Device and method for continuously preparing polyaniline nanofiber through mobile interface polymerization

A nanofiber, mobile interface technology, applied in chemical instruments and methods, fiber chemical characteristics, single-component synthetic polymer rayon, etc., can solve the problem of difficult to achieve large-scale continuous production, limited synthesis efficiency, and limited yield problems such as interface area, to achieve the effect of improving synthesis efficiency, improving monomer utilization, and avoiding post-processing steps

Inactive Publication Date: 2019-09-10
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 through mobile interface polymerization
  • Device and method for continuously preparing polyaniline nanofiber through mobile interface polymerization
  • Device and method for continuously preparing polyaniline nanofiber through mobile interface polymerization

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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 t...

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 length of the tube is 5.0m, and the inner diameter is 8.0mm; 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 372.5g aniline monomer and 650.0g ferric trichloride, join the aniline monomer into the first container containing xylene, join ferric chloride into the container containing 0.5mol / 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 speed of the organic phase stirring device to...

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 pipe is 10.0m, and the inner diameter is 15.0mm; 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 46.6g of aniline monomer and 1210.0g of benzoyl peroxide, add the aniline monomer into the first container filled with chloroform, and add benzoyl peroxide into the container filled with 1mol / L sulfuric acid solution in the second container of

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

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Abstract

The invention provides a device and method for continuously preparing a polyaniline nanofiber through mobile interface polymerization. The method mainly comprises the following steps: continuously putting a phenylamine monomer and an organic solvent into a first container, carrying out stirring and mixing so as to obtain an organic phase solution, continuously putting an acid solution of an initiator and a dopant into a second container, and carrying out stirring and mixing so as to obtain a water phase solution; respectively mixing the two solutions uniformly, opening valves, enabling the twosolutions to flow through two reaction tubes continuously and stably at a certain speed under the action of centrifugal force provided by stirring devices, forming mobile interfaces inside the reaction tubes, polymerizing the phenylamine monomer in a mobile interface area, and finally gathering the phenylamine monomer into two collection containers after flowing polymerization is completed; and carrying out washing, suction filtration and drying on products in the collection containers, so as to obtain the polyaniline nanofiber. The method is simple and convenient in operation, low in cost, controllable in reaction and high in repeatability, and is an effective way for achieving on-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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