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Preparation of polyaniline nano-wire/nano-particle compound system

A nanoparticle and nanowire technology is applied in the field of preparation of polyaniline nanowire/nanoparticle composite system, which can solve the problem of polyaniline nanowire/nanoparticle composite system morphology parameters, difficult to control electromagnetic properties, oil phase organic solvent environment Pollution, template agent is not easy to remove and other problems, to achieve the effect of adjustable micro-morphological parameters, avoid environmental pollution, and great practical value

Active Publication Date: 2008-11-12
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The methods currently used to prepare polyaniline nanowire / nanoparticle composite systems are mainly template method, self-assembly method, interfacial polymerization, seed polymerization and other methods. These methods generally have the following problems: (1) the method used after the aniline polymerization is completed The template agent is not easy to remove; (2) the environmental pollution of the oil phase organic solvent in the reaction medium; (3) the production cost is high; (4) the morphology parameters and electromagnetic properties of the polyaniline nanowire / nanoparticle composite system are difficult to control, etc.

Method used

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  • Preparation of polyaniline nano-wire/nano-particle compound system
  • Preparation of polyaniline nano-wire/nano-particle compound system
  • Preparation of polyaniline nano-wire/nano-particle compound system

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) 0.1 part of sucrose octaacetate is dissolved and dispersed 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 1.0ml / min~5.0ml / min, after the dropwise addition, continue to react for 3~12 hours, the reaction temperature is controlled 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...

Embodiment 2

[0035] (1) water and water-soluble organic solvent are mixed in a volume ratio of 1:1 to form a homogeneous system of 70 parts;

[0036] (2) Dissolving 2 parts of sucrose octaacetate in the above system;

[0037] (3) 5 parts of hydrochloric acid are dissolved in the above-mentioned solution under the condition of stirring;

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

[0039] (5) Dissolving 10 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 1:1 by volume to form component B;

[0040] (6) Continuously add component B dropwise to component A under stirring condition, the dropping speed is 1.0ml / min~5.0ml / min; continue to react for 3~12 hours after the dropwise addition, the reaction temperature is controlled at Between 0°C and 5°C;

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

Embodiment 3

[0045] (1) 3 parts of sucrose octaacetate are dissolved and dispersed in 100 parts of water reaction medium;

[0046] (2) Dissolve 5 parts of hydrochloric acid in the above-mentioned solution under stirring condition;

[0047] (3) Add 2 parts of aniline under stirring condition to form component A;

[0048] (4) 5 parts of ammonium persulfate are dissolved in 20 parts of water to form component B;

[0049] (5) Add component B to component A drop by drop continuously under stirring condition, the dropping rate is 1.0ml / min~5.0ml / min, after the dropwise addition, continue to react for 3~12 hours, the reaction temperature is controlled Between 0°C and 5°C;

[0050] (6) After filtering the reaction product, wash with methanol, acetone and deionized water respectively until the filtrate is colorless;

[0051](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...

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Abstract

The invention relates to a method for preparing a polyaniline nano wire / nano particle complex system. The method is characterized in that the method takes fat-soluble sucrose octaacetate containing eight branch chains as a template and a homogeneous system formed by water and water-soluble organic solvents as the reaction medium and prepares a polyaniline nano wire / nano particle complex system by utilizing a template polymerization method and taking hydrochloric acids as doping acids, which facilitates the utilization of branch chains of sucrose octaacetate molecules to initiate the stereotactic polymerization of aniline to prepare the polyaniline nano wire / nano particle complex system; moreover, 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 emulsion polymerization; 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 composite materials and having better use value.

Description

technical field [0001] The invention relates to a preparation method of a polyaniline nanowire / nanoparticle composite system, which is composed of fat-soluble sucrose octaacetate containing eight branched chain structures as a template, hydrochloric acid as a dopant, water and a water-soluble organic solvent The homogeneous system is the reaction medium, which is prepared through a series of steps by template polymerization. Background technique [0002] Polyaniline nanostructures such as nanowires, nanotubes, nanoparticles, etc. have different properties from ordinary polyaniline random particles. When the characteristic dimension of the material reaches the nanometer size, its performance will change significantly compared to the bulk material. In the manufacture of nano Functional devices and other aspects play an important role. In recent years, researchers have made great progress in the preparation of nano-polyaniline, but the preparation of polyaniline nanowire / nanop...

Claims

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Application Information

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IPC IPC(8): C08G73/02
Inventor 齐暑华王东红邱华黄英
Owner NORTHWESTERN POLYTECHNICAL UNIV
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