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Preparation method of sodium alginate and cellulose hydrogel spheres

A technology of cellulose hydrogel and sodium alginate, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problem that water absorption cannot be used as an adsorbent.

Inactive Publication Date: 2017-05-31
SHAANXI SHENGMAI PETROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although its rich anionic carboxyl groups have potential adsorption capacity for cationic dyes, its strong water absorption and solubility in water prevent it from being a stable adsorbent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Stir and dissolve NaOH, urea, water and natural bamboo fiber to obtain a transparent cellulose solution;

[0022] Stirring and dissolving sodium alginate and deionized water at room temperature to obtain a sodium alginate solution;

[0023] Then mix the transparent cellulose solution and sodium alginate solution, and add it dropwise to the acid regeneration solution prepared by chloroform with a 1 mL disposable dropper. After solidification, take out the gel sample; rinse to obtain alginate Sodium and cellulose hydrogel balls.

Embodiment 2

[0025] Stir and dissolve NaOH, urea, water and natural bamboo fiber to obtain a transparent cellulose solution;

[0026] Stirring and dissolving sodium alginate and deionized water at room temperature to obtain a sodium alginate solution;

[0027] Then mix the transparent cellulose solution and sodium alginate solution, and add it dropwise to the acid regeneration solution prepared by chloroform with a 1 mL disposable dropper. After solidification, take out the gel sample; rinse to obtain alginate Sodium and cellulose hydrogel balls.

[0028] Wherein, the mass ratio of NaOH, urea, water and natural bamboo fiber is 7:12:79:2. When the sodium alginate and deionized water are stirred and dissolved at room temperature, the mixing mass ratio is 1:49. The mixing ratio of the transparent cellulose solution and the sodium alginate solution is 1:3. The curing time is 5min. The rinsing is performed by flowing deionized water. The mass fraction of the transparent cellulose solution ...

Embodiment 3

[0030] Stir and dissolve NaOH, urea, water and natural bamboo fiber to obtain a transparent cellulose solution;

[0031] Stirring and dissolving sodium alginate and deionized water at room temperature to obtain a sodium alginate solution;

[0032] Then mix the transparent cellulose solution and sodium alginate solution, and add it dropwise to the acid regeneration solution prepared by chloroform with a 1 mL disposable dropper. After solidification, take out the gel sample; rinse to obtain alginate Sodium and cellulose hydrogel balls.

[0033] Wherein, the mass ratio of NaOH, urea, water and natural bamboo fiber is 7:12:79:2. When the sodium alginate and deionized water are stirred and dissolved at room temperature, the mixing mass ratio is 1:49. The mixing ratio of the transparent cellulose solution and the sodium alginate solution is 1:3. The curing time is 10min. The rinsing is performed by flowing deionized water. The mass fraction of the transparent cellulose solution...

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Abstract

The invention relates to the technical field of functional materials and particularly relates to a preparation method of sodium alginate and cellulose hydrogel spheres. The preparation method comprises the following steps: stirring and dissolving NaOH, urea, water and natural bamboo fibers at -12 DEG C, so as to obtain a transparent cellulose solution, and stirring and dissolving sodium alginate and deionized water at room temperature, so as to obtain a sodium alginate solution; mixing the transparent cellulose solution with the sodium alginate solution to obtain a mixed solution, dropwise adding the mixed solution into an acidy regeneration solution prepared from trichloromethane by virtue of a 1mL disposable dropper, carrying out curing for 5 minutes, and taking out a gel sample; and flushing the gel sample with flowing deionized water, so as to obtain the sodium alginate and cellulose hydrogel spheres. When the mass fraction of sodium alginate is less than or equal to 50%, gel stays at a stable spherical structure and internally presents a threadlike crossed three-dimensional network porous structure; and sodium alginate and cellulose composite gel are combined together through physical aggregation.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a preparation method of sodium alginate and cellulose hydrogel balls. Background technique [0002] With the advancement of industrial technology, a large number of synthetic dyes are used in textile and printing and dyeing industries, but due to the complex aromatic structure in synthetic dyes, it is difficult to be biodegraded. Therefore, the discharge of wastewater containing dyes not only damages the environment but also greatly threatens human health. According to the survey, workers engaged in the textile printing and dyeing industry have a high incidence of bladder cancer; breast cancer and the use of hair dyes also have a significant relationship. Therefore, the removal of dyes from wastewater is of great significance to environmental protection and human health. [0003] Many methods are used to remove dyes in water, one of which is photocatalytic degradat...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01J20/24B01J20/28C02F1/28C02F101/30C02F103/30
CPCB01J20/24B01J20/22B01J20/28047B01J2220/4825B01J2220/4843C02F1/286C02F2101/308C02F2103/30
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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