Aqueous polyaniline hollow microballoon and preparation method thereof

A water-based polyaniline and microsphere technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve problems such as pollution of the environment, and achieve the effects of low cost, good water dispersibility, and excellent hydrophilicity

Active Publication Date: 2013-07-24
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problem that polyaniline hollow microspheres are insoluble in water and can only be dissolved in toxic and harmful volatile organic solvents to pollute the environment in the prior art, the present inve

Method used

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  • Aqueous polyaniline hollow microballoon and preparation method thereof
  • Aqueous polyaniline hollow microballoon and preparation method thereof
  • Aqueous polyaniline hollow microballoon and preparation method thereof

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preparation example Construction

[0028] The preparation method of water-based polyaniline hollow microspheres comprises the following steps:

[0029] Step a) dissolving aniline and sulfoaniline in water to obtain an aqueous dispersion;

[0030] Step b) dissolving potassium ferricyanide in water to obtain an aqueous solution of potassium ferricyanide;

[0031] Step c) mixing the aqueous dispersion with an aqueous solution of potassium ferricyanide, reacting, and filtering to obtain a reaction product;

[0032] Step d) drying the reaction product obtained in step c) to obtain water-based polyaniline hollow microspheres.

[0033] In the preparation method of the present invention, preferably, the amount of aniline used is 95 parts by weight, the amount of sulfoaniline used is 87-118 parts by weight, and the amount of potassium ferricyanide used is 481-3290 parts by weight.

[0034] In the preparation method of the present invention, preferably, the mass percent concentration of aniline in the aqueous dispersio...

Embodiment 1

[0056] to combine figure 2 and image 3 Illustrative Example 1

[0057] Preparation of water-based polyaniline hollow microspheres:

[0058] Step a) dissolving 95g of aniline and 87g of 2-aminobenzenesulfonic acid in 120ml of water to obtain an aqueous dispersion;

[0059] Step b) dissolving the potassium ferricyanide of 1481g in 680ml water to obtain an aqueous solution of potassium ferricyanide;

[0060] Step c) mixing the aqueous dispersion with the potassium ferricyanide aqueous solution, standing still at -20°C for 20 hours, then filtering, washing with methanol, water, and methanol in sequence until the filtrate is colorless, and the reaction product is obtained;

[0061] Step d) vacuum drying the reaction product for 24 hours to obtain water-based polyaniline hollow microspheres.

[0062] figure 2 The scanning electron microscope pictures of the water-based polyaniline hollow microspheres prepared in Example 1 of the present invention and the dispersion of the wa...

Embodiment 2

[0065] to combine Figure 4 and Figure 5 Illustrative Example 2

[0066] Preparation of water-based polyaniline hollow microspheres:

[0067] Step a) dissolving 95g of aniline and 118g of 4-acetamido-2-aminobenzenesulfonic acid in 235ml of water to obtain an aqueous dispersion;

[0068] Step b) dissolving 3290g of potassium ferricyanide in 1300ml water to obtain potassium ferricyanide aqueous solution;

[0069] Step c) mixing the aqueous dispersion with an aqueous solution of potassium ferricyanide, standing still at a temperature of 15°C for 48 hours, then filtering, washing with methanol, water, and methanol in sequence until the filtrate is colorless, and a reaction product is obtained;

[0070] Step d) vacuum drying the reaction product for 72 hours to obtain water-based polyaniline hollow microspheres.

[0071] Figure 4 The scanning electron microscope pictures of the water-based polyaniline hollow microspheres prepared in Example 2 of the present invention and the...

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Abstract

The invention relates to an aqueous polyaniline hollow microballoon and preparation method thereof, which belongs to the field of the polyaniline material technology, and solves the technical problem that the polyaniline hollow microballoon in prior art can not be dissolved in water, and only dissolves in a poisonous and harmful volatile organic solvent when used with environment pollution. The preparation method of the aqueous polyaniline hollow microballoon includes the following steps: a step a), dissolving aniline and sulfonic aniline in water and obtaining an aqueous dispersion liquid; a step b), dissolving potassium ferricyanide in water and obtaining a potassium ferricyanide aqueous solution; a step c) mixing the aqueous dispersion liquid and the potassium ferricyanide aqueous solution for reaction, and obtaining the reaction products by filtering; a step d), drying the obtained reaction products from the step c), and obtaining the aqueous polyaniline hollow microballoon. The preparation method of the present invention has the advantages of simple method and low cost, and the prepared aqueous polyaniline hollow microballoon has excellent water dispersability, and can be dissolved in water for obtaining an aqueous polyaniline solution.

Description

technical field [0001] The invention relates to the technical field of polyaniline materials, in particular to a water-based polyaniline hollow microsphere and a preparation method thereof. Background technique [0002] Due to its special hollow structure, polyaniline hollow microspheres have broad application prospects in the fields of energy-free transmission, controllable separation and release of biology and drugs, and protection of biologically active components of artificial nuclei. At the same time, the high specific surface area, low permeability and density of polyaniline hollow microspheres make it widely used in microreactors, biosensors, pigment synthesis, and energy storage. Several preparation methods of polyaniline hollow microspheres have been disclosed in the prior art, such as: Wan Meixiang et al. , ferric chloride was used as an oxidant to prepare hollow polyaniline microspheres with a diameter of 385 nm and a wall thickness of 35 nm imitating rambutan st...

Claims

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Application Information

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IPC IPC(8): C08G73/02B01J13/14
Inventor 张红明李季王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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