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Preparation method and application of hypercrosslinked porous polyionic liquid material

A technology of polyionic liquid and ionic liquid, which is applied in the field of preparation of super-crosslinked porous polyionic liquid materials, can solve the problems of reducing surface energy, etc., and achieve the effect of easy reuse, high content and wide application

Inactive Publication Date: 2021-06-04
SHAOXING UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The hypercrosslinked polymer network needs to be formed under strong solvation to ensure that the polymer chains are fully swollen. After the solvent volatilizes, the polymer chains tend to shrink and pack tightly, reducing the surface energy, but the rigid hypercrosslinked structure restricts conformational conversion and prevents shrinkage. Pore ​​structure

Method used

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  • Preparation method and application of hypercrosslinked porous polyionic liquid material
  • Preparation method and application of hypercrosslinked porous polyionic liquid material
  • Preparation method and application of hypercrosslinked porous polyionic liquid material

Examples

Experimental program
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Effect test

Embodiment 1

[0018] A kind of preparation method of hypercrosslinked porous polyionic liquid material, it comprises following specific steps:

[0019] Step 1, the preparation of rigid diene ionic liquid monomer;

[0020] Weigh 2-vinylimidazole and 4-chloromethylstyrene, mix them according to the ratio of the amount of substances as 1:1, add a polymerization inhibitor, the amount of polymerization inhibitor is 1% of the total mass, add tetrahydrofuran, and make 40% After solution, the corresponding ionic liquid was obtained after stirring at 60°C for 48 hours, washed with ethyl acetate, diethyl ether, and petroleum ether three times in sequence, and then vacuum-dried at 60°C to obtain a rigid diene ionic liquid monomer;

[0021] After dissolving the rigid diene ionic liquid monomer in acetone, add it to potassium hexafluorophosphate for exchange. The molar amount of the salt is 1.5 times that of the monomer. Heat and stir at 60°C, and add 1% of a polymerization inhibitor to exchange After ...

Embodiment 2-4

[0025] Except for the following differences, all the other are the same as in Example 1, using the tertiary amine compounds shown in Table 1 respectively.

[0026] Table 1

[0027]

Embodiment 5-7

[0029] Except for the following differences, the rest are the same as in Example 1, using allyl halides or styrene benzyl halides shown in Table 2, respectively.

[0030] Table 2

[0031]

[0032]

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Abstract

The invention provides a method for preparing hypercrosslinked porous polyionic liquid material by ion thermal crosslinking and its application. In the method, alkenyl tertiary amine is quaternized with allyl halide or styrene benzyl halide to form Rigid diene ionic liquid monomer, and introduce suitable matching anion by ion exchange, then, carry out ionic thermal polymerization in zinc chloride / sodium chloride composite molten salt system, obtain hypercrosslinked porous polyionic liquid material, the obtained material has Wide application prospects. The advantages of this method: (1) high yield, 94% to 99%; (2) large specific surface area of ​​the prepared material, within 200m 2 / g or more; (3) The material has an all-ionic liquid skeleton with a high content of active components; (4) The preparation process is simple and the raw materials are easy to obtain; (5) The material has a wide range of applications, and can be effectively Adjusting the material structure can be used in catalysis, gas adsorption, wastewater treatment, separation and other fields; (6) The material is easy to recycle and reuse.

Description

technical field [0001] The invention relates to a preparation method and application of a hypercrosslinked porous polyionic liquid material, belonging to the technical field of polymer chemical synthesis. Background technique [0002] Ionic liquids have excellent performance and are widely used, but they have disadvantages such as difficult recycling, high price, high viscosity, poor degradation, and inability to form. Immobilization can better solve the above problems, but the traditional loading method grafts a large volume of ionic liquid on the carrier, which is easy to cause pore blockage and low loading capacity. Porous polyionic liquids combine the specific properties of ionic liquids with the advantages of processable polymers, stable and durable, and adjustable structures, and are widely used in catalysis, adsorption separation, and electrochemistry. [0003] Porous polyionic liquids, especially pure polyionic liquid skeleton porous materials, are rarely studied, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/42C08F226/06C08F212/14C08F226/02B01D53/02C02F1/28
CPCB01D53/02C02F1/285C08F8/42C08F212/14C08F226/02C08F226/06Y02P20/54
Inventor 梁学正施映霞程欲晓顾中怡欧阳超张杰
Owner SHAOXING UNIVERSITY
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