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Preparation method of spiral cylindrical polypyrrole

A polypyrrole and columnar technology, applied in the field of polypyrrole preparation, can solve the problems of increasing the complexity of the synthesis process, unfavorable performance improvement and popularization and application of polypyrrole products, mechanical or chemical damage, etc., so as to avoid mechanical or chemical damage, manufacture Low cost and stable product performance

Inactive Publication Date: 2015-12-02
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthesis method of this helical polypyrrole product needs to make a hard template in advance, which increases the complexity of the synthesis process. Or chemical damage, these are not conducive to the performance improvement and application of polypyrrole products

Method used

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  • Preparation method of spiral cylindrical polypyrrole
  • Preparation method of spiral cylindrical polypyrrole
  • Preparation method of spiral cylindrical polypyrrole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of helical columnar polypyrrole, its concrete practice is:

[0027] A, preparation of hydrosol: add sodium indigo disulfonate into distilled water, stir to fully dissolve sodium indigo disulfonate, obtain sodium indigo disulfonate hydrosol, and the molar concentration of sodium indigo disulfonate in the hydrosol is 0.0050 mol / L;

[0028] B. Preparation of the reaction mixture: take 180ml of the hydrosol obtained in step a, then add 1.38ml of pyrrole, and then magnetically stir for 15min in an ice bath until the temperature of the mixture drops to 0°C to obtain the reaction mixture;

[0029] C, the preparation of initiator solution: FeCl 3 ·6H 2 O was added to distilled water and stirred well until the FeCl 3 ·6H 2 O is completely dissolved, and the initiator solution is obtained, in which FeCl 3 The molar concentration is 0.05mol / L;

[0030] D. Pyrrole polymerization reaction: 20 ml of the initiator solution prepared in step c was adde...

Embodiment 2

[0033] A kind of preparation method of helical columnar polypyrrole, its concrete practice is:

[0034] A, preparation of hydrosol: add sodium indigo disulfonate into distilled water, stir to fully dissolve sodium indigo disulfonate, obtain sodium indigo disulfonate hydrosol, and the molar concentration of sodium indigo disulfonate in the hydrosol is 0.0025 mol / L;

[0035] B. Preparation of the reaction mixture: take 180ml of the hydrosol obtained in step a, then add 1.38ml of pyrrole, and then magnetically stir for 25min in an ice bath until the temperature of the mixture drops to 5°C to obtain the reaction mixture;

[0036] C, the preparation of initiator solution: FeCl 3 ·6H 2 O was added to distilled water and stirred well until the FeCl 3 ·6H 2 O is completely dissolved, and the initiator solution is obtained, in which FeCl 3 The molar concentration is 0.05mol / L;

[0037] D. Polymerization of pyrrole: 20 ml of the initiator solution prepared in step c was added drop...

Embodiment 3

[0040] A kind of preparation method of helical columnar polypyrrole, its concrete practice is:

[0041] A, preparation of hydrosol: add sodium indigo disulfonate into distilled water, stir to fully dissolve sodium indigo disulfonate, obtain sodium indigo disulfonate hydrosol, and the molar concentration of sodium indigo disulfonate in the hydrosol is 0.0050 mol / L;

[0042]B. Preparation of the reaction mixture: take 180ml of the hydrosol obtained in step a, then add 1.38ml of pyrrole, and then magnetically stir for 20min in an ice bath until the temperature of the mixture drops to 3°C to obtain the reaction mixture;

[0043] C, the preparation of initiator solution: FeCl 3 ·6H 2 O was added to distilled water and stirred well until the FeCl 3 ·6H 2 O is completely dissolved, and the initiator solution is obtained, in which FeCl 3 The molar concentration is 0.07mol / L;

[0044] D. Polymerization of pyrrole: 20 ml of the initiator solution prepared in step c was added dropw...

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Abstract

The invention relates to a preparation method of spiral cylindrical polypyrrole, which mainly comprises the following steps: A. preparing a hydrosol in which the molar concentration of sodium indigo disulfonate is 0.0025-0.0075 mol / L; B. taking 180ml of hydrosol, adding 1.38ml of pyrrole, and magnetically stirring in a 0-7-DEG C ice bath for 15-25 minutes to obtain a reaction mixed solution; C. preparing an initiator solution in which the molar concentration of FeCl3 is 0.03-0.15 mol / L; D. dropwisely adding 20ml of the initiator solution into the reaction mixed solution, magnetically stirring in a 0-7-DEG C ice bath to react for 4.5-9 hours, and carrying out vacuum filtration to obtain a solid; and E. cleaning and drying. The spiral cylindrical polypyrrole prepared by the method has the diameter of micrometer to nanometer magnitude, has better magnetic loss effect and nano loss effect on electromagnetic waves, and has the advantages of simple preparation technique, low manufacturing cost and stable product performance.

Description

technical field [0001] The invention relates to a preparation method of polypyrrole, in particular to a preparation method of polypyrrole with helical columnar microscopic morphology. Background technique [0002] In the last 20 to 30 years, conductive polymers have gradually developed into a research field with great research value and much attention. Among them, polypyrrole is a conductive polymer with a π-conjugated structure. It has high practical application value due to its good thermal and chemical stability, high electrical conductivity, and easy synthesis. , can be widely used in the development of sensor materials, metal anti-corrosion materials, absorbing materials and other functional materials. The popularization and application effect of polypyrrole in the above functional materials field is directly affected by its physical properties, while the physical properties of polypyrrole are mainly affected by its chemical structure factors such as its doping degree,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06
Inventor 胡书春李燕斌韩洪川屈圆圆蒋彦嫚肖达张玲玲翟晶
Owner SOUTHWEST JIAOTONG UNIV
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