CN107556474A - A kind of high-specific surface area polyaniline and preparation method thereof - Google Patents
A kind of high-specific surface area polyaniline and preparation method thereof Download PDFInfo
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- CN107556474A CN107556474A CN201710919889.7A CN201710919889A CN107556474A CN 107556474 A CN107556474 A CN 107556474A CN 201710919889 A CN201710919889 A CN 201710919889A CN 107556474 A CN107556474 A CN 107556474A
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- polyaniline
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Abstract
The invention discloses a kind of high-specific surface area polyaniline and preparation method thereof, comprise the steps of：(1) it is 1 in mass ratio by sodium acetate, aniline monomer and ammonium persulfate:1‑2:3 10 mixing, react 3 10h, stand, filter, wash, dry；(2) dispersing polyaniline that reaction obtains stirring, filters, washing in 0.02 0.08mol/L hydrochloric acid solutions, dries, obtain high-specific surface area polyaniline material.Using high-specific surface area polyaniline material average diameter prepared by this method, average thickness is 200 230nm, has preferable chemical property for 78 μm, can be widely applied to ultracapacitor and electromagnetic shielding field.
Description
Technical field
The invention belongs to conductive material field, more particularly to a kind of high-specific surface area polyaniline and preparation method thereof.
Background technology
Polyaniline, one kind of high-molecular compound, there is special electricity, optical property, there can be conduction after doped
Property.All served many purposes in terms of the exploitation and development of electronics industry, information engineering, defence engineering etc..Polyaniline is through certain
After processing, various equipment and material with specific function can be made, can such as be passed as the urease of biological or chemical sensor
Sensor, electronic field emission source, more traditional lithium electrode material in charge and discharge process have more excellent reversible electrode material,
Selective membrane material, antistatic and electromagnetic shielding material, conductive fiber, anti-corrosion material etc..Due to the electrochemistry of polyaniline
Its specific surface area can be largely dependent upon, therefore the specific surface area for lifting polyaniline is maximally effective its specific capacitance value of lifting
With the method for absorbing property.
The method for preparing polyaniline at present has the disadvantages that：(1) using dichloromethane as solvent, be unfavorable for environmental protection and
Cost control；(2) need in acid condition using dendrimer as template, and preparation technology is complicated.
The content of the invention
Goal of the invention：There is provided a kind of high-specific surface area and preparation technology is simple, lower-cost plate polyaniline and its
Preparation method.
Technical scheme：A kind of preparation method of high-specific surface area polyaniline of the present invention, is comprised the steps of：
(1) it is 1 in mass ratio by sodium acetate, aniline monomer and ammonium persulfate:1-2:3-10 hybrid reactions, stand, filter,
Washing, dry, obtain polyaniline；
(2) by the dispersing polyaniline obtained in step (1) in hydrochloric acid solution, stirring, filter, wash, drying, obtaining height
The plate polyaniline material of specific surface area.
Wherein, in step (1), the reaction temperature is 50-60 DEG C.The hybrid reaction time is 3-10h.
The washing is colourless to filtrate to be washed with deionized water and absolute ethyl alcohol.
The concentration of hydrochloric acid solution is 0.02-0.08mol/L.
Further, sodium acetate, aniline monomer and ammonium persulfate are 1 in mass ratio:1:5.
Further, in step (1) and step (2), the drying is 70 DEG C of dry 24h.
Polyaniline average diameter prepared by the preparation method of high-specific surface area polyaniline of the present invention is 7-8 μm,
Average thickness is 200-230nm.
Inventive principle：In the presence of suitable temperature and appropriate initiator ammonium persulfate, aniline monomer is in deionized water
Middle polymerization obtains high-specific surface area polyaniline nano material, can effectively improve polyaniline electricity storage performance, increase the electromagnetism of material
Wave-absorbing property.
Beneficial effect：(1) high-specific surface area polyaniline nano material prepared by the present invention, average diameter is 7-8 μm, average
Thickness is 200-230nm.Polyaniline of the present invention is nanoscale, and preparation technology is simple, can easily control the cost, and can be widely applied to surpass
Level capacitor and electromagnetic shielding field.
Embodiment
Embodiment 1：
Sodium acetate is scattered in 500ml deionized waters at room temperature, magnetic is dispersed with stirring uniformly；Aniline monomer is added, will
Mixed solution continues magnetic stirring 60min；Ammonium persulfate is scattered in 500ml deionized waters so that sodium acetate, aniline monomer and
The mass ratio of ammonium persulfate is 1:1:10, reaction temperature is controlled at 50 DEG C, and ammonium persulfate solution is added dropwise into sodium acetate and aniline
Mixed solution；After being added dropwise, continue to react 5h, stand；Filter after obtained product is removed into supernatant liquor, spend respectively
It is in colourless that ionized water and absolute ethyl alcohol, which are washed to filtrate, and then 70 DEG C of vacuum drying 24h in vacuum drying oven, that is, obtain polyphenyl
Amine；By obtained dispersing polyaniline in 0.02mol/L hydrochloric acid solutions, magnetic stirring 24h, then filter, wash, 70 DEG C of dryings
24h, that is, obtain the high-specific surface area polyaniline of acidification.Polyaniline properties of product prepared by embodiment 1 are the same as embodiment 4.
Embodiment 2：The mass ratio of sodium acetate, aniline monomer and ammonium persulfate is 1:2:3；Dispersing polyaniline is in 0.08mol/
In L hydrochloric acid；Remaining is the same as embodiment 1.
Embodiment 3：The mass ratio of sodium acetate, aniline monomer and ammonium persulfate is 1:1:5；Dispersing polyaniline is in 0.04mol/
In L hydrochloric acid；Remaining is the same as embodiment 1.
Polyaniline material prepared by embodiment 1-3 is determined, is as a result 7-8 μm for polyaniline material average diameter, it is average straight
Footpath is 200-230nm, and aperture is nanoscale, is nanometer materials, and material size is homogeneous.The polyaniline of the high-specific surface area of preparation
With excellent electric storage performance.Polyaniline prepared by the present invention has excellent electromaganic wave absorbing property.
Claims (7)
1. a kind of preparation method of high-specific surface area polyaniline, is comprised the steps of：
(1) it is 1 in mass ratio by sodium acetate, aniline monomer and ammonium persulfate:1-2:3-10 hybrid reactions, stand, filter, wash
Wash, dry, obtain polyaniline；
(2) by the dispersing polyaniline obtained in step (1) in hydrochloric acid solution, stirring, filter, wash, drying, obtaining Gao Bibiao
Area flat panel type polyaniline material.
2. the preparation method of high-specific surface area polyaniline according to claim 1, it is characterised in that described anti-in step (1)
It is 50-60 DEG C to answer temperature.
3. the preparation method of high-specific surface area polyaniline according to claim 1, it is characterised in that described mixed in step (1)
The conjunction reaction time is 3-10h.
4. the preparation method of high-specific surface area polyaniline according to claim 1, it is characterised in that in step (2), the salt
Acid solutions are 0.02-0.08mol/L.
5. the preparation method of high-specific surface area polyaniline according to claim 1, it is characterised in that sodium acetate, aniline monomer and
Ammonium persulfate is 1 in mass ratio:1:5.
6. the preparation method of high-specific surface area polyaniline according to claim 1, it is characterised in that step (1) and step (2)
In, the drying is 70 DEG C of dry 24h.
7. according to the polyaniline material prepared by the preparation method of any described high-specific surface area polyaniline in claim 1-6
Material, average diameter are 7-8 μm, average thickness 200-230nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919889.7A CN107556474A (en) | 2017-09-30 | 2017-09-30 | A kind of high-specific surface area polyaniline and preparation method thereof |
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| CN201710919889.7A CN107556474A (en) | 2017-09-30 | 2017-09-30 | A kind of high-specific surface area polyaniline and preparation method thereof |
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| CN107556474A true CN107556474A (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710919889.7A Pending CN107556474A (en) | 2017-09-30 | 2017-09-30 | A kind of high-specific surface area polyaniline and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633733A (en) * | 2009-09-01 | 2010-01-27 | 南京大学 | Conductive polyaniline humic acid complex, preparation method thereof and application of mercury ion in adsorbed water body |
| CN105949459A (en) * | 2016-05-19 | 2016-09-21 | 合肥师范学院 | Meshed polyaniline nanosheet and preparation method thereof |
-
2017
- 2017-09-30 CN CN201710919889.7A patent/CN107556474A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633733A (en) * | 2009-09-01 | 2010-01-27 | 南京大学 | Conductive polyaniline humic acid complex, preparation method thereof and application of mercury ion in adsorbed water body |
| CN105949459A (en) * | 2016-05-19 | 2016-09-21 | 合肥师范学院 | Meshed polyaniline nanosheet and preparation method thereof |
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Application publication date: 20180109 |