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Polycyclic aromatic skeleton polymer, and preparation method and application thereof

A polycyclic aromatic and polymer technology, applied in the field of polymer materials, can solve the problems of easy swelling and penetration, retention rate, and easy corrosion, and achieve the effect of low price, good nanofiltration performance, and simple operation

Active Publication Date: 2021-10-01
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still some problems in the current polymer separation membranes, such as easy corrosion, swelling and trade-off effect between permeation and rejection, which limit the application of this material in industrial production.

Method used

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  • Polycyclic aromatic skeleton polymer, and preparation method and application thereof
  • Polycyclic aromatic skeleton polymer, and preparation method and application thereof
  • Polycyclic aromatic skeleton polymer, and preparation method and application thereof

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preparation example Construction

[0041] Based on the same inventive concept, the embodiment of the present application also provides a method for preparing the above-mentioned polycyclic aromatic skeleton polymer, including the following steps:

[0042] S1, dissolving the monomer in an organic solvent, and then adding an acid to obtain a monomer solution;

[0043] S2, heating the monomer solution to cause a polymerization reaction;

[0044] S3, coating the solution after the polymerization reaction on the substrate, and drying to obtain a polycyclic aromatic skeleton polymer;

[0045] Wherein, the monomer includes one of 1,4-diacetophenone, 1,3-diacetophenone and 1,3,5-triacetophenone.

[0046] It should be noted that, in the preparation method of the polycyclic aromatic skeleton polymer in the embodiment of the present application, the reaction monomer is dissolved in an organic solvent, and is obtained by polymerization reaction under the catalysis of an acid. Specifically, the monomer is 1, One of 4-diac...

Embodiment 1

[0062] The embodiment of the present application provides a preparation method of a polycyclic aromatic skeleton polymer, comprising the following steps:

[0063] S1. Dissolve 162 mg of 1,4-diacetophenone (CAS No.: 1009-61-6, FW: 162.19) monomer in 2 mL of toluene solution. After the monomer is completely dissolved, add 0.5 mL of trifluoro Methanesulfonic acid obtains monomer solution;

[0064] S2. Put the monomer solution in a muffle furnace and polymerize at 100°C for 20 hours;

[0065] S3. Spin-coat the solution after the polymerization reaction in S2 on a glass sheet, then dry it in an oven at 100°C for 24 hours, then soak it in deionized water for 3 minutes to remove the film, and wash the obtained film with water and ethanol in sequence to obtain Polycyclic aromatic backbone polymers. Specifically, 162 mg of 1,4-diacetophenone monomer was reacted to obtain 129.6 mg of polycyclic aromatic skeleton polymer, and the yield of the reaction was as high as 80%.

Embodiment 2

[0067] The embodiment of the present application provides a preparation method of a polycyclic aromatic skeleton polymer, comprising the following steps:

[0068] S1. Dissolve 324mg of 1,3-diacetophenone reactive monomer (CAS No.: 6781-42-6FW: 162.19) in 4mL of xylene solution. After the monomer is completely dissolved, add 0.5mL of Hydrofluoric acid obtains monomer solution;

[0069] S2. Put the monomer solution in an oven and polymerize at 150°C for 24 hours;

[0070] S3. Spin-coat the solution after the polymerization reaction in S2 on a glass sheet, then dry it in an oven at 120°C for 24 hours, then soak it in deionized water for 5 minutes to remove the film, and wash the obtained film with water and ethanol in sequence to obtain Polycyclic aromatic backbone polymers.

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Abstract

The invention provides a polycyclic aromatic skeleton polymer, and a preparation method and application thereof. The preparation method of the polycyclic aromatic skeleton polymer comprises the following steps: dissolving a monomer in an organic solvent, and then adding acid to obtain a monomer solution; heating the monomer solution to carry out polymerization reaction; and coating a substrate with the solution after the polymerization reaction, and drying to obtain the polycyclic aromatic skeleton polymer. The monomer comprises one of 1, 4-diacetyl benzene, 1, 3-diacetyl benzene and 1, 3, 5-triacetyl benzene, and the monomer comprises one of 1, 4-diacetyl benzene, 1, 3-diacetyl benzene and 1, 3, 5-triacetyl benzene. The polycyclic aromatic skeleton polymer is of an amorphous rigid skeleton structure, can be formed by polymerizing carbonyl-containing aromatic monomer molecules through an in-situ aldol condensation reaction, and has good organic solvent nanofiltration performance, chemical stability, structural stability and rejection rate due to relatively narrow pore size distribution.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polycyclic aromatic skeleton polymer and its preparation method and application. Background technique [0002] Organic microporous membranes are composed of pure organic molecules connected by covalent bonds. They have the advantages of good chemical stability, high porosity and easy processing and molding. They show good application prospects in the field of organic solvent nanofiltration. However, there are still some problems in the current polymer separation membrane, such as easy corrosion, swelling and trade-off effect between permeation and rejection, which limit the application of this material in industrial production. These problems originate from unstable chemical bonds, high pore rigidity, nanometer-scale film thickness, and uneven pore distribution. [0003] Therefore, how to improve the manufacturing process to synthesize new polymer membranes with high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/10B01D71/44B01D67/00B01D61/02
CPCC08G61/10B01D61/027B01D71/44B01D67/0002C08G2261/18C08G2261/312C08G2261/11Y02A20/131
Inventor 黎明苏倩文文菊
Owner HUBEI UNIV
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