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Method for preparing absorbent material by micro-wave radiation of potato fecula industry slag grafted polymeric acrylate

A technology of potato starch and industrial waste residue is applied in the field of preparing water-absorbing materials, which can solve the problems of environmental pollution, anaerobic corruption, water pollution and the like, and achieve the effects of low energy consumption, shortened reaction period and low cost.

Inactive Publication Date: 2008-04-16
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing starch waste residues are discarded and randomly piled up, forming water pollution, causing the river water to consume dissolved oxygen therein, and promoting the reproduction of algae and aquatic organisms. Shrimp, shellfish and other aquatic animals may be suffocated to death, causing serious environmental pollution

Method used

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  • Method for preparing absorbent material by micro-wave radiation of potato fecula industry slag grafted polymeric acrylate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 11 parts of 10% NaOH, add 0.5 parts of potato starch industrial waste residue, make it fully dissolved, and obtain solution A; under cooling in an ice-water bath, mix 10 parts of acrylic acid with a concentration of 4.2 mol / l with 18 parts of 20% hydrogen Sodium oxide was neutralized to 80%, and solution B was obtained. After mixing the two solutions of A and B obtained above, add 0.102 parts of ammonium persulfate and 0.045 parts of N, N'-methylenebisacrylamide, and stir thoroughly. After stirring evenly, place it in a microwave reaction device, adjust the radiation power to 180W, and the radiation time is 3min20s to carry out graft polymerization. After the reaction was completed, the product was dried, pulverized, and its water absorption was measured to be 758mL / g. And use FT-IR, TEM, TG-DTA, etc. to characterize.

Embodiment 2

[0023] Take 11 parts of 10% NaOH, add 0.5 parts of potato starch industrial waste residue, make it fully dissolved, and obtain solution A; under cooling in an ice-water bath, mix 10 parts of acrylic acid with a concentration of 3.8 mol / l with 18 parts of 20% hydrogen Sodium oxide was neutralized to 80%, and solution B was obtained. After mixing the above two solutions of A and B, add 0.0518 parts of ammonium persulfate and 0.045 parts of N,N'-methylenebisacrylamide, and stir thoroughly. After stirring evenly, place it in a microwave reaction device, adjust the radiation power to 180W, and the radiation time is 3min to carry out graft polymerization. After the reaction was completed, the product was dried and pulverized, and its water absorption was measured to be 647mL / g. And use FT-IR, TEM, TG-DTA, etc. to characterize.

Embodiment 3

[0025] Take 11 parts of 10% NaOH, add 0.5 parts of potato starch industrial waste residue, make it fully dissolved, and obtain solution A; under cooling in an ice-water bath, mix 2.5 parts of acrylic acid with a concentration of 3.5 mol / l with 5 parts of 20% hydrogen Sodium oxide was neutralized to 80%, and solution B was obtained. After mixing the above two solutions of A and B, add 0.041 part of ammonium persulfate and 0.065 part of N,N'-methylenebisacrylamide, and stir thoroughly. After stirring evenly, place it in a microwave reaction device, adjust the radiation power to 180W, and the radiation time to 2.5min to carry out graft polymerization. After the reaction was completed, the product was dried and pulverized, and its water absorption was measured to be 304 mL / g. And use FT-IR, TEM, TG-DTA, etc. to characterize.

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Abstract

The present invention relates to a method for preparing the water-absorbing material by microwave radiating potato starch industrial solid wast to graft acrylate. The process is to add sodium hydroxide, potassium hydroxide or the crylic acid which is neutralized partly by ammonia to the potato starch industrial solid wast dissolved in the aqueous alkali, then to stir the mixture and add initiator and cross-linking agent to mix uniformly, to place the system in the microwave reaction device, to make potato starch industrial solid wast to graft polymerization acrylate in a certain radiation power and radiation time, to dry the product, and to crush the product to obtain the end product. The water-absorbing material obtained in the invention has a high water absorption and a low cost, and can be used in the field of ecology environment as a wind erosion-resistance agent, sand-fixing and grass-planting agent, a water-absorbing and a water-retaining material in the arid agriculture, etc.

Description

technical field [0001] The invention relates to a method for preparing a water-absorbing material, in particular to a method for preparing a water-absorbing material by grafting and polymerizing acrylate with microwave irradiated potato starch industrial waste. Background technique [0002] Potatoes are annual herbaceous plants that are widely distributed in my country. Its tubers are rich in starch, so people use it to process starch. In the potato starch industry, the dry starch content of each ton of potato is about 16-17%, and the slag is 3-4%, that is, for every ton of dry starch produced, 250kg of dry slag is obtained. The dry residue contains 20-25% cellulose, 20-25% pectin and 40% starch. It can be calculated from this: about 250 tons of dry slag per thousand tons of dry starch, and about 2,500 tons of dry slag as a by-product of 10,000 tons of dry starch. However, most of the existing starch waste residues are discarded and randomly piled up, forming water pollut...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F2/46
Inventor 王云普刘汉士张继刘汉功孙文秀王利平郭小芳刘东杰温慧慧
Owner NORTHWEST NORMAL UNIVERSITY
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