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Anthraquinone functional cellulose membrane and preparation method thereof

A cellulose membrane, functionalized technology, applied in the fields of material engineering and environmental engineering, chemical engineering, can solve the problems of low content of anthraquinone group, low degree of reaction, affecting the treatment of nitrogen-containing wastewater, etc., to achieve high grafting rate , low cost, simple preparation process

Inactive Publication Date: 2014-04-16
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of a large number of hydroxyl groups in the natural cellulose structure, hydrogen bonds will be formed between molecules, so it is difficult to dissolve in general organic solvents, and direct reaction in organic solvents will cause problems such as low degree of reaction and low content of anthraquinone groups, which will affect its quality. Ability to treat nitrogenous wastewater

Method used

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  • Anthraquinone functional cellulose membrane and preparation method thereof
  • Anthraquinone functional cellulose membrane and preparation method thereof
  • Anthraquinone functional cellulose membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Put 10g of microcrystalline cellulose and 100g of [Amim]Cl into a four-neck flask, raise the temperature to 80°C and keep it warm for 2h, wait for the cellulose to dissolve and cool to room temperature, then add 100g of a pre-prepared 50% thionyl chloride / DMF solution, Raise the temperature to 80°C, stir with magnetic force for 4 hours, cool naturally after the reaction, add distilled water to precipitate the precipitate, filter and wash with water to obtain a light brown solid, dry it in vacuum at 30°C to obtain cellulose chloride, and measure the degree of substitution of the chlorinated cellulose is 1.89;

[0033] Pre-configure 20% NaOH aqueous solution for use. Weigh 10g of the prepared chlorinated cellulose and 200g of DMF into a four-neck flask to dissolve the cellulose, add 1g of NaOH aqueous solution, and finally put in 20g of 1-aminoanthraquinone, heat the oil bath to 100°C, and react with magnetic stirring for 6h. During the reaction Add pre-configured 20% Na...

Embodiment 2

[0039] In this example, ionic liquid [Bmim]Cl was used as a solvent to dissolve microcrystalline cellulose, and the subsequent chlorination process was the same as in Example 1, and the degree of substitution of the prepared chlorinated cellulose was 1.6;

[0040] Weigh 10g of the prepared chlorinated cellulose and 200g of DMF into a four-neck flask to dissolve the cellulose, add 1g of triethylamine, and finally put in 20g of 2-aminoanthraquinone, heat the oil bath to 100°C, and react with magnetic stirring for 6h. During the process, continue to drop triethylamine to keep the pH of the reaction system at 10-12. After the reaction, distilled water was added to precipitate a solid, which was filtered by suction and washed three times with ethanol at 40°C, and dried in vacuum at 30°C to obtain a red solid powder, which was anthraquinone functionalized cellulose. Branch rate is 65%;

[0041] The film-forming process of the prepared anthraquinone functionalized cellulose film mat...

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Abstract

The invention belongs to the technical field of crossing of chemical engineering, materials engineering and environmental engineering, particularly relates to an improvement technology of cellulose membrane materials and a chemical grafting and fixing technology for treating anthraquinones compound carriers of wastewater containing nitrogen, and particularly relates to a method for preparing an anthraquinone functional cellulose membrane by fixing an anthraquinone compound on microcrystalline cellulose by chemical grafting. According to the method, the microcrystalline cellulose is used as a raw material; firstly, ionic liquid is used as a solvent for dissolving the microcrystalline cellulose; thionyl chloride modified cellulose is used for preparing cellulose chloride and then the cellulose chloride is reacted with amino anthraquinone in dimethylformamide to prepare an anthraquinone functional cellulose membrane material; the substitution degree of the prepared cellulose chloride can reach 1.89 and the anthraquinone grafting rate of the anthraquinone functional cellulose membrane reaches 82%; the anthraquinone functional cellulose is prepared by the two-step reaction; the content of anthraquinonyl is high and the grafting rate is high; the fixing effect is stable; finally, the anthraquinone functional cellulose is changed into the membrane by a phase transferring method; the membrane material can be used for accelerating and strengthening the biological degradation process in the treatment of the wastewater containing the nitrogen.

Description

technical field [0001] The invention belongs to the interdisciplinary technical fields of chemical engineering, material engineering and environmental engineering, and specifically relates to the modification technology of cellulose membrane materials and the chemical grafting and fixing technology of anthraquinone compound carriers for treating nitrogen-containing waste water, in particular to microcrystalline fibers The invention discloses a method for preparing anthraquinone functionalized cellulose membrane by chemically grafting and fixing anthraquinone compound. Background technique [0002] Cellulose widely exists in green plants such as trees, cotton, hemp, cereal plants and other higher plants and marine organisms. It is the most abundant renewable resource in nature. Making full use of cellulose not only meets the requirements of "green chemistry", but also can save Non-renewable petroleum and coal resources. The cellulose membrane material made of cellulose as a ...

Claims

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Application Information

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IPC IPC(8): C08L1/08C08B15/06C08J5/18B01D71/10B01D67/00C02F1/44
CPCY02P20/54
Inventor 唐二军李良郭建博袁淼
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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