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Nanometer composite hydrogel and preparation method thereof

A nano-hydrogel and nano-composite technology, which is applied in the field of preparation of nano-composite hydrogels, can solve problems such as poor water absorption performance

Inactive Publication Date: 2007-02-07
SUZHOU NUOYIMAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liu et al. used clay as a polyacrylamide cross-linking agent, which has high resilience, but poor water absorption performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 1.5 grams of clay and dissolve it in 28 grams of deionized water solution, put it in a 150ml beaker and stir for 2 hours. After the clay is completely dissolved in the water solution to form a uniform and stable solution, weigh 3 grams of acrylamide, add it to the beaker and continue stirring. At the same time, 0.03 grams of potassium persulfate was weighed and dissolved in 2 grams of deionized water, and 0.024 grams of catalyst TEMED was added to the beaker at the same time, and stirred evenly to form a prepolymer solution.

[0024] Nitrogen gas was bubbled into the prepolymer solution for 30 minutes to remove residual oxygen in the solution. Then inject the solution into a glass tube with a length of 60 mm and a diameter of 5 mm, keep at 30° C., and react for 24 hours. The preliminarily obtained gel was placed in a thermal incubator at 40° C. and kept warm for 5 days to obtain a nanogel.

[0025] The mechanical property of composite gel and the water-absorbing ...

Embodiment 2

[0031] Weigh 1.5 grams of clay and dissolve it in 28 grams of deionized water solution, place it in a 150ml beaker and stir for 2 hours. After the clay is completely dissolved in the water solution to form a uniform and stable solution, weigh 4.5 grams of AAm and add it to the beaker to continue stirring. At the same time, 0.03 grams of potassium persulfate was weighed and dissolved in 2 grams of deionized water, and 0.024 grams of catalyst TEMED was added to the beaker at the same time, and stirred evenly to form a prepolymer solution.

[0032] Nitrogen gas was bubbled into the prepolymer solution for 30 minutes to remove residual oxygen in the solution. Then inject the solution into a glass tube with a length of 60 mm and a diameter of 5 mm, keep at 30° C., and react for 24 hours. The preliminarily obtained gel was placed in a thermal incubator at 40° C. and kept warm for 10 days to obtain a nanogel.

[0033] The mechanical property of composite gel and the water-absorbing ...

Embodiment 3

[0039] Weigh 1.5 grams of clay and dissolve it in 28 grams of deionized water solution, place it in a 150ml beaker and stir for 2 hours. After the clay is completely dissolved in the water solution to form a uniform and stable solution, weigh 6 grams of AAm and add it to the beaker to continue stirring. At the same time, 0.03 grams of potassium persulfate was weighed and dissolved in 2 grams of deionized water, and 0.024 grams of catalyst TEMED was added to the beaker at the same time, and stirred evenly to form a prepolymer solution.

[0040] Nitrogen gas was bubbled into the prepolymer solution for 40 minutes to remove residual oxygen in the solution. Then inject the solution into a glass tube with a length of 60 mm and a diameter of 5 mm, keep it at 35° C., and react for 30 hours. The preliminarily obtained gel was placed in a thermal incubator at 45° C. and kept warm for 15 days to obtain a nanogel.

[0041] The mechanical property of composite gel and the water-absorbing...

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Abstract

The invention discloses a nanometer compound aquagel and preparing method, which comprises the following steps: polymerizing the prepolymer liquid at 25-35 deg.c for 20-30 h to obtain the product. The monomer is selected from acrylamide. The crosslink is selected from hectorite of modified sodium pyrophosphate. The general formula of chemical structure is Mg5.34Li0.66Si8O20 (OH) 4Na0.66.

Description

technical field [0001] The invention relates to a preparation method of nanocomposite hydrogel. Background of the invention [0002] Polymer hydrogel is a polymer with a three-dimensional network structure that can absorb a large amount of water and swell, and is generally formed by cross-linking hydrophilic homopolymers or copolymers. Hydrogels are insoluble in water, but swell in water. [0003] In the past few decades, there has been a surge of research on environmentally sensitive and physiologically sensitive hydrogels, and the typical response of sensitive hydrogels is the change of hydrogel volume. This volume change is discontinuous, and using this stimuli-responsive property, hydrogels have been applied in the following aspects: in the chemical industry for separation; in medicine for the controlled release of drugs; in the mechanical industry Used to make memory element switches, sensors, etc. [0004] However, because polymer gels are generally formed by cross-...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08F120/56C08K3/32
Inventor 朱美芳刘洋姜永梅张伟张瑜陈彦模
Owner SUZHOU NUOYIMAN IND
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