Device and method for continuously preparing polyaniline nanofiber by moving interface polymerization

A technology of nanofibers and moving interfaces, applied in chemical instruments and methods, fiber chemical characteristics, single-component synthetic polymer rayon, etc., can solve the problem of limited synthesis efficiency, difficulty in realizing large-scale continuous production, and limited yield The interface area and other issues can be improved to improve the synthesis efficiency, avoid the post-treatment process, and improve the utilization rate of the monomer

Active Publication Date: 2019-10-22
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the yield of the traditional interfacial polymerization method is limited by the interface area, and it is difficult to achieve large-scale continuous production, so its synthesis efficiency is very limited

Method used

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  • Device and method for continuously preparing polyaniline nanofiber by moving interface polymerization
  • Device and method for continuously preparing polyaniline nanofiber by moving interface polymerization
  • Device and method for continuously preparing polyaniline nanofiber by moving interface polymerization

Examples

Experimental program
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Embodiment 1

[0040] Such as figure 1 with 2 As shown, the device for continuously preparing polyaniline nanofibers by moving interfacial polymerization in this embodiment includes a first container 11 and a second container 12, the first container 11 is provided with a first stirring device 21, and the second container 12 is provided with The second stirring device 22 uses the stirring device to mix the solution in the container uniformly and provide it with flow driving force. The bottom of the first container 11 is communicated with the feed end of the reaction tube through the first connection pipe 31, the bottom of the second container 12 is communicated with the feed end of the reaction tube through the second connection pipe 32, and the discharge end of the reaction tube is communicated with the collection container , the first connecting pipe 31 and the second connecting pipe 32 are provided with a valve 4 .

[0041] Preferably, in this embodiment, the number of first connecting p...

Embodiment 2

[0048] The internal diameter of the first container 11 and the second container 12 in the device for continuously preparing polyaniline nanofibers by moving interface polymerization of the present embodiment is 50.2 mm, and the diameter of the first stirring device and the second stirring device is 50.0 mm; the reaction The length of the tube is 5.0 m, and the inner diameter is 8.0 mm; other implementations are the same as in Example 1.

[0049] The preparation method of the polyaniline nanofiber of the present embodiment is as follows:

[0050] (1) Accurately weigh 372.5 g of aniline monomer and 650.0 g of ferric trichloride, add the aniline monomer into the first container containing xylene, add ferric chloride into the container containing 0.5 mol / L doped In the second container of acid solution, wherein mixed dopant is made up of phosphoric acid and perchloric acid, the molar ratio of phosphoric acid and perchloric acid is 1:2;

[0051] (2) Set the rotation speed of the o...

Embodiment 3

[0054] The internal diameter of the first container 11 and the second container 12 in the device for continuously preparing polyaniline nanofibers by moving interface polymerization of the present embodiment is 100.0 mm, and the diameter of the first stirring device and the second stirring device is 95.0 mm; the reaction The length of the tube is 10.0 m, and the inner diameter is 15.0 mm; other implementations are the same as in Example 1.

[0055] The preparation method of the polyaniline nanofiber of the present embodiment is as follows:

[0056] (1) Accurately weigh 46.6 g of aniline monomer and 1210.0 g of benzoyl peroxide, add the aniline monomer into the first container containing chloroform, add benzoyl peroxide into the container containing 1 mol / L sulfuric acid in the second container of the solution;

[0057] (2) Set the rotation speed of the organic phase stirring device to 1000 r / min (the rotation speed ratio of the organic phase and the water phase is 1:2), and a...

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Abstract

The invention provides a device and a method for continuously preparing polyaniline nanofibers by moving interface polymerization, and the method mainly comprises the following steps: continuously injecting aniline monomers and an organic solvent into a first container, stirring and mixing to form an organic phase solution, continuously injecting an acidic aqueous solution of an initiator and a dopant into a second container, and stirring and mixing to form an aqueous phase solution; after the two solutions are uniformly mixed respectively, opening a valve, allowing the two solutions to continuously and stably flow through two reaction tubes at a certain speed through the centrifugal force provided by a stirring device and form a moving interface in the reaction tubes, polymerizing the aniline monomers in the moving interface area, and after the flowing polymerization is finished, finally collecting the aniline monomers into the two collection containers; and washing, suction filteringand drying the products in the collection containers to obtain the polyaniline nanofibers. The method has the advantages of simple and convenient operation, low cost, controllable reaction and high repeatability, and is an effective way for realizing large-scale continuous production of high-quality polyaniline nanofibers.

Description

technical field [0001] The invention belongs to the field of preparation of nanofiber materials, in particular to a preparation method of polyaniline nanofibers. Background technique [0002] Polyaniline has always been a research hotspot of conductive polymer materials. It not only has the advantages of cheap and easy to obtain raw materials, simple synthesis, high electrical conductivity, and good environmental stability, but also has a unique doping mechanism, which can be combined with other materials. Composite materials with unique properties are formed. Among many polyaniline micro-nanostructures, polyaniline nanofibers have high specific surface area, high porosity and unique conductive channels, and have shown great potential in the fields of supercapacitors, stealth materials, nano-optoelectronic devices, chemical and biological sensors, etc. application potential. In addition to physical methods such as electrospinning [CN101973713A, CN101967279A, CN100360725C] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/24B01F13/10B01F7/18C08G73/02D01F6/76
CPCB01J19/2425C08G73/0266D01F6/76B01F27/90B01F33/813
Inventor 梁浜雷司建鑫赵海鹏郭心欣张艳花赵亚奇冯巧李翔史向阳
Owner HENAN UNIV OF URBAN CONSTR
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