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Abandoned white potato haulm/organic montmorillonite composite high-water uptake material and method of producing the same

An organic montmorillonite, potato stem and leaf technology, applied in the polymer field, can solve problems such as waste and environmental pollution, and achieve the effects of shortening the reaction period, reducing pollution and convenient operation

Inactive Publication Date: 2009-04-08
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is not only a waste, but also pollutes the environment

Method used

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  • Abandoned white potato haulm/organic montmorillonite composite high-water uptake material and method of producing the same
  • Abandoned white potato haulm/organic montmorillonite composite high-water uptake material and method of producing the same
  • Abandoned white potato haulm/organic montmorillonite composite high-water uptake material and method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Get 0.106kg of organic montmorillonite and disperse it in 11 kg of water, then add 0.264kg of potato stems and leaves (after drying, pulverizing, and filtering with a 200 mesh sieve), mix uniformly, then add potassium persulfate 0.008kg, N, N-methylenebisacrylamide 0.006kg, acrylamide 0.6kg, acrylic acid 0.6kg (acrylic acid is neutralized to 70% by 20% sodium hydroxide in an ice-water bath), fully stirred to obtain a pre-reactant ; Then the obtained pre-reactant was placed in a microwave reaction device, the radiation power was adjusted to 180W, and the radiation time was 5.5min to carry out graft polymerization. After the reaction is completed, the product is soaked in methanol for 4 hours, dried at 40°C, and crushed to obtain the product.

[0043] Measure its water absorption and other properties: its distilled water absorption rate is 470, and the rate of absorbing salt water (0.9%) is 54.

Embodiment 2

[0045] Get 0.096kg of organic montmorillonite and disperse it in 12kg of water, then add 0.286kg of potato stems and leaves (dried, crushed, and filtered through a 200-mesh sieve), mix well, then add 0.008kg of potassium persulfate in turn, N, N- 0.018kg of methylene bisacrylamide, 0.9kg of acrylamide, 0.3kg of acrylic acid (acrylic acid is neutralized by 20% sodium hydroxide in an ice-water bath to a neutralization degree of 75%), fully stirred to obtain a pre-reactant; Then the obtained pre-reactant was placed in a microwave reaction device, the radiation power was adjusted to 180W, and the radiation time was 3.5min to carry out graft polymerization. After the reaction is completed, the product is soaked in methanol for 8 hours, dried at 50°C, and crushed to obtain the product.

[0046] Measure its water absorption and other properties: the ratio of absorbing distilled water is 393, and the ratio of absorbing salt water (0.9%) is 43.

Embodiment 3

[0048] Take 0.06kg of organic montmorillonite and disperse it in 13kg of water, then add 0.3kg of potato stems and leaves (dried, pulverized, and filtered through a 200-mesh sieve), mix well, and then add 0.008kg of potassium persulfate in turn, N, N- Methylenebisacrylamide 0.008kg, acrylamide 0.6kg, acrylic acid 0.6kg (acrylic acid is neutralized to 70% by sodium hydroxide in an ice-water bath), fully stirred to obtain a pre-reactant; then the obtained The pre-reactants were placed in a microwave reaction device, the radiation power was adjusted to 180W, and the radiation time was 4.5min to carry out graft polymerization. After the reaction is completed, the product is soaked in methanol for 10 hours, dried at 30°C, and crushed to obtain the product.

[0049] Measure its water absorption and other properties: the ratio of absorbing distilled water is 773, and the ratio of absorbing salt water (0.9%) is 68.

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Abstract

The invention provides a composite high water absorbent material prepared by waste potato stems and leaves and organic montmorillonite. The potato stems and leaves are dried, crushed, carried out graft copolymerization with crylic acid and acrylic amide under microwave radiation and compounded with organic montmorillonite simultaneously, thus obtaining the organic and inorganic composite water absorbent material. Test proves that the multiplying factor of the distilled water absorption of the high water absorbent material prepared by the invention can reach 200 times to 780 times of the dry weight of the high water absorbent material and the multiplying factor of salt water absorption can reach 20 times to 70 times of the dry weight of the high water absorbent material.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and relates to a water-absorbing material and its preparation, in particular to a high-water-absorbing composite material compounded by taking potato stems and leaves and organic montmorillonite as raw materials. The invention also relates to a preparation method of the composite material. Background technique [0002] Potatoes are annual herbaceous plants that are widely distributed in my country. Because its stems and leaves are inedible, they are generally discarded. This is not only a waste, but also pollutes the environment. Since its main component is cellulose, it can be used to prepare water-absorbing materials. [0003] Montmorillonite is a layered silicate with metal cations adsorbed between the layers. The intercalation agent can enter between the layers through ion exchange to increase the interlayer distance, and the polymer can enter through intercalation compounding. Bet...

Claims

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Application Information

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IPC IPC(8): C08F251/02C08F2/44C08F2/46C08K9/04
Inventor 王云普梁燕张继
Owner NORTHWEST NORMAL UNIVERSITY
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