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Preparation method of rosin derivative modified polyacrylamide hydrophilic gel

A technology of polyacrylamide and rosin derivatives, which is applied in the field of hydrogel, can solve the problems that limit the research and development of hydrogel, and achieve the effect of low cost, low swelling rate and simple operation

Active Publication Date: 2017-02-08
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on the chemical cross-linking system and cross-linking agents of traditional hydrogels, which limits the research and development of hydrogels.

Method used

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  • Preparation method of rosin derivative modified polyacrylamide hydrophilic gel
  • Preparation method of rosin derivative modified polyacrylamide hydrophilic gel
  • Preparation method of rosin derivative modified polyacrylamide hydrophilic gel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 8.3g of fumapimaric acid, 7.62g of oxalyl chloride, and 30mL of tetrahydrofuran, react at room temperature for 4h, then add polyethylene glycol 200 12g, react at 40°C for 12h, and spin evaporate to obtain polyethylene glycol fumapimaric acid 200 esters. Polyethylene glycol 200 fumapimaric acid was dissolved in 30 mL of tetrahydrofuran, and 7.62 g of acryloyl chloride was added dropwise at room temperature, and reacted for 4 hours to obtain a free-radical polymerizable rosin-based derivative. Weigh 1g of acrylamide, 0.15g of free radical polymerizable rosin derivative and dissolve in 8.85g of 7% sodium lauryl sulfate aqueous solution, add 0.008g of ammonium persulfate, 25μL N,N,N', N'-tetramethylethylenediamine was reacted at 45° C. for 24 hours to obtain rosin derivative-modified polyacrylamide hydrogel. The swelling rate is 45.4 times, the tensile strain is 1500%, the compression rate is 96.4%, the initial decomposition temperature is 290.0°C, and the maximum de...

Embodiment 2

[0030] Weigh 1g of acrylamide, 0.20g of free-radical polymerizable rosin derivative (prepared by the method in Example 1) and dissolve in 8.8g of 7% sodium lauryl sulfate aqueous solution, add 0.008g of potassium persulfate, 0.01 g of sodium bisulfite was reacted at 40° C. for 24 hours to obtain rosin derivative-modified polyacrylamide hydrogel. The swelling rate is 29.5 times, the tensile strain is 800%, the compression rate is 93.2%, the initial decomposition temperature is 287.1°C, and the maximum decomposition temperature is 401.5°C.

Embodiment 3

[0032] Weigh 1g of acrylamide, 0.25g of free-radical polymerizable rosin derivative (prepared by the method in Example 1) and dissolve in 8.75g of 10% sodium lauryl sulfate aqueous solution, add 0.008g of ammonium persulfate, 25 μL of N,N,N',N'-tetramethylethylenediamine was reacted at 40°C for 24 hours to obtain rosin derivative-modified polyacrylamide hydrogel. The swelling rate is 22 times, the tensile strain is 600%, the compression rate is 95%, the initial decomposition temperature is 288.4°C, and the maximum decomposition temperature is 405.9°C.

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Abstract

The invention discloses a preparation method of a rosin derivative modified polyacrylamide hydrophilic gel. The preparation method comprises the following sequential steps of A, carrying out acylating chlorination on fumaropimaric acid to obtain fumaropimaric acid acyl chloride; B, sequentially reacting the fumaropimaric acid acyl chloride obtained through the step A with polyethylene glycol and acryloyl chloride to obtain a hydrophilia polymerizable rosin derivative; C, dissolving acrylamide and the hydrophiliapolymerizable rosin derivative obtained through the step B into an aqueous surfactant solution, adding an initiator, carrying out thermal initiation reaction for 2 to 48h, and preparing the rosin derivative modified polyacrylamide hydrophilic gel. The preparation method provided by the invention is simple and easy to operate, and low in cost; the obtained rosin derivative modified polyacrylamide hydrophilic gel is colorless and transparent, good in compression performance, high in tenacity, and high in heat resistance, and has a wide application prospect on the fields such as drug sustained release, tissue repair and sewage treatment.

Description

technical field [0001] The invention relates to a preparation method of polyacrylamide hydrogel modified by rosin derivatives, belonging to the field of hydrogel. Background technique [0002] Hydrogel is a hydrophilic polymer material with a three-dimensional network structure formed by chemical cross-linking or physical cross-linking, and its water absorption rate can exceed 99%. Hydrogel contains a large amount of water and has a porous structure, which makes it have good biocompatibility, and has been widely studied in the fields of drug sustained release, superadsorption, biological tissue engineering, and water treatment. Traditional hydrogels use N,N-methylene bisacrylamide as a crosslinking agent, which has poor mechanical properties, poor toughness, high water swelling rate, and is easily denatured in water. In order to improve the strength of the hydrogel, the mechanical strength of the hydrogel can be significantly improved by using the traditional chemical cross...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/40
CPCC08F220/56C08F220/40
Inventor 商士斌张海波杨艳平沈明贵黄新王丹刘鹤宋杰宋湛谦
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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