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Polyether block amide/polyion liquid semi-interpenetrating polymer network film and thermosetting preparation method thereof

A technology of polyether block amide and polyionic liquid, which is applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of poor film formation and achieve good compatibility, high degree of polymerization, and resistance strong pressure effect

Active Publication Date: 2014-03-26
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong rigidity of the chain segments, ionic liquids have poor film-forming properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Preparation of film-making feed solution:

[0027] 10 parts of polyether block amide (PEBA2533), 88.8 parts of n-butanol, and 1.2 parts of 1-octyl-3-vinylimidazole hexafluorophosphate were uniformly mixed at 65°C to form a membrane-forming feed solution.

[0028] 2) Cross-linking to form an interpenetrating network polymer film:

[0029] Add 0.6 parts of cross-linking agent and 0.2 parts of thermal initiator to the film-forming feed solution, and conduct a cross-linking reaction at 65° C. for 10-14 hours to obtain a film-forming solution.

[0030] 3) Post-processing:

[0031] Ultrasonically treat the cross-linked casting solution for 10 minutes for defoaming, then pour the casting solution on the polytetrafluoroethylene film tool; dry in the air for 48 hours, and then transfer to a vacuum drying oven to dry at room temperature After 12 hours, a polyether block amide / polyionic liquid semi-interpenetrating polymer network membrane with a thickness of about 130 micron...

Embodiment 2

[0034] 1) Preparation of film-making feed solution:

[0035] After uniformly mixing 10 parts of polyether block amide (PEBA2533), 88.8 parts of isopropanol, and 1.2 parts of 1-octyl-3-vinylimidazole tetrafluoroborate at 65° C., a membrane-forming feed solution was formed.

[0036] 2) Cross-linking to form an interpenetrating network polymer film:

[0037] Add 1 part of cross-linking agent and 0.25 parts of thermal initiator to the film-forming feed solution, and conduct a cross-linking reaction at 65° C. for 16-20 hours to obtain a film-casting solution.

[0038] 3) Post-processing:

[0039] Ultrasonically treat the cross-linked casting solution for 10 minutes for defoaming, then pour the casting solution on the polytetrafluoroethylene film tool; dry in the air for 48 hours, and then transfer to a vacuum drying oven to dry at room temperature After 12 hours, a polyether block amide / polyionic liquid semi-interpenetrating polymer network membrane with a thickness of about 130 ...

Embodiment 3

[0042] 1) Preparation of film-making feed solution:

[0043] After uniformly mixing 8.8 parts of polyether block amide (PEBA2533), 87.4 parts of n-butanol, and 3.8 parts of 1-octyl-3-vinylimidazole hexafluorophosphate at 65° C., a membrane-forming feed solution was formed.

[0044] 2) Cross-linking to form an interpenetrating network polymer film:

[0045]Add 1.2 parts of cross-linking agent and 0.4 parts of thermal initiator to the film-forming feed solution, and conduct a cross-linking reaction at 65° C. for 18-21 hours to obtain a film-casting solution.

[0046] 3) Post-processing:

[0047] Ultrasonically treat the cross-linked casting solution for 10 minutes for defoaming, then pour the casting solution on the polytetrafluoroethylene film tool; dry in the air for 48 hours, and then transfer to a vacuum drying oven to dry at room temperature After 12 hours, a polyether block amide / polyionic liquid semi-interpenetrating polymer network membrane with a thickness of about 13...

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Abstract

The invention belongs to the field of preparation of gas separation films, and particularly relates to a polyether block amide / polyion liquid semi-interpenetrating polymer network film and a thermosetting preparation method thereof. The preparation method comprises the following steps: 1) preparing a film preparation solution, namely uniformly mixing polyether block amide, a solvent and an ionic liquid monomer at 65 DEG C to form the film preparation solution; 2) crosslinking to form an interpenetrating network polymer film: adding a crosslinking agent and a thermal initiator into the film preparation solution to perform crosslinking reaction at 65 DEG C for 10-26 hours, thereby obtaining a film casting solution; and 3) after-treatment: carrying out ultrasonic treatment on the film casting solution subjected to crosslinking reaction, drying in air for 48 hours, transferring into a vacuum drying oven, and drying at room temperature for 12 hours. The polymerizable ionic liquid monomer used as one component in the semi-interpenetrating polymer network film has the advantages of favorable compatibility with other components, high stability and low tendency to loss, and can ensure the physical structure and enduring and stable properties of the film.

Description

technical field [0001] The invention belongs to the field of gas separation membrane preparation, in particular to a polyether block amide / polyionic liquid semi-interpenetrating polymer network membrane and a thermal curing preparation method thereof. Background technique [0002] Over the past few decades, with the extensive use of fossil fuels, CO in the air 2 The sharp increase in the content of the compound has exacerbated the global greenhouse effect. Currently, it is used to separate CO from combustion exhaust 2 The methods and technologies are adsorption, absorption, cryogenic condensation and membrane separation. Membrane separation technology has become one of the most important technologies for researching CO due to its advantages of low energy consumption, small equipment scale, and easy combination with other technologies. 2 Separated hotspots. [0003] Polyether block amide (polyether block amide, PEBA) is a rubbery polymer copolymer film material, which is ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L77/00C08L39/04C08F226/06B01D71/80B01D71/44B01D67/00
CPCY02P20/54
Inventor 张春芳高慧白云翔
Owner JIANGNAN UNIV
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