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Cellulose-based magnetic aerogel material and preparation method thereof

A technology of cellulose and airgel, applied in the direction of magnetism of organic materials/organic magnetic materials, can solve the problem of non-degradable cost of substrates, and achieve the effect of ensuring stability, low cost, and ensuring structural uniformity

Active Publication Date: 2015-04-01
HAIMEN ZHUOWEI TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to overcome the disadvantages of existing magnetic airgel materials such as non-degradable substrates and high cost, and to provide a new type of magnetic airgel material and its preparation method using degradable cellulose as the substrate

Method used

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  • Cellulose-based magnetic aerogel material and preparation method thereof
  • Cellulose-based magnetic aerogel material and preparation method thereof
  • Cellulose-based magnetic aerogel material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Weigh 12 g of microcrystalline cellulose, place it in 150 ml of 0.5 wt % sodium hydroxide solution, boil for 40 min, wash with deionized water 4 times, and dry to obtain alkaline microcrystalline cellulose. Take 10g of alkaline microcrystalline cellulose and place it in 120ml of ethanol, add 8ml of 10wt% sodium hydroxide solution and 16g of 3-chloro-2-hydroxypropyltrimethylammonium chloride dropwise under stirring, and react in a water bath at 45°C After 3 hours, the pH value of the product was adjusted to neutral with dilute hydrochloric acid, filtered with suction, washed with methanol and absolute ethanol in sequence, and dried in vacuum to constant weight to obtain quaternized microcrystalline cellulose. Add 8.0g of quaternized microcrystalline cellulose and 150ml of deionized water into a three-necked flask, protect it with nitrogen, stir at 25°C for 10min, add 9g of cerium ammonium nitrate, react for 20min, and then add 2-acrylamide-2-methyl Propanesulfonic acid 1...

Embodiment 2

[0048] Weigh 8 g of microcrystalline cellulose, place it in 120 ml of 0.2 wt % sodium hydroxide solution, boil for 60 min, wash with deionized water 4 times, and dry to obtain alkaline microcrystalline cellulose. Take 6g of basic microcrystalline cellulose and place it in 10ml of acetone, add 5ml of 12wt% sodium hydroxide solution and 12g of 3-chloro-2-hydroxypropyltrimethylammonium chloride dropwise under stirring, and react in a water bath at 45°C After 3 hours, the pH value of the product was adjusted to neutral with dilute hydrochloric acid, filtered with suction, washed with methanol and absolute ethanol in sequence, and dried in vacuum to constant weight to obtain quaternized microcrystalline cellulose. Add 6g of quaternized microcrystalline cellulose and 150ml of deionized water into a three-necked flask, protect it with nitrogen, stir at 25°C for 10min, add 8g of cerium ammonium nitrate, react for 20min, and then add 2-acrylamide-2-methylpropane 12g of sulfonic acid, a...

Embodiment 3

[0051] Weigh 10g of cotton fiber, put it in 1000ml concentration of 18wt% sodium hydroxide solution, let it stand at room temperature for 45min, take it out, wash it with deionized water, dry it, and place it in 1000ml concentration of 0.4wt% sodium hydroxide solution , boiled for 60 minutes, washed repeatedly with deionized water, and dried to obtain alkaline cellulose. Take 5g of basic cellulose and place it in 10ml of ethanol, add 4.5ml of 18wt% sodium hydroxide solution and 10g of 3-chloro-2-hydroxypropyltrimethylammonium chloride dropwise under stirring, and react in a water bath at 45°C for 3h Finally, adjust the pH value of the product to neutral with dilute hydrochloric acid, filter it with suction, wash it with methanol and absolute ethanol in sequence, and dry it in vacuum to constant weight to obtain quaternized ammonium cellulose. Add 4g of quaternized cellulose and 120ml of deionized water into a three-necked flask, protect it with nitrogen, stir at 25°C for 10min...

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Abstract

The invention discloses a cellulose-based magnetic aerogel material and a preparation method thereof. The method comprises the following steps: carrying out chemical modification, thereby obtaining high-activity amphoteric cellulose; firmly combining the amphoteric cellulose and a graphene oxide through electrostatic interaction and hydrogen bonding forces and the like to build a framework of the aerogel material. Disperse loading of a magnetic nano ferroferric oxide can be achieved by virtue of the advantages of high surface activity and super-large specific surface area; the structure uniformity and the stability of the magnetic aerogel of the amphoteric cellulose are ensured through the steps of cross-linking, freeze-drying and the like; the characteristics of high specific surface properties, good affinity, biodegradability and the like of the cellulose are kept by the magnetic aerogel; and the magnetic aerogel obtains high surface activity and superparamagnetic property, has the advantages of low cost, high strength, amphoteric characteristic, biocompatibility and the like, has the characteristics of high specific surface area, high loading capacity, high surface activity, intelligent positioning and the like, and has significant adsorption capacity on pollutants such as heavy metal ions and organic molecules.

Description

technical field [0001] The invention relates to a magnetic airgel material and a preparation method thereof, in particular to a magnetic airgel material based on amphoteric cellulose and a preparation method thereof, belonging to the field of advanced functional composite materials. Background technique [0002] Magnetic porous materials can be used in general sewage treatment, targeted drug carriers, targeted functional stents, targeted blood vessel blocking materials, targeted medical adsorption materials, microwave adsorption (such as: radar absorption materials) and other fields. focus on. The above application fields require the corresponding materials to have the characteristics of low density, large specific surface area, strong adsorption capacity, and strong loading capacity, while good magnetic properties are the necessary conditions for easy recycling of materials, strong targeting ability, and microwave adsorption. Existing materials are often difficult to meet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/32C08K3/04C08K3/22C08J9/28C08J3/24C08B13/00H01F1/42
Inventor 熊佳庆陈宇岳林红徐思峻
Owner HAIMEN ZHUOWEI TEXTILE CO LTD
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