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Novel flexible organic porous polymer hollow fiber membrane containing carbazole active groups, and preparation method and application of hollow fiber membrane

A porous polymer, fiber membrane technology, applied in chemical instruments and methods, membrane, membrane technology, etc., can solve the problem of less research

Active Publication Date: 2019-10-15
YUNNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

POFs materials have developed rapidly in the past few decades. In the process of early design and subsequent modification, researchers have obtained more and more organic porous materials, and at the same time expanded the application fields of materials. There is still relatively little research on the synthesis of polymers, and it is urgent to develop an organic porous material with a wide range of applications.

Method used

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  • Novel flexible organic porous polymer hollow fiber membrane containing carbazole active groups, and preparation method and application of hollow fiber membrane
  • Novel flexible organic porous polymer hollow fiber membrane containing carbazole active groups, and preparation method and application of hollow fiber membrane
  • Novel flexible organic porous polymer hollow fiber membrane containing carbazole active groups, and preparation method and application of hollow fiber membrane

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Experimental program
Comparison scheme
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Embodiment 1

[0023] Embodiment 1 proposes a novel flexible organic porous polymer hollow fiber membrane containing carbazole active groups, and its preparation method comprises the following steps:

[0024] (1) Mix the aromatic organic porous framework material monomer with dimethoxymethane, then degas with argon, then take an ice-water bath and add trifluoroacetic acid, let it stand at room temperature, and keep it warm for 68 hours under the protection of argon, and then put Pour it into ammonia water, filter it with a membrane filter and collect the obtained product, and then wash it three times with acetone and ethanol respectively; The ratio is 1:12.5, and the volume ratio of the trifluoroacetic acid to the dimethoxymethane is 1:2.2. The aromatic organic porous framework material monomer at least includes 3,6-diamino-9-ethylcarbazole, 3,6-diamino-9-propylcarbazole, 3,6-diamino-9-butyl One of carbazole or 3,6-diamino-9-isoylcarbazole.

[0025] (2) The product obtained in the step (1)...

Embodiment 2

[0029] Embodiment 2 proposes a novel flexible organic porous polymer hollow fiber membrane containing carbazole active groups, and its preparation method comprises the following steps:

[0030] (1) Mix the aromatic organic porous framework material monomer with dimethoxymethane, then degas with argon, then take an ice-water bath and add trifluoroacetic acid, keep it at room temperature for 78 hours under the protection of argon, and then put Pour it into ammonia water, filter it with a membrane filter and collect the obtained product, and then wash it three times with acetone and ethanol respectively; The ratio is 1:2, and the volume ratio of the trifluoroacetic acid to the dimethoxymethane is 1:7.5. The aromatic organic porous framework material monomer at least includes 3,6-diamino-9-ethylcarbazole, 3,6-diamino-9-propylcarbazole, 3,6-diamino-9-butyl One of carbazole or 3,6-diamino-9-isoylcarbazole.

[0031] (2) The product obtained in the step (1) was sequentially subjecte...

Embodiment 3

[0035] Embodiment 3 proposes a novel flexible organic porous polymer hollow fiber membrane containing carbazole active groups, and its preparation method comprises the following steps:

[0036] (1) Mix the aromatic organic porous framework material monomer with dimethoxymethane, then degas with argon, then take an ice-water bath and add trifluoroacetic acid, keep it at room temperature for 73 hours under the protection of argon, and then put Pour it into ammonia water, filter it with a membrane filter and collect the obtained product, and then wash it three times with acetone and ethanol respectively; The ratio is 1:7, and the volume ratio of the trifluoroacetic acid to the dimethoxymethane is 1:5. The aromatic organic porous framework material monomer at least includes 3,6-diamino-9-ethylcarbazole, 3,6-diamino-9-propylcarbazole, 3,6-diamino-9-butyl One of carbazole or 3,6-diamino-9-isoylcarbazole.

[0037] (2) The product obtained in the step (1) was sequentially subjected ...

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Abstract

The invention relates to a novel flexible organic porous polymer hollow fiber membrane containing carbazole active groups, and a preparation method and an application of the hollow fiber membrane. Themethod comprises the following steps of: mixing an aromatic organic porous framework material monomer and dimethoxymethane, performing ice water bath, adding trifluoroacetic acid, pouring into ammonia water, performing filtration, collecting a product, performing Soxhlet extraction on the product, performing drying to form powder, grinding and dispersing the powder in N-methyl-2-pyrrolidone for stirring, adding polysulfone to form a suspension during stirring, adding ethanol for stirring, spinning a PAF / PSF solution to form a symmetrical hollow fiber membrane, and performing drying to form the novel flexible organic porous polymer hollow fiber membrane containing the carbazole active groups. According to the preparation method, the hollow fiber membrane is processed by adding the flexiblegroups into a framework, so that the solubility of a polymer can be improved; and the more uniform and denser hollow fiber membrane is generated.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, and in particular relates to a novel flexible organic porous polymer hollow fiber membrane containing carbazole active groups and its preparation method and application. Background technique [0002] Organic porous materials can connect and couple these organic small molecules to each other through specific polymerization reactions between different functional groups to form infinitely connected polymer materials with stable pore structures. From the existing POFs, we can find that its structure can be crystalline or long-range disordered, which has a great relationship with the selection of monomers and polymerization reactions for their synthesis. If the organic base blocks of the synthesized POFs structure have high symmetry and rigid molecules, even if the polymer is disordered in the long range, the organic base blocks will still polymerize according to a certain connection method...

Claims

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Application Information

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IPC IPC(8): B01D71/82B01D67/00B01D69/02B01D69/08B01D71/06
CPCB01D71/82B01D71/06B01D69/08B01D67/0006B01D67/0002B01D69/02B01D2325/24
Inventor 孟爽马和平国术坤
Owner YUNNAN NORMAL UNIV