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Multiple network compound aquogel material with high mechanical intensity and electrochemical activity and preparation method thereof

A technology of composite hydrogel and mechanical strength, applied in the field of polymer composite hydrogel materials, can solve the problems of poor mechanical strength, limited application, difficult to meet, etc., and achieve the effect of excellent mechanical properties and broad application prospects

Inactive Publication Date: 2009-12-16
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common problem of conductive polymer hydrogel materials prepared by traditional methods is that the mechanical strength of these materials is poor, which is difficult to meet the needs of practical applications.
However, so far, no examples have been found of incorporating conductive polymer hydrogel materials into multiple network hydrogels to make the hydrogel materials electrochemically active.
This limits the application of such materials in electrochemical sensors, supercapacitors, electrochemical actuators, artificial muscles, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1. A kind of polyacrylamide hydrogel is the preparation of the double network composite hydrogel material of the I network, poly (3,4-ethylenedioxythiophene) hydrogel is the II network

[0034] Dissolve 7.1g of acrylamide monomer, 0.07g of N,N'-methylenebisacrylamide, and 0.04g of potassium persulfate in 200ml of distilled water, and react at 60°C for 3h to obtain polypropylene as the first network amide hydrogel. Cut the prepared polyacrylamide hydrogel into the desired shape with a blade, and take a volume of 2 cm 3 Soak the hydrogel sample in 10ml of aqueous solution containing 0.2g sodium polystyrene sulfonate and 0.02ml 3,4-ethylenedioxythiophene for 0.5h, take it out and wipe off the liquid adsorbed on the surface with filter paper. Soak the soaked hydrogel sample in 5ml of an aqueous solution containing 3g of ferric nitrate for 0.5h, take it out and balance it in 50ml of distilled water for 7 days, and replace the distilled water every 24h to obtain a...

Embodiment 2

[0036] Example 2. A preparation of a double network composite hydrogel material with polyacrylamine hydrogel as the first network and polyaniline hydrogel as the second network

[0037] Dissolve 7.1g of acrylamine monomer, 0.75g of N,N'-methylenebisacrylamide, and 0.01g of ammonium persulfate in 30ml of distilled water, and react at 80°C for 12h to obtain polypropylene as the first network Amine hydrogel. The obtained polyacrylamine hydrogel is cut into the desired shape with a blade, and the volume is 15 cm 3 Soak the hydrogel sample in 150ml of an aqueous solution containing 30.8g of poly(2-acrylamide-2-methylpropanesulfonic acid) and 20ml of aniline for 24h. After taking it out, wipe off the liquid adsorbed on the surface with filter paper. Soak the soaked hydrogel sample in 90ml of aqueous solution containing 100g of cerium ammonium nitrate for 12 hours, take it out and balance it in 2000ml of distilled water for 7 days, and replace the distilled water every 24 hours to o...

Embodiment 3

[0039] Example 3. A preparation of a double network composite hydrogel material with poly(N-isopropylacrylamide) hydrogel as the first network and polypyrrole hydrogel as the second network

[0040] Dissolve 7.1g of N-isopropylacrylamide monomer, 0.5g of N,N'-methylenebisacrylamide, and 0.03g of sodium persulfate in 100ml of distilled water, and react at 70°C for 6h to obtain the first Network of poly(N-isopropylacrylamide) hydrogels. The obtained poly(N-isopropylacrylamide) hydrogel is cut into the desired shape with a blade, and the volume is 10 cm 3 Soak the hydrogel sample in 100ml of an aqueous solution containing 15.3g of sulfonated polyaniline, 10ml of pyrrole and 1g of calcium chloride for 12h, and wipe off the liquid adsorbed on the surface with filter paper after taking it out. Soak the soaked hydrogel sample in 50ml of an aqueous solution containing 60g of potassium dichromate for 6 hours, take it out and balance it in 1000ml of distilled water for 7 days, and repl...

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Abstract

The invention relates to a multiple network compound aquogel material with high mechanical intensity and electrochemical activity and a preparation method thereof; artificially-synthesized aquogel material and natural aquogel material are used as a first network or a second network, electric-conducting macromolecule aquogel material is used as a second and a third network, so as to prepare the compound aquogel material with a multiple network structure. The networks at different levels are provided with different mechanical performances which are mutually acted on, so as to lead the compound aquogel material to have high mechanical intensity; the electric-conducting macromolecule aquogel material is used as a constituent of the compound aquogel, so as to lead the compound aquogel material to have electrochemical activity. The multiple network compound aquogel material with high mechanical intensity and electrochemical activity can be applied to the field of electrochemical sensors, supercapacitors, electrochemical exciters, artificial muscles and the like. The invention also discloses a preparation method thereof.

Description

technical field [0001] The invention relates to a polymer composite hydrogel material, specifically, a synthetic hydrogel material or a natural hydrogel material is combined with a conductive polymer hydrogel material to obtain a combination of high mechanical strength and Electrochemically active multiple network composite hydrogel materials. Background technique [0002] Conductive polymer hydrogel materials, which have both the swelling properties of hydrogel and the conductivity of conductive polymers, are expected to be applied in microelectromechanical systems, and have aroused great interest. The traditional preparation methods of such materials include combining conductive polymers with surfactants, alcohols, etc. to obtain physically cross-linked hydrogels, or directly filling conductive polymer particles as a component into other types of hydrogel materials. Composite hydrogels, etc. The common problem of conductive polymer hydrogel materials prepared by traditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/26C08L65/00C08L39/00C08L79/02C08L33/24C08L79/04C08L33/02C08L5/08C08L1/26C08L89/00C08F220/56C08F226/02C08F220/54C08F220/06C08G61/12C08G73/02C08G73/06
Inventor 陆云戴庭阳卿旭堂
Owner NANJING UNIV
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