Water hyacinth carboxymethyl cellulose salt-resistant and super absorbent resin and preparation method thereof

A technology of carboxymethyl cellulose and superabsorbent resin, which is applied in the field of water-absorbent resin preparation, can solve the problems of non-degradable water-absorbent resin, occupying land for landfill, and lower water absorption rate, etc., to achieve high repeated water absorption capacity, minimize pollution, and save energy. The effect of cost of use

Pending Publication Date: 2022-05-13
WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when there is a small amount of small molecule electrolytes in the water, the water absorption rate of this type of resin will be severely reduced, and electrolytes with a large number of ions or ion clusters are often dissolved in the real environment solution.
In addition, traditional water-absorbent resins are not biodegradable, and they are often disposed of in landfills after they are discarded, which not only increases transportation costs, but also occupies landfill sites.

Method used

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  • Water hyacinth carboxymethyl cellulose salt-resistant and super absorbent resin and preparation method thereof
  • Water hyacinth carboxymethyl cellulose salt-resistant and super absorbent resin and preparation method thereof
  • Water hyacinth carboxymethyl cellulose salt-resistant and super absorbent resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A water hyacinth carboxymethyl cellulose salt-resistant-superabsorbent resin, the preparation method of which comprises the steps of:

[0027] Take 10g of acrylic acid, add sodium hydroxide with a mass fraction of 25% to neutralize the acrylic acid to a neutralization degree of 65%, add 20g of dimethylaminopropyl acrylamide to the neutralized acrylic acid, and keep stirring at 400r / min 0.5h, after mixing evenly, a mixed monomer solution was obtained.

[0028] The sample was prepared by the aqueous solution polymerization method. First, mix 1 g of water hyacinth carboxymethylated cellulose with 20 g of pure water and put it into a three-necked round-bottomed flask. Heat the oil bath to 90 ° C, stir with 400 r / min magnetic force for 0.5 h, condense and reflux for about 1h, cool down to 60°C and keep warm.

[0029] Nitrogen was passed through water hyacinth carboxymethylated cellulose at 15mL / min, and 0.15g potassium persulfate and 0.05g sodium bisulfite were added as ini...

Embodiment 2

[0032] A water hyacinth carboxymethyl cellulose salt-resistant-superabsorbent resin, the preparation method of which comprises the steps of:

[0033] Take 10g of acrylic acid, add sodium hydroxide with a mass fraction of 25% to neutralize the acrylic acid to a neutralization degree of 75%, add 20g of dimethylaminopropyl acrylamide to the neutralized acrylic acid, and keep stirring at 200r / min 0.8h, after mixing uniformly, a mixed monomer solution was obtained.

[0034] The sample was prepared by the aqueous solution polymerization method. First, mix 1 g of water hyacinth carboxymethylated cellulose with 20 g of pure water and put it into a three-necked round-bottomed flask. Heat the oil bath to 90 ° C, stir with 300 r / min magnetic force for 1 h, and condense and reflux for about 1 h. , cooled to 60°C and kept warm.

[0035] Nitrogen gas was passed through water hyacinth carboxymethylated cellulose at 10mL / min, and 0.15g potassium persulfate and 0.05g sodium bisulfite were add...

Embodiment 3

[0038] A water hyacinth carboxymethyl cellulose salt-resistant-superabsorbent resin, the preparation method of which comprises the steps of:

[0039] Take 10g of acrylic acid, add sodium hydroxide with a mass fraction of 25% to neutralize the acrylic acid to a neutralization degree of 65%, add 20g of dimethylaminopropyl acrylamide to the neutralized acrylic acid, and keep stirring at 300r / min 1h, after mixing uniformly, a mixed monomer solution was obtained.

[0040] The sample was prepared by the aqueous solution polymerization method. First, mix 1 g of water hyacinth carboxymethylated cellulose with 20 g of pure water and put it into a three-necked round-bottomed flask. Heat the oil bath to 90 ° C, continue stirring at 200 r / min for 0.8 h, condense and reflux for about 1h, cool down to 60°C and keep warm.

[0041] Nitrogen was passed through water hyacinth carboxymethylated cellulose at 12mL / min, and 0.15g potassium persulfate and 0.05g sodium bisulfite were added as initia...

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Abstract

The invention discloses a water hyacinth carboxymethyl cellulose salt-resistant and super absorbent resin and a preparation method thereof. The preparation method comprises the following steps: firstly, respectively preparing a mixed monomer solution and a water hyacinth carboxymethyl cellulose solution; introducing nitrogen into the prepared water hyacinth carboxymethyl cellulose solution, adding an initiator and a cross-linking agent to react, adding a mixed monomer solution, stirring, sealing and standing to obtain a resin sample; and finally, shearing and soaking the resin sample, drying, crushing and sieving to obtain the water hyacinth carboxymethyl cellulose salt-resistant and super absorbent resin. According to the prepared high-molecular water-absorbent resin, the degradation performance of the resin is improved, meanwhile, the harm problem caused by water hyacinth is solved, hydrolysis fermentation can be conducted after the resin is abandoned, liquid obtained after degradation can serve as fertilizer and solid to be further treated, and pollution minimization and resource maximization in the whole process can be achieved through application of the resin.

Description

technical field [0001] The invention belongs to the technical field of water-absorbent resin preparation, and in particular relates to a water hyacinth carboxymethyl cellulose salt-tolerant-superabsorbent resin and a preparation method thereof. Background technique [0002] Superabsorbent resin is a functional polymer material with a three-dimensional network structure. Its water absorption performance is extremely high, and it can usually absorb liquids hundreds to thousands of times more than its own weight. Because of its excellent water absorption and retention properties, it has been widely used It is used in agriculture and forestry, medical and health industry, environmental protection industry and intelligent component industry. Acrylic water-absorbing resin has been widely used because of its low cost and high water absorption rate. However, when there is a small amount of small molecule electrolytes in the water, the water absorption rate of this type of resin wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/02C08F220/06C08F220/60
CPCC08F251/02C08F220/06C08F220/60
Inventor 张皖秋陈琪
Owner WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO LTD
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