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Preparation method of polyaniline-polydopamine composite material

A polydopamine and composite material technology, applied in the field of composite materials, can solve the problems of poor stability and poor conductivity, and achieve the effects of good adhesion, high conductivity and easy synthesis

Inactive Publication Date: 2017-05-24
ZHONGSHAN HOSPITAL XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has disadvantages such as poor conductivity and poor stability in strong polar organic solvents.

Method used

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  • Preparation method of polyaniline-polydopamine composite material
  • Preparation method of polyaniline-polydopamine composite material
  • Preparation method of polyaniline-polydopamine composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dissolve a certain amount of ammonium persulfate in 5mL of sulfuric acid solution to obtain a 0.1M ammonium persulfate solution; add 0.05g of dopamine into 5mL of 0.5M sulfuric acid solution, then add 120μL of aniline monomer dropwise and stir for 30min. Finally obtain the mixed acidic solution containing dopamine and aniline of certain concentration; Then ammonium persulfate solution prepared is added in the above-mentioned mixed acidic solution by the volume ratio of 1: 1, under air condition with the speed of 1000rpm violent stirring (magnetic force Stirring) for 18 hours, after the reaction was completed, a polyaniline-polydopamine mixed solution was obtained; after that, the above-mentioned reacted solution was centrifugally washed with deionized water for 3 times at a speed of 12000 r / min, and dried in an oven at 60°C. Product, obtain described polyaniline-polydopamine composite material, the scanning electron microscope picture of gained polyaniline-polydopamine c...

Embodiment 2

[0029] Dissolve a certain amount of ammonium persulfate in 5mL of sulfuric acid solution to obtain a 0.1M ammonium persulfate solution; add 0.15g of dopamine into 5mL of 0.5M sulfuric acid solution, then add 120μL of aniline monomer dropwise and stir for 30min. Finally obtain the mixed acidic solution containing dopamine and aniline of certain concentration; Then ammonium persulfate solution prepared is added in the above-mentioned mixed acidic solution by the volume ratio of 1: 1, under air condition with the speed of 1500rpm violent stirring (mechanical Stirring or magnetic stirring) for 24 hours, after the reaction is completed, a polyaniline-polydopamine mixed solution is obtained; after that, the above-mentioned reacted solution is centrifugally washed with deionized water for 3 times at a speed of 16000r / min, and then dried in an oven at 60°C The centrifuged product obtained the polyaniline-polydopamine composite material. Through the dispersibility test of the material ...

Embodiment 3

[0031] Dissolve a certain amount of ammonium persulfate in 5mL of sulfuric acid solution to obtain a 0.1M ammonium persulfate solution; add 0.02g of dopamine into 5mL of 0.5M sulfuric acid solution, then add 120μL of aniline monomer dropwise and stir for 30min. Finally obtain the mixed acidic solution containing dopamine and aniline of certain concentration; Then ammonium persulfate solution prepared is added in the above-mentioned mixed acidic solution by the volume ratio of 1: 1, under air condition with the speed of 1500rpm violent stirring (mechanical Stirring or magnetic stirring) for 18 hours, after the reaction is completed, a polyaniline-polydopamine mixed solution is obtained; after that, the above-mentioned reacted solution is centrifugally washed with deionized water for 3 times at a speed of 12000r / min, and dried in an oven at 60°C The centrifuged product obtained the polyaniline-polydopamine composite material. After the prepared composite material was pressed int...

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Abstract

The invention discloses a preparation method of a polyaniline-polydopamine composite material. The preparation method comprises the following steps: (1) dissolving ammonium persulfate into deionized water or an acidic solution to obtain an ammonium persulfate solution; (2) adding dopamine into the acidic solution, dropwise adding an aniline monomer and stirring to obtain a mixed acidic solution; (3) adding the ammonium persulfate solution obtained in the step (1) into the mixed acidic solution obtained in the step (2) according to the volume ratio of 1:1, and performing stirring reaction under the air condition to obtain the polyaniline-polydopamine mixed solution after the reaction; (4) centrifugally washing the polyaniline-polydopamine mixed solution obtained in the step (3) and drying to obtain the polyaniline-polydopamine composite material. The polyaniline-polydopamine composite material prepared by the method has a wide application prospect in the fields of biological medical materials, electrode material surface modification and the like.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method of a polyaniline-polydopamine composite material. Background technique [0002] Conductive polymers (ICPs) are a class of polymer materials that are converted from insulators to conductors by chemically or electrochemically doping polymers with conjugated π bonds. Its characteristic is that the conductivity at room temperature can be changed in the range of insulator-semiconductor-metal state by controlling the preparation conditions (10 -9 S / cm~10 5 S / cm). This property is unattainable by any other class of materials discovered so far. At present, more conductive polymers are studied, such as polypyrrole, polyaniline, and polythiophene. Among them, polyaniline is widely used due to its simple synthesis, good air stability, and excellent electrical properties. However, the commonly synthesized polyaniline materials have disadvanta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08L79/06C08G73/06C08G73/02
CPCC08G73/0266C08G73/0672C08L79/02C08L79/06C08L2205/02
Inventor 张忠谭吉林葛东涛石巍孙亚楠
Owner ZHONGSHAN HOSPITAL XIAMEN UNIV