Preparation method of conductive polypyrrole

A conductive polypyrrole technology, which is applied in the preparation of conductive polymers and conductive polypyrrole membranes, can solve the problems of complicated separation, difficult industrial production, and low product purity, and achieve high mechanical strength, improved polymerization efficiency, and relationship significant effect

Inactive Publication Date: 2011-02-23
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the polypyrrole nanowires or membranes obtained by these methods are limited by the electrode area, so it is difficult to produce industrially; the chemical polymerization method has the characteristics of large output and simple preparation, but the product purity is not high, and the separation is complicated. Materials, used for electromagnetic shielding and conductive purposes

Method used

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  • Preparation method of conductive polypyrrole
  • Preparation method of conductive polypyrrole
  • Preparation method of conductive polypyrrole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Electrochemical polymerization at the liquid-liquid interface formed by dichloromethane and water

[0034] First, take a certain amount of the polymerized monomer pyrrole (PY) and the supporting electrolyte perchloric acid (HClO) respectively. 4 ) were dissolved in organic solvent dichloromethane and water, respectively, to prepare 0.01mol / L PY dichloromethane solution and 0.1mol / L HClO 4 Aqueous solution; take a certain volume of PY dichloromethane solution and HClO in turn 4 aqueous solution in figure 1 In the single-port polymerization device shown, a clear liquid-liquid interface is formed; then a certain length of platinum wire working electrode (0.5 mm in diameter) is inserted vertically and slowly into the liquid-liquid interface, and ensure that the platinum wire slightly exceeds the liquid-liquid interface and penetrates deep into the liquid-liquid interface. The oil phase is about 0.5mm, and the platinum sheet auxiliary electrode and the saturated ...

Embodiment 2

[0039] First, take a certain amount of the polymerized monomer pyrrole (PY) and the supporting electrolyte sulfuric acid (H 2 SO 4 ) were dissolved in the organic solvent chloroform and water, respectively, and made into 1mol / L PY chloroform solution and 2mol / L H 2 SO 4 Aqueous solution; take a certain volume of PY chloroform solution and H in turn 2 SO 4 aqueous solution in figure 1 In the single-port polymerization device shown, a clear liquid-liquid interface is formed; then a certain length of platinum wire working electrode (0.5 mm in diameter) is inserted vertically and slowly into the liquid-liquid interface, and ensure that the platinum wire slightly exceeds the liquid-liquid interface and penetrates deep into the liquid-liquid interface. The oil phase is about 0.5mm, and the platinum sheet auxiliary electrode and the saturated calomel (SCE) reference electrode are inserted into the upper HClO 4 In aqueous solution; using constant potential 0.7V (vs SCE) polymeriz...

Embodiment 3

[0042] A certain amount of the polymerized monomer pyrrole (PY) and the supporting electrolyte lithium perchlorate (LiClO) were taken respectively. 4 ) were dissolved in organic solvent chloroform and water, respectively, to prepare 0.05mol / L PY chloroform solution and 0.2mol / L LiClO 4 Aqueous solution; take a certain volume of PY chloroform solution and LiClO in turn 4 aqueous solution in figure 1 In the single-port polymerization device shown, a clear liquid-liquid interface is formed; then a certain length of platinum wire working electrode (0.5 mm in diameter) is inserted vertically and slowly into the liquid-liquid interface, and ensure that the platinum wire slightly exceeds the liquid-liquid interface and penetrates deep into the liquid-liquid interface. The other phase is about 0.5mm, the platinum sheet auxiliary electrode and the saturated calomel (SCE) reference electrode are inserted into the upper layer of LiClO 4 In aqueous solution; polymerized using potentiost...

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Abstract

The invention discloses a preparation method of conductive polypyrrole. The method comprises the following steps of: dissolving a pyrrole monomer in an organic solvent and dissolving a supporting electrolyte in water so as to prepare solutions respectively; transferring the solutions into a reactor in two steps so as to form a liquid-liquid interface; directly inserting a working electrode into the liquid-liquid interface; putting an auxiliary electrode and a reference electrode into solution of supporting electrolyte; and performing electrochemical polymerization by an electrochemical measure. A prepared conductive polypyrrole film is a polymer of pyrrole, which has the thickness of between 1 and 500mu m, the tensile strength of more than or equal to 0.5MPa and high electrical conductivity, and can be used in the aspects of super capacitors, anode and cathode materials of batteries, electromagnetic shielding and the like.

Description

technical field [0001] The invention relates to a preparation method of a conductive polymer, in particular to a preparation method of a conductive polypyrrole film with a unique micro-nano structure, and belongs to the field of polymer materials. Background technique [0002] Conductive polymers, also known as conductive polymers, refer to polymers with electrical conductivity in the range of semiconductors and conductors through doping and other means. This class of polymer backbones contain alternating single and double bonds, resulting in large conjugated π systems. The flow of pi electrons creates the possibility of conducting electricity. Common conductive polymers are: polyacetylene, polythiophene, polypyrrole, polyaniline, polyphenylene, polyphenylene vinylene and polyacetylene. Conductive polymers not only have high electrical conductivity, but also have photoconductive properties, nonlinear optical properties and magnetic properties, which not only have important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C25B3/00C08G73/06
Inventor 朱华汪的华李闽
Owner WUHAN UNIV
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