Bio-based ionic gel as well as preparation method and application thereof

An ion gel, bio-based technology, applied in the field of hydrogel, can solve the problems of limited application and low conductivity, and achieve the effect of enhancing ionic conductivity and improving ionic conductivity

Active Publication Date: 2022-02-08
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing sodium alginate hydrogel has low ionic conductivity, which limits its application.

Method used

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  • Bio-based ionic gel as well as preparation method and application thereof
  • Bio-based ionic gel as well as preparation method and application thereof
  • Bio-based ionic gel as well as preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0029] The present invention provides a preparation method of the bio-based ion gel described in the above technical solution, comprising the following steps:

[0030] Mixing methacrylic anhydride sodium alginate monomer, water, ionic liquid, photocrosslinking agent, photoinitiator and hollow tube structure material to obtain photosensitive resin;

[0031] aligning the hollow tube structure material in the photosensitive resin, and obtaining sodium alginate ion gel after photocuring;

[0032] The sodium alginate ion gel is dried to obtain a bio-based ion gel.

[0033] In the present invention, unless otherwise specified, all raw materials are commercially available products well known to those skilled in the art.

[0034] The invention mixes methacrylic anhydride sodium alginate monomer, water, ionic liquid, photocrosslinking agent, photoinitiator and hollow tube structure material to obtain photosensitive resin. In the present invention, the preparation method of the methac...

Embodiment 1

[0052] Dissolve 0.05 g of the methacrylic anhydride sodium alginate monomer in 2.45 mL of deionized water and 1.35 g of 1-ethyl-3-methylimidazolium acetate ionic liquid, stir and mix to form a homogeneous solution; then Add 30 mg of dimethylaminoethyl methacrylate, 3 μL of 2-hydroxy-2-methyl-1-phenyl-1-propanone and 2.5 mg of catkins, and stir overnight to obtain a photosensitive resin.

[0053] The photosensitive resin is poured into a 5mL printing syringe, the extrusion air pressure is 0.03MPa during printing, the needle moving speed is 25mm / s when printing, and the printing angle is 0°. 2 ) to solidify to obtain sodium alginate ion gel;

[0054] The sodium alginate ion gel was dried under vacuum at 40° C. for 3 days to obtain a bio-based ion gel.

[0055] The ion conductivity of the bio-based ion gel prepared in this example is 0.17 S / cm.

Embodiment 2

[0057] Dissolve 0.05 g of the methacrylic acid anhydride sodium alginate monomer prepared in Example 1 in 2.45 mL of deionized water and 1.35 g of 1-ethyl-3-methylimidazolium acetate ionic liquid, stir and mix to form homogeneous solution; then add 30 mg dimethylaminoethyl methacrylate, 3 μL 2-hydroxy-2-methyl-1-phenyl-1-propanone and 1 mg catkin, stir overnight to obtain a photosensitive resin.

[0058] The photosensitive resin is poured into a 5mL printing syringe, the extrusion air pressure is 0.03MPa during printing, the needle moving speed is 25mm / s when printing, and the printing angle is 0°. 2 ) to solidify to obtain sodium alginate ion gel;

[0059] The sodium alginate ion gel was dried under vacuum at 40° C. for 3 days to obtain a bio-based ion gel.

[0060] The ion conductivity of the bio-based ion gel prepared in this example is 0.06 S / cm.

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Abstract

The invention provides bio-based ionic gel as well as a preparation method and application thereof, and relates to the technical field of hydrogel. The bio-based ionic gel provided by the invention comprises a sodium alginate ionic gel matrix and a hollow tube structure material which is directionally arranged in the sodium alginate ionic gel matrix. According to the preparation method, the sodium alginate ionic gel matrix has relatively high porosity, so that the ionic conductivity of the material is improved; the hollow tube structure material is directionally arranged in the sodium alginate ionic gel matrix, so that ion migration is facilitated, and the ionic conductivity of the bio-based ionic gel can be further enhanced; and the result of the embodiment shows that the ionic conductivity of the bio-based ionic gel provided by the invention is 0.02-0.17 S/cm.

Description

technical field [0001] The invention relates to the field of hydrogel technology, in particular to a bio-based ion gel and its preparation method and application. Background technique [0002] Sodium alginate is a polysaccharide natural polymer, soluble in water, but insoluble in organic solvents such as ethanol and acetone. Its molecular chain is bonded by β-D-mannuronic acid (M unit) and α-L-guluronic acid (G unit), wherein the rigidity of the G unit is greater than that of the M unit, and the biological phase of the M unit Capacitance is better than G unit. Because of its good biocompatibility and relatively low price, sodium alginate is widely used in textiles, cosmetics, medicine and other industrial fields. [0003] Sodium alginate, as a common polysaccharide polymer, is often used as the basic material for the preparation of hydrogels, and the chelation of sodium alginate segments with calcium ions is used to achieve the multifunctionality of sodium alginate hydroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08J3/28C08L51/02C08K7/22C08F251/00C08F220/34
CPCC08J3/075C08J3/28C08F251/00C08J2351/02C08K7/22C08F220/34
Inventor 王齐华曹芃锐张耀明王廷梅龚俊辉杨靖
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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