Method for simple and rapid preparation of hydrogel bilayer film with high adhesion acting force

A hydrogel single-layer, high-adhesion technology, applied in the field of functional polymer materials, can solve the problems of complex preparation process and low adhesive energy, and achieve high adhesive strength, simple preparation method, excellent strength and elongation at break The effect of length

Inactive Publication Date: 2018-12-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a simple and fast method for preparing a high-adhesion force hydroge

Method used

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  • Method for simple and rapid preparation of hydrogel bilayer film with high adhesion acting force
  • Method for simple and rapid preparation of hydrogel bilayer film with high adhesion acting force
  • Method for simple and rapid preparation of hydrogel bilayer film with high adhesion acting force

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) In a 20mL glass bottle, disperse 1.5g of aluminum hydroxide sol with a concentration of 16.88% in 9.0g of pH=6 MES buffer evenly, then wrap the reaction bottle with tinfoil at room temperature, and stir for 30min by bubbling with nitrogen to remove Dissolved oxygen, then added monomers 0.217g acrylic acid (AA) and 2.17g N,N-dimethylacrylamide (DMAA) and 30mg photoinitiator 2-hydroxy-4'-(2-hydroxyethoxy)- 2-Methyl propiophenone, continue stirring with nitrogen for 15 minutes, then vacuumize for 20 minutes to remove residual gas, and finally inject the solution into a specific glass mold filled with nitrogen, and put the mold into an ultraviolet crosslinking instrument, at a wavelength of 365nm After irradiating with ultraviolet light for 60 minutes, the photoinitiator initiates free radical polymerization of the monomer, and finally obtains ADAgels, whose morphology is as follows figure 1 shown.

[0036] (2) Add and weigh 0.107g of morpholineethanesulfonic acid into...

Embodiment 2

[0042] (1) In a 20mL glass bottle, disperse 0.3g of aluminum hydroxide sol with a concentration of 16.88% in 10.2g of pH=6 MES buffer evenly, then wrap the reaction bottle with tinfoil at room temperature, and stir with nitrogen gas for 30min to remove Dissolved oxygen, add monomer 0.145g AA and 1.285g acrylamide (AM) and stir rapidly under nitrogen gas at room temperature for 15min, then evacuate for 20min to remove residual gas, put the mixed solution in an ice-water bath to cool for a period of time and sonicate for 10min , and then under the protection of ice bath and nitrogen environment, 8 μL of catalyst TEMED and 0.02 g of initiator potassium persulfate were added successively, and after stirring for 1 min, the solution was quickly injected into a specific glass mold filled with nitrogen, sealed and polymerized at room temperature for 48 hours, and then heated The initiator initiates the radical polymerization reaction of the monomer, and finally obtains AMAgels.

[004...

Embodiment 3

[0047] (1) In a 20mL glass bottle, disperse 1.69g of 15% zirconium hydroxide sol in 8.31g of pH=6 MES buffer evenly, then wrap the reaction bottle with tinfoil at room temperature, and stir for 30min by bubbling nitrogen to remove Dissolved oxygen, then add monomer 0.217g AA and 2.17g DMAA and 30mg photoinitiator 2-methyl-1-[4-methylthiophenyl]-2-morpholinyl-1-acetone, continue nitrogen Stir for 15 minutes, then evacuate for 20 minutes to remove the residual gas, and finally inject the solution into a specific glass mold filled with nitrogen, put the mold into an ultraviolet crosslinking instrument, and irradiate it with ultraviolet light with a wavelength of 365nm for 60 minutes. The monomer undergoes free radical polymerization reaction, and finally ADZ gels are obtained.

[0048] (2) Add and weigh 0.107g of morpholineethanesulfonic acid into 9.9mL of deionized water, stir well and then add 0.2g of chitosan, and adjust the pH to 6.0 with 1.0mol / L NaOH solution, take 2ml of t...

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Abstract

The invention relates to a method for simple and rapid preparation of a hydrogel bilayer film with high adhesion acting force, and belongs to the field of functional polymer materials. According to the method, nano aluminum hydroxide sol, nano zirconium hydroxide sol, nano clay and the like are used as crosslinkers, acrylic acid, N,N-dimethacrylamide, acrylamide, N-isopropyl acrylamide and the like are used as monomers, and in-situ free radical polymerization is used for preparing various nano complex hydrogels; based on high-strength hydrogels, a bridged polymer is prepared by activation reaction of chitosan, sodium alginate and other macromolecules with carboxyl of EDC/NHS, and the bridged polymer is bonded by self or with other hydrogels to prepare the hydrogel bilayer film with high adhesion acting force in a wet environment; the bilayer film has extremely strong adhesion acting force, simple preparation method and easy operation in preparation process, greatly expands the application of the hydrogels, and has strong application potential in intelligent bionic drive, flexible sensing parts, biomedical materials and other fields.

Description

technical field [0001] The invention relates to a simple and rapid method for preparing a hydrogel bilayer film with high adhesion force, belonging to the field of functional polymer materials. Background technique [0002] Hydrogel has a wide range of applications and strong application value in many fields such as intelligent bionics, flexible sensor devices, and biomedical materials, which has also attracted more and more attention from researchers around the world. The related application of hydrogel has always been a hot and difficult research point, especially in its application related to adhesion, such as the adhesion between gel and gel and between gel and organism. need. Due to the poor adhesion of hydrogel itself, its application in many fields is limited. However, most of the hydrogels reported at present are physically adhered to the interface by van der Waals force and hydrogen bonds, and the adhesion energy is mostly low, only 1-10 J m -2 about. This great...

Claims

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Application Information

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IPC IPC(8): C08F220/54C08F220/06C08F2/48C08J5/18C08L33/26C08L5/08C08L89/00C08L5/04
CPCC08F2/48C08F220/54C08J5/18C08J2333/26C08J2405/04C08J2405/08C08J2489/00C08F220/06
Inventor 李欢军王昭硕李飞波张公正严爽
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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