Preparation of polyaniline nano-lamellar structure

A technology of nanosheets and polyaniline, which is applied in the field of preparation of polyaniline nanosheets, can solve the problems of difficult control of polyaniline nanosheets structure morphology parameters, environmental pollution of oil-phase organic solvents, high production costs, etc., to achieve Adjustable microscopic shape parameters, avoiding environmental pollution, and excellent electromagnetic properties

Active Publication Date: 2010-08-25
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
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Problems solved by technology

In recent years, researchers have made great progress in the preparation of nano-polyaniline, but it is still impossible to prepare polyaniline nanosheet structures with controllable morphological parameters.
[0003] The methods currently used to prepare polyaniline nanosheet structures are mainly template methods, self-assembly methods, etc., and these methods generally have the following problems: (1) the template agent used after the aniline polymerization is completed is not easy to remove; (2) the oil in the reaction medium (3) High production cost; (4) Difficult to control the morphology parameters of polyaniline nanosheet structure

Method used

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  • Preparation of polyaniline nano-lamellar structure
  • Preparation of polyaniline nano-lamellar structure
  • Preparation of polyaniline nano-lamellar structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Dissolving and dispersing 0.1 part of retinol in 30 parts of water reaction medium;

[0027] (2) Dissolve 5 parts of hydrochloric acid in the above-mentioned solution under stirring condition;

[0028] (3) Add 2 parts of aniline under stirring condition to form component A;

[0029] (4) 5 parts of ammonium persulfate are dissolved in 20 parts of water to form component B;

[0030] (5) Add component B to component A drop by drop continuously under stirring condition, the dropping rate is 0.5ml / min~5.0ml / min, continue to react for 4~10 hours after dropping, the reaction temperature is controlled at Between 0°C and 5°C;

[0031] (6) After filtering the reaction product, wash with methanol, acetone and deionized water respectively until the filtrate is colorless;

[0032] (7) carry out secondary doping with hydrochloric acid aqueous solution, the hydrochloric acid concentration that secondary doping is used is 0.5M~4.0M, and the time of doping is 3~12 hours;

[0033...

Embodiment 2

[0035] (1) water and water-soluble organic solvent are mixed in the ratio of 1:1 by volume to form 50 parts of homogeneous system;

[0036] (2) Dissolving 3 parts of retinol in the above system;

[0037] (3) 10 parts of hydrochloric acid are dissolved in the above-mentioned solution under the condition of stirring;

[0038] (4) Add 5 parts of aniline under stirring condition to form component A;

[0039] (5) Dissolving 15 parts of ammonium persulfate in 30 parts of a homogeneous system formed by mixing water and a water-soluble organic solvent in a ratio of 1:1 by volume to form component B;

[0040] (6) Add component B dropwise to component A continuously under stirring condition, the dropping speed is 0.01ml / min~5.0ml / min; Between 0°C and 5°C;

[0041] (7) After filtering the reaction product, wash with methanol, acetone and deionized water respectively until the filtrate is colorless;

[0042] (8) carry out secondary doping with hydrochloric acid aqueous solution, the h...

Embodiment 3

[0045] (1) water and water-soluble organic solvent are mixed in the ratio of volume ratio 2: 3 to form 50 parts of homogeneous system;

[0046] (2) Dissolving 2 parts of retinol in the above system;

[0047] (3) 8 parts of hydrochloric acid are dissolved in the above-mentioned solution under the condition of stirring;

[0048] (4) Add 2 parts of aniline under stirring condition to form component A;

[0049] (5) Dissolving 5 parts of ammonium persulfate in 20 parts of a homogeneous system formed by mixing water and a water-soluble organic solvent in a ratio of 2:3 by volume to form component B;

[0050] (6) Add component B dropwise to component A continuously under stirring condition, the dropping speed is 0.01ml / min~5.0ml / min; Between 0°C and 5°C;

[0051] (7) After filtering the reaction product, wash with methanol, acetone and deionized water respectively until the filtrate is colorless;

[0052] (8) carry out secondary doping with hydrochloric acid aqueous solution, the...

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Abstract

The invention relates to a method for preparing the polyaniline nano-lamina structure, which takes fat-soluble retinal containing aromatic big pi bond, carbon-carbon conjugated double bond and hydroxyl group as a template and a homogeneous system formed by water and water-soluble organic solvents as reaction media and prepares a polyaniline nano-lamina structure with controllable morphological parameters and desirable electromagnetic performance by utilizing the template polymerization method and taking hydrochloric acids as doping acids. For the preparation of the polyaniline nano-lamina structure, the method facilitates the initiation of the stereotactic polymerization of aniline by utilizing the aromatic big pi bond and the carbon-carbon double bond functional group contained in the retinal molecule, and the use of water and water-soluble organic solvents as a reaction system avoids the environmental pollution of fat phase organic solvents in interfacial polymerization and emulsionpolymerization; moreover, the water-soluble organic solvents are also good solvents for a plurality of polymers, thereby providing a new research method for preparing polyaniline conductive compositematerials and having better use value.

Description

technical field [0001] The present invention relates to a preparation method of polyaniline nanosheet structure, which uses fat-soluble retinol containing aromatic large π bonds, carbon-carbon conjugated double bonds and hydroxyl functional groups as a template agent, hydrochloric acid as a dopant, water and A homogeneous system composed of a water-soluble organic solvent is used as a reaction medium, and is prepared through a series of steps by using a template polymerization method. Background technique [0002] When the characteristic dimension of the polyaniline nanosheet structure reaches the nanometer size, its performance will change significantly compared with the bulk material, and it plays an important role in the manufacture of nano-functional devices. In recent years, researchers have made great progress in the preparation of nano-polyaniline, but it is still impossible to prepare polyaniline nanosheet structures with controllable morphological parameters. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02
Inventor 齐暑华王东红黄英
Owner NORTHWESTERN POLYTECHNICAL UNIV
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