxy.
Monomers of conductive polymers; A conductive emulsifier comprising a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group; Aqueous solvent; And an oxidizing agent to form an emulsion;
Polymerizing the formed emulsion to prepare emulsion-like particles; And
And a drying step of drying the emulsion-formed particles,
Wherein the molar ratio of the hydrophilic functional group to the dehydration condensable functional group is 100: 4 to 25.
11. The method of claim 10,
The step of preparing the emulsion-state particles comprises the steps of: adding an initiator to the emulsion to form a seed emulsion; And
And stirring the seed emulsion to emulsion-oxidize the monomer of the conductive polymer.
11. The method of claim 10,
Wherein the monomer of the conductive polymer is at least one selected from the group consisting of styrene sulfonic acid, pyrrole, aniline, acetylene (C2H2), thiophene, and derivatives thereof. ≪ / RTI >
11. The method of claim 10,
Wherein the conductive emulsifier is added in an amount of 0.01 to 500 parts by weight based on 100 parts by weight of the conductive polymer.
11. The method of claim 10,
Wherein the oxidizing agent is at least one selected from the group consisting of peroxides, oxygenates, halogens, and mixtures thereof.
11. The method of claim 10,
Further comprising the step of heat-treating emulsion-state particles formed between the step of producing emulsion-state particles and the step of drying.
16. The method of claim 15,
Wherein the heat treatment is performed at 130 to 170 占 폚 for 2 to 20 minutes.
Monomers of conductive polymers; A conductive emulsifier comprising a hydrophilic functional group and a functional group capable of dehydrating condensation with the hydrophilic functional group; Aqueous solvent; And an oxidizing agent to form an emulsion;
Polymerizing the formed emulsion to prepare emulsion-like particles;
Applying the formed emulsion state particles to a base substrate and then subjecting the base substrate to heat treatment,
Wherein the molar ratio of the hydrophilic functional group to the dehydration condensable functional group is 100: 4 to 25.

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