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Preparation method and application of corn straw all-component membrane

A technology of corn stalks and full components, applied in chemical instruments and methods, membranes, membrane technology, etc., can solve the problems of low utilization rate of deep processing, waste of feed resources, low value, etc., and achieve good UV resistance and dissolution process The effect of simplicity and short production process cycles

Pending Publication Date: 2021-06-22
BEIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Corn stalks are one of the high-yield agricultural and forestry wastes in my country. Due to the low utilization rate of deep processing, more than 60% of corn stalks and processing by-products are piled up, discarded, burned or directly without treatment, except for some of them used as feed, fertilizer and wood-based panel industry. Returning to the field not only wastes precious feed resources in vain, but also causes serious damage to the environment
Corn stalks are rich in amino acids, protein, cellulose, calcium, phosphorus and other substances. However, most of the current applications of corn stalks are relatively low-value and require pretreatment for component separation. If the whole biomass resources such as corn stalks can be combined High-value utilization can effectively alleviate environmental pollution caused by combustion and solve problems such as shortage of some resources

Method used

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  • Preparation method and application of corn straw all-component membrane
  • Preparation method and application of corn straw all-component membrane
  • Preparation method and application of corn straw all-component membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A method for preparing a full-component film of corn stalks, comprising the steps of:

[0040] 1) Pretreatment: Cut the corn stalks into 5 cm sections, after dedusting, cleaning and drying, pulverize with a pulverizer, and pass through a 90-mesh sieve to obtain corn stalk powder;

[0041] 2) Dissolving: put the corn stalk powder obtained in step 1) into a zinc bromide solution with a mass concentration of 75%, the mass ratio of the corn stalk powder to the zinc bromide solution is 1:25, and stir and dissolve at 80°C. The stirring and dissolving time was 45min to obtain a solution;

[0042] 3) Film making: Pour the solution obtained in step 2) into a glass plate to form a film, place it in a ventilated place for 1 hour, wash the film with a large amount of distilled water to remove residual solvent, and cover the cleaned film evenly with two glass plates Put them together in a vacuum drying oven at 60°C for 10 hours, and then peel off the film from the glass plate to ob...

Embodiment 2

[0044] A method for preparing a full-component film of corn stalks, comprising the steps of:

[0045] 1) Pretreatment: cut the corn stalks into 6 cm sections, after dedusting, cleaning and drying, pulverize with a pulverizer, and pass through an 80-mesh sieve to obtain corn stalk powder.

[0046] 2) Dissolution: put the corn stalk powder obtained in step 1) into a lithium bromide solution with a mass concentration of 65%, the mass ratio of the corn stalk powder to the lithium bromide solution is 1:25, and stir and dissolve at 120°C. The stirring and dissolving time is 60min, obtain lysate;

[0047] 3) Membrane production: Pour the solution obtained in step 2) into a glass plate to form a film, place it in a ventilated place for 1.5 hours, wash the film with a large amount of distilled water to remove residual solvent, and cover the cleaned film with two glass plates Evenly place them together in a vacuum drying oven at 50°C for 12 hours, and then peel off the film from the gl...

Embodiment 3

[0049] A method for preparing a full-component film of corn stalks, comprising the steps of:

[0050] 1) Pretreatment: Cut corn stalks into 10 cm sections, after dedusting, cleaning and drying, pulverize with a pulverizer, pass through a 100-mesh sieve to obtain corn stalk powder.

[0051] 2) Dissolving: Put the corn stalk powder obtained in step 1) into a calcium bromide solution with a mass concentration of 75%, the mass ratio of the corn stalk powder to the calcium bromide solution is 1:25, and stir and dissolve at 130°C. Stirring and dissolving time was 20min to obtain a solution;

[0052] 3) Film making: Pour the solution obtained in step 2) into a glass plate to form a film, place it in a ventilated place for 1 hour, wash the film with a large amount of distilled water to remove residual solvent, and cover the cleaned film evenly with two glass plates Put them together in a vacuum drying oven at 40°C for 12 hours and then peel off the film from the glass plate to obtain...

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Abstract

The invention discloses a preparation method and application of a corn straw all-component membrane, and belongs to the field of biomass membrane materials. The preparation method comprises the following steps: performing pretreatment such as cutting, cleaning, drying and the like on corn straws, heating, stirring and dissolving in an inorganic salt solution, pouring the obtained dissolved solution on a glass plate, extending to form a membrane, placing in a ventilated place, cleaning the membrane, uniformly placing in a vacuum drying oven by using a glass plate clamping cover, drying, and stripping the membrane from the glass plate to obtain the corn straw all-component membrane. The corn straw all-component membrane prepared by the method has good ultraviolet resistance, hydrophilicity, filterability and tensile resistance, the preparation method is simple and environment-friendly, and the corn straw all-component film has wide application prospects in the industries of building decoration materials, medical facilities, food processing and packaging, industry and urban sewage treatment and the like.

Description

technical field [0001] The invention relates to the technical field of biomass film materials, in particular to a preparation method and application of a corn stalk full-component film. Background technique [0002] Corn stalks are one of the high-yield agricultural and forestry wastes in my country. Due to the low utilization rate of deep processing, more than 60% of corn stalks and processing by-products are randomly stacked, discarded, burned or directly processed without treatment, except for some used as feed, fertilizer and wood-based panel industry. Returning to the field not only wastes precious feed resources in vain, but also causes serious damage to the environment. Corn stalks are rich in amino acids, proteins, cellulose, calcium, phosphorus and other substances. However, most of the current applications of corn stalks are relatively low-value and require pretreatment for component separation. High-value utilization can effectively alleviate environmental polluti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/10B01D69/02B01D67/00
CPCB01D71/10B01D69/02B01D67/0002B01D2325/36B01D2325/24
Inventor 李翔宇宋晓敏徐文彪时君友段喜鑫李亚茹
Owner BEIHUA UNIV
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