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Size-controllable polypyrrole nano particle and preparation method thereof

A polypyrrole nanometer and particle technology, which is applied in the field of size-controllable polypyrrole nanoparticle and its preparation, can solve problems such as poor processing performance, and can solve the problems of difficult processing, particle diameter and conductivity height, particle diameter and conductivity rate controllable effect

Inactive Publication Date: 2012-07-04
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to propose a size-controllable polypyrrole nanoparticle and its Preparation

Method used

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  • Size-controllable polypyrrole nano particle and preparation method thereof
  • Size-controllable polypyrrole nano particle and preparation method thereof
  • Size-controllable polypyrrole nano particle and preparation method thereof

Examples

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Embodiment 1

[0081] A preparation method of size-controllable polypyrrole nanoparticles without adding an initiator, that is, the concentration of the initiator 2,4-diaminodiphenylamine is 0%, using methanol as the first solvent, and using anhydrous trichloride Iron is an oxidizing agent, and pure water is used as a second solvent, and its preparation method specifically includes the following steps:

[0082] (1) Dissolve 250mg pyrrole monomer in 150mL alcohol to form pyrrole monomer alcohol solution;

[0083] Wherein, described alcohol is methanol;

[0084] (2) Dissolve 600mg of oxidant in 150mL of pure water to form an aqueous solution of oxidant;

[0085] Described oxidant is ferric chloride;

[0086] (3), cooling the pyrrole monomer solution obtained in step (1) and the oxidant aqueous solution obtained in step (2) to 0 o C, then quickly mix, shake the mixture vigorously for about 10s, then leave it to react for 24 hours, and obtain the reaction solution after the reaction is ...

Embodiment 2

[0091] A method for preparing size-controllable polypyrrole nanoparticles, a method for preparing size-controllable polypyrrole nanoparticles, that is, 2,4-diaminodiphenylamine with a concentration of 2% as the initiator and methanol as the first solvent, Using anhydrous ferric chloride as an oxidant and pure water as a second solvent, the preparation method specifically includes the following steps:

[0092] (1) Dissolve 250 mg of pyrrole monomer and 15 mg of initiator 2,4-diaminodiphenylamine in 150 mL of alcohol solution to form a monomer and initiator blend solution;

[0093] Wherein, described alcohol is methanol;

[0094] Wherein, the molar ratio of the pyrrole monomer to the initiator is 49:1, that is, the initiator concentration is 2%;

[0095] (2) Dissolve 600mg of oxidant in 150mL of pure water to form an aqueous solution of oxidant;

[0096] Described oxidant is ferric chloride;

[0097] (3) Cool the blended solution of pyrrole monomer and initiator obtained i...

Embodiment 3

[0102] A method for preparing size-controllable polypyrrole nanoparticles, a method for preparing size-controllable polypyrrole nanoparticles, that is, using 10% 2,4-diaminodiphenylamine as the initiator and methanol as the first solvent, Using anhydrous ferric chloride as an oxidant and pure water as a second solvent, the preparation method specifically includes the following steps:

[0103] (1) Dissolve 250 mg of pyrrole monomer and 75 mg of initiator 2,4-diaminodiphenylamine in 150 mL of alcohol solution to form a monomer and initiator blend solution;

[0104] Wherein, described alcohol is methanol;

[0105] Wherein, the molar ratio of the pyrrole monomer to the initiator is 9:1, that is, the initiator concentration is 10%;

[0106] (2) Dissolve 600mg of oxidant in 150mL of pure water to form an aqueous solution of oxidant;

[0107] Described oxidizing agent is anhydrous ferric chloride;

[0108] (3), cooling the pyrrole monomer solution obtained in step (1) and the o...

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Abstract

The invention discloses a size-controllable polypyrrole nano particle and a preparation method thereof. The preparation method comprises the following steps of: dissolving pyrrole and an initiator into a first solvent to form blended solution of pyrrole monomer and the initiator; dissolving an oxidant into a second solvent to form oxidant solution; then mixing the blended solution of the pyrrole monomer and the initiator with the oxidant solution, swaying violently, standing, and after reaction is complete, carrying out centrifugation, washing, drying and the like; and finally, obtaining the size-controllable polypyrrole nano particle. According to the size-controllable polypyrrole nano particle and the preparation method thereof, the preparation step is simple, high in efficiency and high in controllability; the particle size of the obtained size-controllable polypyrrole nano particle is 80-600nm, and the electric conductivity of the obtained size-controllable polypyrrole nano particle is 10<-2>-10<-7>S / cm. The size-controllable polypyrrole nano particle and the preparation method thereof can be used for the application fields such as sensors, actuating devices, artificial muscles, overpotential containers, electrochromic color-changing windows, fuel cells, functional coatings and ultrafiltration membranes.

Description

technical field [0001] The invention belongs to the technical field of preparation of conductive polymer nanomaterials, and in particular relates to a size-controllable polypyrrole nanoparticle and a preparation method thereof. Background technique [0002] Polypyrrole (polypyrrole, PPy) has attracted widespread attention due to its good environmental stability, simple synthesis and high conductivity (Wang L X, Li X G, Yang Y L. Preparation, properties and applications of polypyrroles [J]. Reactive and Functional Polymers, 2001, 47(2): 125-139.). The unique large π bond of polypyrrole endows it with strange photoelectromagnetic effect, electrochemical effect, electrochemical mechanical actuation effect, etc.; at the same time, the transmission of free electrons in polypyrrole molecular chains is affected by specific environments such as acidity, humidity, gas atmosphere, and chemical bonds. Combined control affects the size of its conductivity. Therefore, polypyrrole has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06
Inventor 廖耀祖钱微王霞李晓燕李颖余灯广
Owner UNIV OF SHANGHAI FOR SCI & TECH
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