Preparation method of conductive polypyrrole

A conductive poly-pyrrole technology, applied in the direction of electrolytic components, electrolytic process, electrolytic organic production, etc., can solve the problems of difficult industrial production, low product purity, complicated separation, etc., and achieve high polymerization efficiency, high mechanical strength, and significant relationship Effect

Inactive Publication Date: 2012-08-08
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 polymerized monomer pyrrole (PY) and supporting electrolyte perchloric acid (HClO 4 ) were dissolved in organic solvent dichloromethane and water respectively, and were made into 0.01mol / L PY dichloromethane solution and 0.1mol / L HClO 4 aqueous solution; sequentially take a certain volume of PY dichloromethane solution and HClO 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 vertically and slowly inserted into the liquid-liquid interface, and the platinum wire is ensured to slightly exceed the liquid-liquid interface and penetrate deep into the liquid-liquid interface. The oil phase is about 0.5mm, the platinum auxiliary electrode and the saturated calomel (SCE) referen...

Embodiment 2

[0039] Take a certain amount of polymerized monomer pyrrole (PY) and supporting electrolyte sulfuric acid (H 2 SO 4 ) were dissolved in organic solvent chloroform and water respectively, and were made into 1mol / L PY chloroform solution and 2mol / L H 2 SO 4 aqueous solution; take a certain volume of PY trichloromethane solution and H 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 vertically and slowly inserted into the liquid-liquid interface, and the platinum wire is ensured to slightly exceed the liquid-liquid interface and penetrate deep into the liquid-liquid interface. The oil phase is about 0.5mm, and the platinum auxiliary electrode and saturated calomel (SCE) reference electrode are inserted into the upper layer of HClO 4 In aqueous solution; polymerized at a constant potential of 0.7V (vs SCE), a self-suppo...

Embodiment 3

[0042] Take a certain amount of polymerized monomer pyrrole (PY) and supporting electrolyte lithium perchlorate (LiClO 4 ) were dissolved in organic solvent chloroform and water respectively, and were made into 0.05mol / L PY chloroform solution and 0.2mol / L LiClO 4 aqueous solution; take a certain volume of PY chloroform solution and LiClO 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 vertically and slowly inserted into the liquid-liquid interface, and the platinum wire is ensured to slightly exceed the liquid-liquid interface and penetrate deep into the liquid-liquid interface. The other phase is about 0.5mm, the platinum auxiliary electrode and the saturated calomel (SCE) reference electrode are inserted into the upper layer of LiClO 4 In aqueous solution; use constant potential 1.2V (vs SCE) to polymerize. A self-supp...

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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, belonging to the field of polymer materials. Background technique [0002] Conductive polymers, also known as conductive polymers, refer to polymers whose electrical conductivity is within the range of semiconductors and conductors through doping and other means. This type of polymer backbone contains alternating single and double bonds, thus forming a large conjugated π system. The flow of π electrons creates the possibility of conduction. 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 scient...

Claims

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Application Information

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