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Nanometer composite high-molecular dual-network hydrogel and preparation method thereof

A nanocomposite and hydrogel technology, applied in the field of polymer materials, can solve the problem that the mechanical properties of double network hydrogel cannot meet the requirements of use, and achieve the effect of high compressive strength and high tensile strength

Active Publication Date: 2013-12-11
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the mechanical properties of double-network hydrogels prepared by the above methods are far from meeting the requirements of use.

Method used

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  • Nanometer composite high-molecular dual-network hydrogel and preparation method thereof

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Effect test

Embodiment 1

[0025] Weigh 0.012g of nanometer graphene oxide, add 6ml of deionized water, stir for 0.5 hours, ultrasonic for 0.5 to 1 hour, then weigh 1.243g of 2-acrylamide-2-methylpropanesulfonic acid, crosslinking agent N, N 0.037 g of '-methylenebisacrylamide and 0.006 g of initiator potassium persulfate were uniformly dissolved, and the solution was poured into a silicone rubber mold, and reacted at 60° C. for 10 hours to obtain the first network hydrogel. Weigh 14.216g of acrylamide, 0.015g of cross-linking agent N,N'-methylenebisacrylamide, 0.054g of initiator potassium persulfate, add 100ml of deionized water, dissolve evenly, put the first network hydrogel into The solution was swelled for 24 hours, and then reacted at 60° C. for 10 hours to obtain a nanocomposite polymer double network hydrogel. Then use a cutting knife to cut the hydrogel into a dumbbell-shaped sample with a length of 35mm, a width of 10mm, a thickness of 2mm, a gauge length of 15mm, and a width of 4mm for tensi...

Embodiment 2

[0027] Except that the nano-graphene oxide described in Example 1 was changed to nano-scale sodium-based montmorillonite, other conditions were the same as in Example 1. The prepared hydrogels were tested for various mechanical properties, and the results are listed in Table 1.

Embodiment 3

[0029] Except that the amount of nano-scale sodium-based montmorillonite described in Example 2 was changed to 0.062g, other conditions were the same as in Example 2. The prepared hydrogels were tested for various mechanical properties, and the results are listed in Table 1.

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Abstract

The invention provides a high-strength nanometer composite high-molecular dual-network hydrogel and a preparation method thereof, and belongs to the technical field of composite modification of hydrogels. The preparation method of the high-strength nanometer composite high-molecular dual-network hydrogel comprises the following steps of: firstly dissolving a first network monomer, a cross-linking agent and an initiating agent into a water dispersion liquid which contains nanometer particles, and pouring an obtained mixed solution into a mould for heating polymerization to obtain a first network hydrogel; dissolving a second network monomer, the cross-linking agent and the initiating agent into water, placing the first network hydrogel into the solution, swelling for 24 hours, and then carrying out the heating polymerization to obtain the high-strength nanometer composite high-molecular dual-network hydrogel. The high-strength nanometer composite high-molecular dual-network hydrogel provided by the invention is simple in preparation process and superior in property, can be used for enhancing the compression strength of the dual-network hydrogel and keeping higher tensile strength through nanometer enhancement and is widely applied to the fields of biological medicine, agriculture, a building industry, a chemical industry, a mining industry, and the like.

Description

technical field [0001] The invention relates to a high-strength nano-composite polymer double-network hydrogel and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Polymer hydrogel is a kind of polymer material body with a three-dimensional network structure formed by chemical or physical cross-linking with water as the dispersion medium. It can quickly absorb a large amount of water, but it does not dissolve in water, and has a strong water retention capacity. It can maintain a certain shape in water and return to its original shape even after a certain force is applied. As a special "water material", it is very similar to the structure of biological tissues. Looking at the biological world, hydrogel structures can be found in almost all biological tissues. Therefore, hydrogel is the first developed Biomaterials based on human tissue have great application prospects in the fields of tissue engineering and re...

Claims

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Application Information

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IPC IPC(8): C08L33/26C08L33/24C08K9/00C08K3/04C08K3/34C08K7/00C08F220/56C08F220/58
Inventor 东为富黄池光马丕明陈明清倪忠斌
Owner JIANGNAN UNIV
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