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Conductive hydrogel, preparation method and application thereof

A technology of conductive hydrogel and electrolyte, which is applied in the field of medical polymer materials, can solve the problems of high residual amount, cytotoxicity, inability to fully cure monomers, etc., and achieve the effect of broadening the application range, good initial viscosity and cohesion

Inactive Publication Date: 2019-04-05
六安瑞能新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of process cannot completely cure the monomer, and the residual amount of acrylic acid and acrylamide monomer in the prepared product is relatively high, generally around 100-500ppm. Such monomers containing carbon-carbon double bond groups have significant cytotoxicity , long-term acceptance of the skin has a certain sensitization

Method used

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  • Conductive hydrogel, preparation method and application thereof
  • Conductive hydrogel, preparation method and application thereof
  • Conductive hydrogel, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0035] Examples 1-6 are used to study the effect of sodium polyacrylate content on hydrogel properties.

[0036] The preparation method of conductive hydrogel is as follows:

[0037] Prepare 6 beakers, take by weighing 45g deionized water and add in the beakers respectively, then add (under the condition of rapid stirring, slowly add) 10g (embodiment 1), 15g (embodiment 2), 20g ( Example 3), 30g (Example 4), 40g (Example 5), 50 (Example 6) g sodium polyacrylate, fully dissolved and mixed evenly. Then, the 6 bottles of aqueous solution obtained above were jointly processed as follows: 27g of glycerin and 3g of polyethylene 600 dilaurate were added to the aqueous solution of sodium polyacrylate, and slowly stirred and mixed uniformly. Then weigh 4g of urethane acrylate oligomer, 3g of potassium chloride, 0.3g of photoinitiator 1173, 0.1g of photoinitiator TPOL, and 0.1g of citric acid, and add them to the mixture in sequence, and stir slowly until they are completely dissolved....

Embodiment 7-11

[0043]Examples 7-11 are used to study the effect of urethane acrylate oligomers on the properties of hydrogels. Others all prepare conductive hydrogel according to the operation steps of Example 3, test the performance of different content polyurethane acrylate oligomer hydrogels, and record in Table 2 (Example 3 is also added in Table 2 as a control group ).

[0044] Table 2: Hydrogel properties of different urethane acrylate oligomer contents

[0045]

[0046]

[0047] It can be seen from Table 2 that the urethane acrylate oligomer mainly acts as a crosslinking agent, increasing the content of the urethane acrylate oligomer can enhance the cohesion and initial viscosity of the hydrogel, and the holding force of the hydrogel increases. The 180° peel strength was enhanced, while the skin residue of the hydrogel was significantly reduced. But the content of urethane acrylate oligomer is too high, the 180o peel strength of hydrogel weakens, the content of preferred ureth...

Embodiment 12-15

[0049] Examples 12-15 are used to compare the effect of different crosslinkers.

[0050] Select N, N-methylene bisacrylamide (MBA, embodiment 12), polyethylene glycol 400 diacrylate (embodiment 13), pentaerythritol tetraacrylate (embodiment 14), aluminum glycinate (embodiment 15), etc. The monomer is used as a cross-linking agent, and the others are prepared according to the operation steps of Example 1. The influence of different cross-linking agents on the performance of the hydrogel is recorded in Table 3 (Example 1 is also added as a control group. in Table 3).

[0051] Table 3: Properties of hydrogels prepared with different crosslinking agents

[0052]

[0053] It can be seen from Table 3 that N,N-methylenebisacrylamide (MBA), polyethylene glycol 400 diacrylate, and pentaerythritol tetraacrylate were used as cross-linking monomers to prepare hydrogels, and the finished products had a certain 180° peel strength. However, the holding power of hydrogel is poor, and the...

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Abstract

The invention relates to the technical field of medical high polymer materials, in particular to a conductive hydrogel, a preparation method and an application thereof. The conductive hydrogel comprises the following components in percentage by weight: 10-50 parts of sodium polyacrylate, 0.1-10 parts of polyurethane acrylate oligomer, 20-50 parts of deionized water, 20-50 parts of humectants, 1-10parts of electrolytes, 0.1-1 part of a photoinitiator and 0.01-1 part of a preservative. The invention provides an ultraviolet light medical conductive hydrogel, the preparation method and the application thereof, so as to solve the defect that the application of the conductive hydrogel is limited to a certain extent due to the fact that the residual amount of monomers in the hydrogel in the prior art is high, and the finished product has certain cytotoxicity and sensitization.

Description

technical field [0001] The invention relates to the technical field of medical polymer materials, in particular to a conductive hydrogel and its preparation method and application. Background technique [0002] Hydrogel is a kind of polymer gel material with water as the dispersion medium and a three-dimensional network cross-linked structure. Conductive hydrogel is a kind of hydrogel, which combines the dual characteristics of hydrogel and conductive material, and can have different conductivity ranges under the premise of maintaining structural stability. Medical conductive hydrogel has certain pressure sensitivity. It also has certain conductivity. Its main feature is that in the presence of no solvent, it can be bonded to human skin only by contact pressure, and it will not leave residue when peeled off. After being combined with special medical equipment , can transmit the current signal very well. Therefore, it is widely used in medical and health fields such as med...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08L33/02C08L75/14
CPCC08J3/075C08J2333/02C08J2475/14
Inventor 付春青陈世明楼钢锋
Owner 六安瑞能新材料科技有限公司
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