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Preparation method of dispersible polypyrrole copolymer

A technology of polypyrrole copolymer and copolymer, which is applied in the direction of sustainable manufacturing/processing, climate sustainability, chemical industry, etc., can solve the problems of complex process and narrow applicable range, and achieve simple preparation process and simplified operation steps And experimental equipment, the effect of raw materials are easy to get

Active Publication Date: 2021-05-28
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to overcome the application limitations of the existing polypyrrole copolymer preparation method such as complicated process and narrow applicable range, and provide a simple and efficient preparation method of dispersible polypyrrole copolymer

Method used

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  • Preparation method of dispersible polypyrrole copolymer
  • Preparation method of dispersible polypyrrole copolymer
  • Preparation method of dispersible polypyrrole copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Mix polyethylene glycol 600 (PEG 600) with water, stir for 15 minutes; add ferrous chloride and pyrrole monomer, and stir for 15 minutes to obtain a mixed solution; the concentration of PEG600 in the mixed solution is 15wt%, The concentration of pyrrole monomer is 0.15mmol / mL, and the concentration of ferrous chloride is 0.3mmol / mL;

[0041] (2) The mixed solution obtained above was irradiated in a cobalt-60 irradiation chamber at a dose rate of 2.94 kGy / hour at room temperature and in an air atmosphere. When the cumulative absorbed dose reaches 50kGy, take out the reaction solution sample;

[0042] (3) After the reaction solution was centrifuged for 5 minutes (10000 rpm) with a high-speed centrifuge, the lower precipitate was collected and redispersed in deionized water. Repeat above-mentioned centrifugation and wash 3 times, obtain polypyrrole-co-PEG600 copolymer through freeze-drying then.

[0043] The polypyrrole-co-PEG600 copolymer in Example 1 was analyzed by ...

Embodiment 2

[0049] (1) Mix polyvinyl alcohol 1788 type (PVA-1788) with water, and obtain a clear PVA aqueous solution with conventional preparation operations; then add ferrous chloride and pyrrole monomer, and stir for 15 minutes to obtain a mixed solution; in the resulting mixed solution The concentration of PVA is 5wt%, the concentration of pyrrole monomer is 0.1mmol / mL, and the concentration of ferrous chloride is 0.2mmol / mL;

[0050] (2) The mixed solution obtained above was irradiated in a cobalt-60 irradiation chamber at a dose rate of 0.72 kGy / hour at room temperature and in an air atmosphere. When the accumulated absorbed dose reaches 16.7kGy, take out the reaction solution sample;

[0051] (3) After the reaction solution was centrifuged for 5 minutes (10000 rpm) with a high-speed centrifuge, the lower precipitate was collected and redispersed in deionized water. Repeat above-mentioned centrifugation and wash 3 times, then obtain polypyrrole-co-PVA copolymer through lyophilizati...

Embodiment 3

[0055] (1) Sodium carboxymethylcellulose (CMC) is stirred and mixed with water, and the CMC aqueous solution is prepared by conventional methods; Add cerium sulfate and pyrrole monomer subsequently, and stir to obtain mixed solution for 5 minutes; The concentration of CMC in this mixed solution is: 0.5wt%, the concentration of pyrrole monomer is 0.1mmol / mL, the concentration of cerium sulfate is 0.02 mmol / mL;

[0056] (2) The mixed solution obtained above was irradiated in a cobalt-60 irradiation chamber at a dose rate of 1.3 kGy / hour at room temperature and in an air atmosphere. When the accumulated absorbed dose reaches 30kGy, take out the reaction solution sample;

[0057] (3) After the reaction solution was centrifuged for 5 minutes (10000 rpm) with a high-speed centrifuge, the lower precipitate was collected and redispersed in DMAc. Repeat above-mentioned centrifugation and washing 3 times, obtain polypyrrole-co-CMC copolymer through lyophilization then.

[0058] Utiliz...

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Abstract

The invention relates to a preparation method of a solution-dispersible polypyrrole copolymer. The method comprises the following steps: mixing a soluble polymer, an initiator and a pyrrole monomer under an air condition, and carrying out irradiation treatment by utilizing high-energy rays to obtain the polypyrrole copolymer. Compared with the prior art, the raw materials, the pyrrole monomer, the soluble polymer, the initiator and the like used in the method are commercially available reagents easy to obtain, special treatment is not needed, the reaction condition is mild and easy to control, one-step completion is achieved, and the method has the advantages of being easy and convenient to operate, capable of saving energy consumption, environmentally friendly, wide in application range and the like; and the polypyrrole copolymer prepared by the method can be stably dispersed in water or most of organic solvents, the defect that polypyrrole is insoluble and non-meltable is overcome, and the polypyrrole material is endowed with good processability.

Description

technical field [0001] The invention relates to the technical field of organic materials, in particular to a preparation method of a dispersible polypyrrole copolymer. Background technique [0002] Conductive polymers have become the focus of material science research since their discovery, and are widely used in fields such as electromagnetic shielding, energy, optoelectronic devices, and metal anticorrosion (Chem.Soc.Rev., 2009, 38, 2149). Polypyrrole (polypyrrole, abbreviated as PPy), also known as pyrrole black, is a kind of conductive polymer widely studied at present. It is obtained by redox polymerization of pyrrole monomer. Advantages (Polymers, 2016, 8, 373; ACSnano, 2013, 7, 10139). However, polypyrrole itself is insoluble and difficult to process, which greatly limits the wide application of polypyrrole (React. Funct. Polym., 2001, 47, 125). Therefore, modifying the molecular structure of modified polypyrrole, endowing it with dispersibility in various solvents,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06
CPCC08G73/0611Y02P20/10
Inventor 张伯武谷雨李景烨虞鸣
Owner SHANGHAI NORMAL UNIVERSITY
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