Preparation method for ionic liquid gel with high elongation rate and adjustable elastic modulus

A technology of ionic liquid and elastic modulus, which is applied in the field of preparation of ionic liquid gel with high elongation and adjustable elastic modulus, can solve the problems of small strain range and inability to meet the requirements of soft elastic materials, and the method is simple and reliable control effect

Inactive Publication Date: 2014-05-14
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the above three examples of ionic liquid gels can be classified as ionic liquid gels with stretchable and elastic modulus adjustable properties, their strain range is small, which is far from satisfying the requirements for high elongation and elastic modulus. Requirements for Soft Elastic Materials with Tunable Properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 4-15wt% of acrylic monomer-acrylic acid relative to the ionic liquid to the 1-ethyl-3-methylimidazolium ethyl sulfate ionic liquid, and then add 3-5wt% polyethylene glycol relative to the acrylic monomer Glycol dimethacrylate and 2-hydroxyl-2-methylpropiophenone relative to the acrylic monomer 1-2wt%, after being stirred and mixed thoroughly, poured into a glass plate mold with a silicone gasket, placed An ionic liquid gel with high elongation and adjustable elastic modulus can be obtained by ultraviolet radiation in the ultraviolet crosslinking apparatus for 1-10 hours.

[0019] The modulus of the ionic liquid gel prepared in this example is 2.0-8.0 kPa, the strain can reach 3-10 times, and the breaking stress is 5-15 kPa.

Embodiment 2

[0021] Add 15-20wt% of acrylic monomer-methacrylic acid relative to the ionic liquid to the 1-methyl-3-methylimidazolium ethyl sulfate ionic liquid, and then add 0.1-0.5wt% relative to the acrylic monomer The polyethylene glycol dimethacrylate and the 1-hydroxycyclohexyl phenyl ketone of 0.1-1wt% relative to the acrylic monomer are stirred and mixed thoroughly, and then poured into a glass plate mold with a silicone gasket, Putting it in an ultraviolet cross-linking apparatus for ultraviolet radiation for 1-10 hours, an ionic liquid gel with high elongation and adjustable elastic modulus can be obtained.

[0022] The modulus of the ionic liquid gel prepared in this example is 5-14kPa, the strain can reach 8-15 times, and the breaking stress is 30-50kPa.

Embodiment 3

[0024] Add 20-35wt% of acrylic acid monomer-acrylic acid relative to the ionic liquid to the 1-butyl-3-methylimidazolium ethyl sulfate ionic liquid, and then add 0.05-0.2wt% of the four-acrylic acid relative to the acrylic monomer Arm polyethylene glycol acrylate and 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1- Acetone, stir and mix well, pour it into a glass plate mold with a silica gel gasket, put it in an ultraviolet crosslinker for 1-10 hours of ultraviolet radiation, and you can get a high elongation and elastic modulus adjustable Ionic liquid gel.

[0025] The modulus of the ionic liquid gel prepared in this example is 12-20kPa, the strain can reach 10-20 times, and the breaking stress is 40-80kPa.

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Abstract

The invention discloses a preparation method for ionic liquid gel with high elongation rate and adjustable elastic modulus. The preparation method comprises the steps of adding an acrylic monomer into imidazole ionic liquid, adding an acrylic crosslinking agent and a light initiator, stirring and fully mixing, pouring the mixed liquid into a glass plate mold clamped with a silica gel pad, putting the glass plate mold into an ultraviolet crosslinking instrument and irradiating for 1-10 hours to obtain the ionic liquid gel with high elongation rate and adjustable elastic modulus. According to the preparation method, the acrylic monomer is crosslinked into the ionic liquid in situ to solidify the ionic liquid to prepare the ionic liquid gel with high elongation rate and adjustable elastic modulus. The method is simple and controllable; compared with the conventional ionic liquid solidifying method, the preparation method disclosed by the invention has the advantages that the tensile modulus (2-50kPa) and the tensile strain (the elongation rate is 3-22 times) of the prepared ionic liquid gel are adjustable; the application range of the ionic liquid serving as a biomaterial, an energy storage material, a driver material and the like is expanded.

Description

technical field [0001] The invention relates to the field of ionic liquid and polymer preparation technology, in particular to a method for preparing an ionic liquid gel with high elongation and adjustable elastic modulus. Background technique [0002] As a "green solvent", ionic liquids have attracted widespread attention due to their non-volatility (almost no saturated vapor pressure), non-flammability, thermal stability, and high electrical conductivity. Ionic liquids are mainly used in electrolytes (such as lithium-ion batteries, fuel cells, solar cells), functional membrane materials (such as separation membranes, catalytic membranes) and biosensors (such as the detection of glucose and dopamine). However, most ionic liquids are liquid at room temperature, which is subject to many limitations in practical applications. Solidifying ionic liquids can not only better play the role of ionic liquids, but also expand their application range, so how to solidify ionic liquids ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F283/06C08F2/48
Inventor 陈咏梅鲁晶晶杨建海
Owner XI AN JIAOTONG UNIV
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