Preparation method of high-tenacity and tear-resistant ternary hydrogel based on synergetic enhancement of one-dimensional and two-dimensional nano-materials

A two-dimensional nanomaterial and nanomaterial technology, applied in the field of preparation of high toughness, tear-resistant ternary hydrogel, to achieve the effect of enhanced mechanical strength, good mechanical properties, and excellent tear resistance

Active Publication Date: 2017-08-22
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, few articles have reported the use of this synergy to synthesize nanocomposite hydrogels, so it is necessary to combine this

Method used

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  • Preparation method of high-tenacity and tear-resistant ternary hydrogel based on synergetic enhancement of one-dimensional and two-dimensional nano-materials
  • Preparation method of high-tenacity and tear-resistant ternary hydrogel based on synergetic enhancement of one-dimensional and two-dimensional nano-materials
  • Preparation method of high-tenacity and tear-resistant ternary hydrogel based on synergetic enhancement of one-dimensional and two-dimensional nano-materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Prepare 2 mL of graphene oxide dispersion with a concentration of 0.8 mg / mL and 1 mL of xonotlite nanowire dispersion with a concentration of 16 mg / mL, and then add the two nanomaterial dispersions to 2 mL of deionized water in sequence, Stir magnetically for 10 minutes to obtain a uniform dispersion of nanomaterials.

[0027] 2. Place the nanomaterial dispersion obtained in step 1 in an ice-water bath, weigh 20% of the mass of the nanomaterial dispersion, and add acrylamide, a hydrophilic monomer, into the nanomaterial dispersion, stir to dissolve, and then add the nanomaterial to disperse The initiator ammonium persulfate with a liquid mass of 0.52% was added to the nanomaterial dispersion liquid, and the whole process was completed under nitrogen protection, and the nitrogen flow rate was controlled at 0.6mL / s. After stirring and dissolving, the obtained mixed solution was placed in a vacuum desiccator to remove dissolved oxygen in the mixed solution.

[0028] 3....

Embodiment 2

[0030] 1. Prepare 2 mL of a graphene oxide dispersion with a concentration of 0.8 mg / mL, then add the nanomaterial dispersion to 3 mL of deionized water, and stir magnetically for 10 minutes to obtain a uniform nanomaterial dispersion.

[0031] 2. Place the dispersion obtained in step 1 in an ice-water bath, weigh 20% of the mass of the nanomaterial dispersion, and add acrylamide, a hydrophilic monomer, into the nanomaterial dispersion, stir to dissolve, and then add the mass of the nanomaterial dispersion 0.52% of the initiator ammonium persulfate was added to the dispersion, and the whole process was completed under nitrogen protection, and the nitrogen flow rate was controlled at 0.6mL / s. After stirring and dissolving, the obtained mixed solution was placed in a vacuum desiccator to remove dissolved oxygen in the mixed solution.

[0032] 3. Transfer the mixed solution obtained in step 2 to a 60°C oven for polymerization for 10.5 hours to obtain a binary nano-hydrogel.

Embodiment 3

[0034] 1. Prepare 1 mL of xonotlite nanowire dispersion with a concentration of 16 mg / mL, then add this nanomaterial dispersion into 4 mL of deionized water, and stir magnetically for 10 minutes to obtain a uniform nanomaterial dispersion.

[0035] 2. Place the nanomaterial dispersion obtained in step 1 in an ice-water bath, weigh 20% of the mass of the nanomaterial dispersion, and add acrylamide, a hydrophilic monomer, into the nanomaterial dispersion, stir to dissolve, and then add the nanomaterial to disperse The initiator ammonium persulfate with a liquid mass of 0.52% was added to the nanomaterial dispersion liquid, and the whole process was completed under nitrogen protection, and the nitrogen flow rate was controlled at 0.6mL / s. After stirring and dissolving, the obtained mixed solution was placed in a vacuum desiccator to remove dissolved oxygen in the mixed solution.

[0036] 3. Transfer the mixed solution obtained in step 2 to a 60°C oven for polymerization for 10.5 ...

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Abstract

The invention discloses a preparation method of high-tenacity and tear-resistant ternary hydrogel based on synergetic enhancement of one-dimensional and two-dimensional nano-materials. According to the preparation method, a two-dimensional graphene nanosheet and a one-dimensional xonotlite nanowire are taken as crosslinking agents, and monomers can be simultaneously crosslinked with two different nanomaterials so as to form a uniform network structure; and meanwhile, a graphene oxide sheet and the xonotlite nanowire can generate a very strong synergetic enhancement effect, so that the prepared ternary hydrogel has very good tenacity and excellent tear resistance.

Description

technical field [0001] The invention relates to a preparation method of a high-toughness and tear-resistant ternary hydrogel based on synergistic reinforcement of one-dimensional and two-dimensional nanomaterials, belonging to the technical field of nanomaterials. Background technique [0002] The cross-linked network hydrogel is a water-containing polymer matrix, which is cross-linked by certain chemical or physical means to form a three-dimensional network structure. As a kind of polymer soft material with high water content, hydrogel has been widely used in sensing and detection, drug release, artificial muscle and other fields in recent years. Most hydrogels synthesized by traditional methods inevitably exhibit limited mechanical strength, poor toughness, and low stretchability, which seriously limit their practical applications in the above fields. Japanese scientist T. Takehisa first proposed nanocomposite hydrogel in 2002, which uses nanoparticles (clay flakes) as a ...

Claims

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Application Information

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IPC IPC(8): C08F120/56C08F2/44C08K7/00C08K3/04C08K3/34
CPCC08F2/44C08F120/56C08K3/04C08K3/34C08K7/00C08K2201/011
Inventor 从怀萍李森秦海利
Owner HEFEI UNIV OF TECH
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