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Preparation of high strength ionic liquid gel

An ionic liquid and high-strength technology, which is applied in the field of polymer compound preparation, can solve problems such as limited applications, and achieve the effects of good chemical stability, good solubility, and wide electrochemical stable potential window

Inactive Publication Date: 2009-04-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the boiling range of solvent water from 0 to 100 °C and the necessary conditions of the water environment limit the application of gel as a new functional material outside of biological materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Prepare 5 mL of [BMIm]BF4 solution containing 5.355 g of 2-hydroxyethyl methacrylate and 0.0164 g of azobisisobutyronitrile. After bubbling high-purity nitrogen gas for 30 min, inject it with a syringe consisting of two glass slides and a 2 mm thick silicone rubber plate. In the prepared container, react at 50° C. for 12 hours to obtain a high-strength ionic liquid gel. The synthesized gel was cut into cylindrical samples with a diameter of 10 mm and a thickness of 4-7 mm for compression testing on a universal testing machine. The compression speed is 10% thickness / min, and the compression will stop automatically when the compression ratio is greater than 90%. Five parallel experiments were carried out for each sample, and the results were averaged.

Embodiment 2

[0013] Prepare 5 mL of [BMIm]PF6 solution containing 4.71 g of methyl methacrylate and 0.0164 g of azobisisoheptanonitrile. After bubbling high-purity nitrogen gas for 30 min, add a glass made of two glass sheets and a 2 mm thick silicone rubber plate with a syringe. In the container, react at 80° C. for 6 hours to obtain a high-strength ionic liquid gel. The synthesized gel was cut into cylindrical samples with a diameter of 10 mm and a thickness of 4-7 mm for compression testing on a universal testing machine. The compression speed is 10% thickness / min, and the compression will stop automatically when the compression ratio is greater than 90%. Five parallel experiments were carried out for each sample, and the results were averaged.

Embodiment 3

[0015] Prepare 25mL of [BMIm]Cl solution containing 0.0385g N, N-methylene acrylamide, 0.0041g dibenzoyl peroxide and 1.777g acrylamide, and inject it with a syringe after bubbling high-purity nitrogen gas for 30min. and a container made of a 2mm thick silicon rubber plate, and reacted at 70° C. under nitrogen protection for 8 hours to obtain an ionic liquid gel product. Cut it into cylindrical samples with a diameter of 10 mm and a thickness of 4 to 7 mm for compression testing on a universal testing machine. The compression speed is 10% thickness / min, and the compression will stop automatically when the compression ratio is greater than 90%. Five parallel experiments were carried out for each sample, and the results were averaged.

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Abstract

The invention discloses a method for preparing high-strength ionic lyogel. The method is as follows: a monomer, an initiator and a crosslinking agent are added into an ionic liquid for polymerization, and the high-strength ionic lyogel is obtained under the condition that the polymerization temperature is between 50 and 80 DEG C, the polymerization time is between 6 and 12 hours, the mass percent concentration of the monomer in the ionic liquid is between 5 and 30 percent, the amount of the initiator is 0.01 to 0.5 percent of the mass of the monomer, and the amount of the crosslinking agent is 0.1 to 1 percent of the mass of the monomer. The high-strength ionic lyogel prepared by the method can overcome the defects in the prior ionic liquid of low strength, frangibility, poor processability and deforming property and so on because the maximum compression stress of the high-strength ionic lyogel can reach 30 MPa, and becomes a nonaqueous medium material with high mechanical strength, good elasticity and no environmental condition limitation, so that performance guarantee is provided for actual large-scale application of the ionic lyogel in the fields of novel solar cells, lithium cells, super capacitors, artificial muscle, electrochromic devices and so on.

Description

technical field [0001] The invention relates to a preparation method of a polymer compound, in particular to a preparation method of a high-strength gel in a non-aqueous medium. Background technique [0002] As a cross-linked polymer that can swell in water, hydrogel provides the possibility for cell growth and reproduction in its unique water environment, so it is widely used in the research and development of new biomaterials, such as drug controlled release, Protein adsorption, enzyme immobilization, cyclic adsorption, biological separation, artificial muscle, etc. However, the boiling range of solvent water from 0 to 100 °C and the necessary conditions of the water environment limit the application of gel as a new functional material outside of biological materials. Compared with general solvents, ionic liquids have many unique properties, such as completely composed of anions and cations, good thermal stability, almost no vapor pressure, high conductivity, and wide ele...

Claims

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Application Information

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IPC IPC(8): C08F20/14C08F20/28C08F20/56C08F2/14
Inventor 黄梅金高军
Owner ZHEJIANG UNIV
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