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Preparation method and application of super-crosslinked porous polyion liquid material

A technology of polyionic liquid and ionic liquid, which is applied in the field of preparation of hypercrosslinked porous polyionic liquid materials, can solve problems such as reducing surface energy, and achieve the effects of simple reuse, high content and wide application.

Inactive Publication Date: 2019-03-01
SHAOXING UNIVERSITY +1
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  • 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 super-crosslinked porous polyion liquid material
  • Preparation method and application of super-crosslinked porous polyion liquid material
  • Preparation method and application of super-crosslinked porous polyion liquid material

Examples

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Effect test

Embodiment 1

[0019] A kind of preparation method of hypercrosslinked porous polyionic liquid material, it comprises following specific steps:

[0020] Step 1, the preparation of rigid diene ionic liquid monomer;

[0021] 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, stir at 60°C for 48 hours to obtain the corresponding ionic liquid, wash with ethyl acetate, diethyl ether, and petroleum ether three times in sequence, and then vacuum-dry at 60°C to obtain the rigid diene ionic liquid monomer;

[0022] After dissolving the rigid diene ionic liquid monomer in acetone, add it to potassium hexafluorophosphate for exchange, the molar amount of salt is 1.5 times that of the monomer, heat and stir at 60°C, and add 1% polymerization inhibitor, exchange After filtering to remove the co...

Embodiment 2-4

[0026] 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.

[0027] Table 1

[0028]

Embodiment 5-7

[0030] 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.

[0031] Table 2

[0032]

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Abstract

The invention discloses a method for preparing a super-crosslinked porous polyion liquid material by ion thermal crosslinking and application of the material. The method comprises the following steps:performing quaternization on alkenyl tertiary amine and allyl halide or styrene benzyl halide to form a rigid diene ion liquid monomer; introducing proper complex anions through ion exchange; then performing ionic thermal polymerization in a zinc chloride / sodium chloride composite molten salt system to obtain the super-crosslinked porous ion liquid material. The obtained material has a wide application prospect. The preparation method has the advantages of: (1) high yield, which is up to 94 to 99 percent; (2) large specific area,which is 200m<2> / g or more; (3) full ion liquid framework and high active component content; (4) simple and convenient preparation process, and ready availability of raw materials; (5) wide material application, capability of effectively adjusting the material structure by adjusting raw materials, complex anions and polymerization conditions, and applicability in the fields of catalysis, gas adsorption, wastewater treatment, separation and the like; (6) easiness and convenience in recycling the materials.

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 Applications(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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