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Preparation method for spherical polyelectrolyte brush doped conductive polymer

A technology of polyelectrolyte brushes and conductive polymers is applied in the field of nanomaterials to achieve the effects of simple and convenient operation, high electrical conductivity and good electrical conductivity.

Inactive Publication Date: 2012-05-09
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on spherical polyelectrolyte brushes doped with conductive polymers. In view of the dynamic properties of conductive polymers and the complexity of spherical polyelectrolyte brush systems, further research on this aspect remains to be done.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of nano-spherical polyanion electrolyte brushes with controllable molecular structure by surface-initiated polymerization:

[0030] First, monodisperse silica microspheres with a particle size of 100 nm were synthesized by referring to the literature (Kota Sreenivasa Rao, et al. Journal of Colloid and Interface Science 2005;289:125-131). Then add 40mg of γ-methacryloxypropyltrimethoxysilane (KH-570) to 100ml of alcoholic water (10 / 1, V / V) in the mixed solution, and adjust the pH of the system to 4 with hydrochloric acid. After hydrolysis at room temperature for 1 hour, 20 g of nano-silica suspension in isopropanol with a mass fraction of 4% was added to the system, and the reaction was refluxed for 5 hours in a water bath at 70°C. After cooling to room temperature, centrifuge the product with a high-speed centrifuge at 10,000r / min for 30 minutes, discard the upper liquid, and centrifuge and wash the obtained solid 3 times with 10ml / time of absolute et...

Embodiment 2

[0034] According to the literature (Kota Sreenivasa Rao, et al. Journal of Colloid and Interface Science 2005;289:125-131) method to prepare silica microspheres with a particle size of about 50nm; Trimethoxysilane (KH-570) was added to 100ml alcohol water (3 / 1, V / V) In the mixed solution, adjust the pH of the system to 4 with hydrochloric acid, make it hydrolyzed at room temperature for 1 hour, add 20 g of nano-silica isopropanol suspension with a mass fraction of 4% to the system, and put it in a water bath at 50°C Down, reflux reaction for 6 hours. After cooling to room temperature, centrifuge the product at 10,000r / min in a high-speed centrifuge for 30 minutes, discard the upper liquid, and then centrifuge and wash the obtained solid 3 times with 10ml of absolute ethanol to obtain silica microspheres with reactive groups on the surface ; Finally, 10g mass fraction of 4wt% nano-silica isopropanol suspension containing reactive groups and 100ml toluene were added to the the...

Embodiment 3

[0037] According to the literature (Kota Sreenivasa Rao, et al. Journal of Colloid and Interface Science 2005;289:125-131) to prepare silica microspheres with a particle size of about 150nm; Add trimethoxysilane (KH-570) to 100ml alcohol water (6 / 1, V / V) In the mixed solution, adjust the pH of the system to 4 with hydrochloric acid, make it hydrolyzed at room temperature for 1 hour, add 20 g of nano-silica isopropanol suspension with a mass fraction of 4% to the system, and put it in a water bath at 80°C Down, reflux reaction for 4 hours. After cooling to room temperature, centrifuge the product at 10,000r / min in a high-speed centrifuge for 30 minutes, discard the upper liquid, and then centrifuge and wash the obtained solid 3 times with 10ml of absolute ethanol to obtain silica microspheres with reactive groups on the surface ; Finally, 10g mass fraction of 4wt% nano-silica isopropanol suspension containing reactive groups and 100ml toluene were added to the there-necked f...

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Abstract

The invention relates to a preparation method for a spherical polyelectrolyte brush doped conductive polymer nanocomposite material. The method comprises the following steps: preparing a spherical polyelectrolyte brush by surface-initiated polymerization, then introducing to a polymerization system, using an in-situ chemical oxidative polymerization to obtain the spherical polyelectrolyte brush doped nano conductive composite material. The prepared nano conductive composite material has the characteristics of high conductivity, good treatment performance, and simple and convenient operation process.

Description

technical field [0001] The invention relates to a method for preparing a spherical polyelectrolyte brush doped with a conductive polymer, belonging to the field of nanometer materials. Background technique [0002] Conductive polymers were first discovered in 1977 by American scientists Heeger, MacDiarmid and Japanese scientists Shirakawa. After that, a series of new conductive polymers came out one after another. Commonly used conductive polymers are polypyrrole (PPy), polyaniline (PANI), polythiophene and its derivatives. Due to the excellent physical and chemical properties of conductive polymers, they have great application value in the fields of national economy and industrial production. At present, the preparation of conductive polymer materials mainly includes electrochemical synthesis and chemical oxidation. The former generally obtains powder samples, while the latter can directly obtain conductive polymer films. Due to the existence of rigid molecular chains...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08L51/10C08G73/06C08F292/00
Inventor 黎厚斌苏娜易生平刘兴海黄驰
Owner WUHAN UNIV
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