CN100387637C - Preparation method of high conductivity polyaniline in magnetic field - Google Patents
Preparation method of high conductivity polyaniline in magnetic field Download PDFInfo
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- CN100387637C CN100387637C CNB2005100572463A CN200510057246A CN100387637C CN 100387637 C CN100387637 C CN 100387637C CN B2005100572463 A CNB2005100572463 A CN B2005100572463A CN 200510057246 A CN200510057246 A CN 200510057246A CN 100387637 C CN100387637 C CN 100387637C
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- polyaniline
- magnetic field
- acid
- field environment
- high conductivity
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Abstract
The present invention relates to a preparation method for high conductivity polyaniline in a magnetic field environment. Firstly, a device for preparing polyaniline is arranged in a magnetic field environment, and then, under the condition of having acid media, oxidant and doping agents, polyaniline is synthesized and doped so as to obtain polyaniline material with high orientation and high conductivity; the orientation of conjugation conducting polymers is improved through an external magnetic field, and thereby, the conductivity and the anti-corrosive property are further improved. Compared with the existing conducting polyaniline product in china, the present invention has the advantage that the conductivity and the anti-corrosive property of polyaniline are obviously improved, and is applied to the fields, such as aeronautics, spaceflight, automobiles, machinery, chemical engineering, nuclear power, etc.
Description
Technical field
The present invention relates to high conductivity method for preparing polyaniline in a kind of magnetic field environment.
Background technology
Polyaniline has raw material and is easy to get, synthetic easy, can carry out fast and the reversible redox reaction, can store highdensity electric charge, have advantages such as good optical, chemical property and chemical stability, be considered to the conducting polymer composite that is hopeful to be used widely in practice most.Therefore effectively improve polyaniline conductivity, preservative property and processability and become the Recent study focus.
Correlative study shows: the action of a magnetic field can produce some physics, chemical effect in organic macromolecule, particulate or organism; magnetic field energy changes the orientation of molecule; the paramagnetism molecule can be arranged along field direction; and the orientation consistence of conjugation conductive polymer minor structure will help further to improve its conductivity.Cai of Xiamen University soughing of the wind in forest trees nineteen ninety-five deliver about " influence of magnetic field p-poly-phenyl amine electropolymerization " literary composition in also proved related conclusions.And the article and the patent that adopt the chemical polymerization method to prepare the high conductivity polyaniline in magnetic field environment are not appeared in the newspapers so far as yet.
Summary of the invention
The objective of the invention is to prepare the functional high molecule material polyaniline of high conductivity, high preservative property.
Technical scheme of the present invention is the polyaniline of preparation conduction in magnetic field environment, the steps include:
1) reaction unit at the preparation electrically conductive polyaniline adds pair of magnets;
2) take by weighing a certain amount of doping agent and be dissolved in the distilled water, be transferred in the reaction unit that is in magnetic field environment;
3) middling speed stirred after 1 hour, dripped aniline monomer, used distilled water diluting simultaneously, and high-speed stirring 1 hour forms uniform emulsion;
4) slowly drip assistant for emulsifying agent, become transparent or semitransparent and have blue light to glow, the generation that indicate microemulsion this moment up to whole emulsion system;
5) drip the ammonium persulfate solution that configures, probably in 30min, drip.Along with the adding of initiator, reaction system has experienced from transparent-pale blue-light green-dark green-blackish green variation;
6) it is blackish green having reacted the back emulsion, behind the acetone breakdown of emulsion, leaves standstill 10 hours, and suction filtration, vacuum-drying can obtain polyaniline powder.
Above-mentioned steps 2) in, needed dopant acid comprises micromolecular mineral acid and macromolecular organic acid.The small molecules mineral acid comprises: hydrochloric acid, perchloric acid, sulfuric acid, phosphoric acid etc.; Macromolecule organic acid comprises: sulfonic group Whitfield's ointment, camphorsulfonic acid, Witco 1298 Soft Acid, tosic acid etc.
Above-mentioned steps 3) in, the aniline monomer of dropping has following molecular formula:
In the formula, R
1, R
2, R
3, R
4, R
5Be respectively-H ,-CH
3,-NO
2,-F ,-Cl ,-OCH
3,-C
2H
5,-Br and/or-I.
The present invention has improved the orientation consistence of conjugation conducting polymer by externally-applied magnetic field, thereby has further improved the chemical property of polyaniline, makes it have higher specific conductivity and corrosion potential.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is further described, specific conductivity adopts the four probe method test among the following embodiment, and corrosion potential adopts the test of Ta Feier curve method.
Embodiment 1
The place adds pair of magnets at the there-necked flask maximum diameter, and its magneticstrength is 5000 Gausses.Take by weighing a certain amount of sulfonic group Whitfield's ointment and be dissolved in the 50ml distilled water, be transferred to 250ml and be in the flask of magnetic field environment, middling speed stirred after 1 hour, dripped aniline monomer, used the 50ml distilled water diluting simultaneously, and high-speed stirring 1 hour forms uniform emulsion.Slowly drip assistant for emulsifying agent then, become transparent or semitransparent and have blue light to glow up to whole emulsion system, the generation that indicate microemulsion this moment drips the ammonium persulfate solution that configures again, probably drips in 30min.Along with the adding of initiator, reaction system has experienced from transparent-pale blue-light green-dark green-blackish green variation.Reacted the back emulsion for green, behind the acetone breakdown of emulsion, left standstill 10 hours, suction filtration, vacuum-drying can obtain polyaniline powder.
Comparative Examples 1
In the non-magnetic field environment, prepare polyaniline powder by the processing condition of embodiment 1.
The The performance test results of the material that embodiment 1 and Comparative Examples are 1 sees Table 1:
Table 1
Embodiment 2
Take by weighing a certain amount of Witco 1298 Soft Acid and be dissolved in the 50ml distilled water, be transferred in the 250ml flask that is in magnetic field environment, with the HCl adjusting pH value of 4mol/L, middling speed stirred after 1 hour, dripped aniline monomer, used the 50ml distilled water diluting simultaneously, high-speed stirring 1 hour forms uniform emulsion.Slowly drip assistant for emulsifying agent then, become transparent or semitransparent and have blue light to glow up to whole emulsion system, the generation that indicate microemulsion this moment drips the ammonium persulfate solution that configures again, probably drips in 30min.Along with the adding of initiator, reaction system has experienced from transparent-pale blue-light green-dark green-blackish green variation.Reacted the back emulsion for green, breakdown of emulsion left standstill 10 hours then, and suction filtration, vacuum-drying can obtain polyaniline powder.
Comparative Examples 2
In the non-magnetic field environment, prepare polyaniline powder by the processing condition of embodiment 2.
The The performance test results of the material that embodiment 2 and Comparative Examples are 2 sees Table 2:
Table 2
As seen, no matter be that embodiment 1 compares with Comparative Examples 1, or embodiment 2 compares with Comparative Examples 2, all show: the polyaniline material for preparing in the magnetic field environment has higher electroconductibility and corrosion potential than the polyaniline material for preparing in the non-magnetic field environment.
Claims (3)
1. high conductivity method for preparing polyaniline in the magnetic field environment is characterized in that step is as follows:
1) reaction unit at the preparation electrically conductive polyaniline adds pair of magnets;
2) take by weighing a certain amount of doping agent and be dissolved in the distilled water, be transferred in the reaction unit that is in magnetic field environment;
3) middling speed stirred after 1 hour, dripped aniline monomer, used distilled water diluting simultaneously, and high-speed stirring 1 hour forms uniform emulsion;
4) slowly drip assistant for emulsifying agent, become transparent or semitransparent and have blue light to glow, the generation that indicate microemulsion this moment up to whole emulsion system;
5) drip the ammonium persulfate solution that configures, probably drip in 30min, along with the adding of initiator, reaction system has experienced from transparent-pale blue-light green-dark green-blackish green variation;
6) it is blackish green having reacted the back emulsion, behind the acetone breakdown of emulsion, leaves standstill 10 hours, and suction filtration, vacuum-drying can obtain polyaniline powder.
2. high conductivity method for preparing polyaniline in the magnetic field environment according to claim 1 is characterized in that the aniline monomer that drips in the step 3) has following molecular formula:
In the formula, R
1, R
2, R
3, R
4, R
5Be respectively-H ,-CH
3,-NO
2,-F ,-Cl ,-OCH
3,-C
2H
5,-Br and/or-I.
3. high conductivity method for preparing polyaniline in the magnetic field environment according to claim 1 is characterized in that step 2) in used doping agent can be micromolecular mineral acid and macromolecular organic acid; Micromolecular mineral acid comprises: hydrochloric acid, perchloric acid, sulfuric acid, phosphoric acid; Macromolecular organic acid comprises: sulfonic group Whitfield's ointment, camphorsulfonic acid, Witco 1298 Soft Acid, tosic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100572463A CN100387637C (en) | 2005-08-26 | 2005-08-26 | Preparation method of high conductivity polyaniline in magnetic field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100572463A CN100387637C (en) | 2005-08-26 | 2005-08-26 | Preparation method of high conductivity polyaniline in magnetic field |
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|---|---|
| CN1733821A CN1733821A (en) | 2006-02-15 |
| CN100387637C true CN100387637C (en) | 2008-05-14 |
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| CNB2005100572463A Expired - Fee Related CN100387637C (en) | 2005-08-26 | 2005-08-26 | Preparation method of high conductivity polyaniline in magnetic field |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408633C (en) * | 2006-09-26 | 2008-08-06 | 重庆大学 | Method of re-doping preparing high electric polyaniline under magnetic field |
| CN102161760B (en) * | 2011-06-03 | 2012-07-04 | 重庆大学 | Method for preparing conducting-state polyaniline by sanding |
| CN102702516B (en) * | 2012-05-28 | 2014-02-26 | 东华大学 | Method for preparing polyaniline through multielement doping |
| CN108010735A (en) * | 2018-01-10 | 2018-05-08 | 合肥师范学院 | The preparation of polyaniline/graphene oxide and the application in electrode of super capacitor |
| CN110148530B (en) * | 2019-06-18 | 2021-05-25 | 合肥师范学院 | Preparation method of magnetic field induced nickel chloride/polyaniline supercapacitor electrode material |
| CN116102913A (en) * | 2022-12-29 | 2023-05-12 | 安庆飞凯新材料有限公司 | Water-based static electricity conducting anti-corrosion UV (ultraviolet) curing coating and preparation method and application thereof |
| CN116966615A (en) * | 2023-09-25 | 2023-10-31 | 江苏扬阳化工设备制造有限公司 | Reverse concentration equipment for chemical raw materials |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6479221A (en) * | 1987-09-19 | 1989-03-24 | Sony Corp | Preparation of highly conductive organic thin film |
| JPH0741551A (en) * | 1993-05-25 | 1995-02-10 | Ricoh Co Ltd | Conductive high-molecular compound |
| JPH09208675A (en) * | 1996-01-30 | 1997-08-12 | Ricoh Co Ltd | Organic conductor and its production |
-
2005
- 2005-08-26 CN CNB2005100572463A patent/CN100387637C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6479221A (en) * | 1987-09-19 | 1989-03-24 | Sony Corp | Preparation of highly conductive organic thin film |
| JPH0741551A (en) * | 1993-05-25 | 1995-02-10 | Ricoh Co Ltd | Conductive high-molecular compound |
| JPH09208675A (en) * | 1996-01-30 | 1997-08-12 | Ricoh Co Ltd | Organic conductor and its production |
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| CN1733821A (en) | 2006-02-15 |
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