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A kind of preparation method of polyaniline hollow sphere

A hollow sphere and polyaniline technology, which is applied in the field of preparation of polyaniline hollow spheres, can solve the problems of requiring a low temperature environment and a long reaction time, and achieves the effects of simple experimental equipment, good appearance, and shortened preparation time.

Active Publication Date: 2022-04-08
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of polyaniline hollow spheres, to solve the problem that the current preparation method has a long reaction time and requires a low temperature environment

Method used

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  • A kind of preparation method of polyaniline hollow sphere
  • A kind of preparation method of polyaniline hollow sphere
  • A kind of preparation method of polyaniline hollow sphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of myristic acid microemulsion:

[0031] In 30 ml of deionized water, 0.2 g of myristic acid and 0.1 g of gum arabic were added to prepare myristic acid microemulsion, and then the microemulsion was emulsified in a water bath at 2000 r / min and 65° C. for 2 h.

[0032] (2) Preparation of ammonium persulfate aqueous solution:

[0033] An ammonium persulfate aqueous solution was prepared by dissolving 1.96 g of ammonium persulfate in 30 ml of water.

[0034] (3) Preparation of polyaniline hollow spheres

[0035] Add 0.8 g of aniline to the tetradecanoic acid microemulsion obtained in (1) at 85 °C with a stirring speed of 600 r / min, and after stirring for 30 min, add the prepared ammonium persulfate aqueous solution dropwise and keep for 3 h. The obtained reactants were washed three times with deionized water and absolute ethanol respectively, and then put into an oven for drying to obtain polyaniline hollow spheres.

[0036] The infrared spectroscopic an...

Embodiment 2

[0042] (1) Myristic acid GA microemulsion

[0043] In 30ml of deionized water, 1.0g of myristic acid and 0.2g of gum arabic were added to prepare myristic acid microemulsion, and then the microemulsion was emulsified in a water bath at 1000r / min and 65°C for 2h.

[0044] (2) Ammonium persulfate aqueous solution

[0045] 2.45 g of ammonium persulfate was dissolved in 30 ml of water to prepare an aqueous solution of ammonium persulfate.

[0046] (3) Preparation of polyaniline hollow spheres

[0047] In the myristic acid microemulsion obtained in (1), 1.0 g of aniline was added at 65° C. with a stirring speed of 600 r / min, and after stirring for 30 min, ammonium persulfate aqueous solution was added dropwise, followed by reaction for 3 h. The obtained reactants were washed three times with deionized water and absolute ethanol respectively, and dried in an oven to obtain polyaniline hollow spheres.

[0048] The scanning electron micrograph of the polyaniline hollow sphere of ab...

Embodiment 3

[0050] (1) Myristic acid GA microemulsion

[0051] In 30 ml of deionized water, 0.4 g of myristic acid and 0.6 g of gum arabic were added to prepare myristic acid microemulsion, and then the microemulsion was emulsified in a water bath at 1000 r / min and 65° C. for 2 h.

[0052] (2) Ammonium persulfate aqueous solution

[0053] 2.94 g of ammonium persulfate was dissolved in 30 ml of water to prepare an aqueous solution of ammonium persulfate.

[0054] (3) Preparation of polyaniline hollow spheres

[0055] In the myristic acid microemulsion obtained in (1), 1.2 g of aniline was added at 90° C. with a stirring speed of 600 r / min, and after stirring for 30 min, ammonium persulfate aqueous solution was added dropwise, followed by reaction for 3 h. The obtained reactants were washed three times with deionized water and absolute ethanol respectively, and dried in an oven to obtain polyaniline hollow spheres.

[0056] Scanning electron micrograph of the polyaniline hollow sphere ob...

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Abstract

The invention discloses a preparation method of polyaniline hollow spheres, which belongs to the field of preparation of polymer materials with special shapes, and solves the problems that the current preparation method has long reaction time and requires a low temperature environment, which limits its industrialization. The method comprises the steps of preparing myristic acid microemulsion, preparing ammonium persulfate aqueous solution and preparing polyaniline hollow spheres. In the present invention, on the basis of preparing polyaniline hollow spheres by the traditional soft template method, the template is replaced by myristic acid microemulsion, and ammonium persulfate is used as an oxidant to prepare micron-sized polyaniline with a hollow structure; During the preparation experiment, there is no need for an experimental environment below room temperature. The reactants are reacted, washed, and dried at 65°C-90°C. The experimental equipment used is simple, the process is easy to control, and it is easy to industrialize; the preparation time is longer than traditional methods. Greatly reduced, high preparation efficiency.

Description

technical field [0001] The invention belongs to the field of preparation of polymer materials with special shapes, and in particular relates to a preparation method of polyaniline hollow spheres. Background technique [0002] Polyaniline is a polymer material with low price, stable performance and good electrical conductivity. It can be widely used in military, anti-corrosion, catalysis and supercapacitors and other fields, and has high application value. Polyaniline with a hollow structure has attracted extensive attention in the fields of electrochemistry, drug delivery, artificial cells, and protection of bioactive components due to its high specific surface area and its ability to serve as micro-nano reactors. [0003] At present, the methods for preparing polyaniline hollow spheres mainly include hard template method and soft template method. Among them, the soft template method has been favored by researchers for many years due to its relatively simple operation becau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08J9/00C08L79/02
CPCC08G73/0266C08J9/00C08J2379/02
Inventor 王花枝端小亚马文礼周博甄立平付怡琳杨永杰张默
Owner LANZHOU UNIVERSITY