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MXene material reinforced conductive hydrogel

A conductive hydrogel and hydrogel technology, applied in the field of biomedical materials, can solve problems such as poor mechanical ability and poor conductivity, and achieve good biodescriptive properties, enhanced conductivity, and good comprehensive performance

Pending Publication Date: 2020-10-09
GUANGDONG PROV MEDICAL INSTR INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the existing problems such as poor mechanical ability and poor conductivity of hydrogel, a conductive hydrogel enhanced by MXene material proposed by the present invention

Method used

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  • MXene material reinforced conductive hydrogel

Examples

Experimental program
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Effect test

Embodiment 1

[0044] 1. Preparation of hydroxyl-rich (polyvinyl alcohol) hydrogels

[0045] Dissolve 2 g of polyvinyl alcohol in 10 mL of deionized aqueous solution, heat and stir at 95 °C for 3 h, the polyvinyl alcohol hydrogel is completely dissolved, and then add 10 mg / mL (5 mL) of Ti 3 C 2 After the nanosheet aqueous solution is completely dissolved, add 0.04M (mol / L) sodium borate aqueous solution, continue heating and stirring for 1h, cool to room temperature, and place it in a hydrogel template to obtain MXene-doped polyvinyl alcohol hydrogel . The size of MXene-doped polyvinyl alcohol hydrogel is 1 cm × 1 cm × 1.5 cm.

[0046] 2. Preparation of conductive hydrogels enhanced by MXene materials

[0047] Soak the MXene-doped polyvinyl alcohol hydrogel (0.1780g) obtained in step 1 in 20wt% ferrous chloride aqueous solution (1mL), ultrasonically disperse at room temperature for 10min, let it stand for 1 day, and rinse with deionized water After rinsing 3 times, the conductive hydroge...

Embodiment 2

[0049] 1. Preparation of hydroxyl-rich (polyvinyl alcohol) hydrogels

[0050] Dissolve 1 g of polyvinyl alcohol in 10 mL of deionized aqueous solution, heat and stir at 90 °C for 3 h, the polyvinyl alcohol hydrogel is completely dissolved, and then add 5 mg / mL (5 mL) of Ti 3 C 2 After the nanosheet aqueous solution is completely dissolved, add 0.04M (mol / L) sodium borate aqueous solution, continue heating and stirring for 2 hours, cool to room temperature, and place it in a hydrogel template to obtain MXene-doped polyvinyl alcohol hydrogel . The size of MXene-doped polyvinyl alcohol hydrogel is 1 cm × 1 cm × 1.5 cm.

[0051] 2. Preparation of conductive hydrogels enhanced by MXene materials

[0052] Soak the MXene-doped polyvinyl alcohol hydrogel (0.0890g) obtained in step 1 in 10wt% ferrous chloride aqueous solution (1mL), ultrasonically disperse at room temperature for 10min, let it stand for 1 day, and rinse with deionized water After rinsing 3 times, the conductive hyd...

Embodiment 3

[0054] 1. Preparation of hydroxyl-rich (polyvinyl alcohol) hydrogels

[0055] Dissolve 2 g of polyvinyl alcohol in 10 mL of deionized aqueous solution, heat and stir at 95 °C for 3 h, the polyvinyl alcohol hydrogel is completely dissolved, and then add 10 mg / mL (5 mL) of Ti 3 C 2 After the nanosheet aqueous solution is completely dissolved, add 0.04M (mol / L) sodium borate aqueous solution, continue heating and stirring for 1h, cool to room temperature, and place it in a hydrogel template to obtain MXene-doped polyvinyl alcohol hydrogel . The size of MXene-doped polyvinyl alcohol hydrogel is 1 cm × 1 cm × 1.5 cm.

[0056] 2. Preparation of conductive hydrogels enhanced by MXene materials

[0057] Soak the MXene-doped polyvinyl alcohol hydrogel (0.1780g) obtained in step 1 in a 30wt% aluminum chloride aqueous solution (1mL), ultrasonically disperse at room temperature for 10min, let it stand for 1 day, and rinse with deionized water 3 times, the conductive hydrogel enhanced ...

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Abstract

The invention discloses MXene material reinforced conductive hydrogel. The MXene material reinforced conductive hydrogel is formed by hydrogen bond crosslinking of an MXene material, hydroxyl-containing hydrogel and metal cations. The preparation method of the MXene material reinforced conductive hydrogel comprises the following steps: (1) carrying out cross-linking on hydroxyl-containing hydrogeland an MXene material solution to obtain MXene cross-linked hydrogel; and 2) soaking the MXene cross-linked hydrogel in a solution containing metal cations for cross-linking to obtain the MXene material reinforced conductive hydrogel. The elastic strength of the MXene material reinforced conductive hydrogel is remarkably improved, the conductivity is remarkably enhanced, the comprehensive performance is remarkably improved, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of biomedical materials, in particular to a conductive hydrogel reinforced by MXene materials. Background technique [0002] Hydrogels are prepared from hydrophilic polymers such as poly(methyl methacrylate), polysaccharide polymers, or polyvinylpyrrolidone. The characteristic of hydrogel is that it only swells but does not dissolve. Such polymers tend to be internally crosslinked during polymerization, forming a loose and porous internal structure capable of absorbing large volumes of interstitial fluid. However, traditional hydrogels usually exhibit poor mechanical properties, poor toughness, and poor repeatability, which greatly limit their applications in the fields of biomedicine and electronic technology. [0003] Traditional polymer hydrogels are usually formed by chemical cross-linking. The inhomogeneous dispersion of chemical cross-linking agents leads to inhomogeneous hydrogel networks and many ...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08J3/24C08J7/14C08L29/04C08K7/00C08K3/14C08K3/28C08K3/38
CPCC08J3/075C08J3/24C08J7/14C08J2329/04C08K2201/011C08K7/00C08K3/14C08K3/28C08K2003/387C08K2201/001
Inventor 纪禹行于珊耿志杰国翠平
Owner GUANGDONG PROV MEDICAL INSTR INST
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