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Calcium alginate-sodium polyacrylate modified composite film and preparation method thereof

A technology of sodium polyacrylate and calcium alginate, applied in textile/flexible product manufacturing, climate sustainability, final product manufacturing, etc., can solve unseen problems, achieve easy recovery, strong water absorption, and less dissolution residue Effect

Active Publication Date: 2022-05-27
美高怡生生物电子科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the above-mentioned modified materials have not yet been seen in patents or literature reports.

Method used

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  • Calcium alginate-sodium polyacrylate modified composite film and preparation method thereof
  • Calcium alginate-sodium polyacrylate modified composite film and preparation method thereof
  • Calcium alginate-sodium polyacrylate modified composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] S1 Prepare materials, prepare 3 kg of 2wt% sodium alginate solution by a known method; prepare 0.5wt% soybean protein, 1mmol / L 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide Hydrochloride (abbreviated as EDC hydrochloride), 0.1wt% calcium chloride crosslinking agent, a total of 2 kg (must be used up within 0.5 hours); prepare 3 kg of 0.5wt% calcium chloride solution; prepare 18-purpose polystyrene Acrylic 0.5kg; choose 1m 2 Filter cloth as a carrier; prepare a small atomizer;

[0025] S2 prepare the first layer (the first calcium alginate layer), take 1m 2 Clean filter cloth, spray the sodium alginate solution evenly on its surface with a sprayer, the dosage is 1kg / m 2 , quickly spray the cross-linking agent on the surface of sodium alginate, the dosage is 1kg / m 2 , to obtain the first calcium alginate layer;

[0026] S3 prepares the second layer (sodium polyacrylate layer), quickly spreads the sodium polyacrylate solid powder on the surface of the first layer, and t...

Embodiment 2

[0031] S1 prepare materials, prepare 3 kg of 5wt% sodium alginate solution by a known method; prepare 5wt% soybean protein, 2mmol / L 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide salt Salt (referred to as EDC hydrochloride), the crosslinking agent of 1wt% calcium chloride, a total of 2 kilograms (must be used up within 0.5 hours); prepare 3 kilograms of 1wt% calcium chloride solution; prepare 1 kilogram of 100-purpose polyacrylic acid ; select 1m 2 Filter cloth as a carrier; prepare a small atomizer;

[0032] S2 prepare the first layer (the first calcium alginate layer), take 1m 2 Clean filter cloth, spray the sodium alginate solution on its surface evenly with a sprayer, the dosage is 1kg / m 2 , quickly spray the cross-linking agent on the surface of sodium alginate, the dosage is 1kg / m 2 , to obtain the first calcium alginate layer;

[0033] S3 prepares the second layer (sodium polyacrylate layer), quickly spreads the sodium polyacrylate solid powder on the surface of the ...

Embodiment 3

[0038] S1 prepare materials, prepare 3 kg of 8.0wt% sodium alginate solution by a known method; prepare 10wt% soybean protein, 10mmol / L 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide The crosslinking agent of hydrochloride and 6wt% calcium chloride, a total of 2 kilograms (must be used up within 0.5 hours); prepare 2 kilograms of 6wt% calcium chloride solution; prepare 2 kilograms of 200-purpose polyacrylic acid; choose 1m 2 Filter cloth as a carrier; prepare a small atomizer;

[0039] S2 to prepare the first layer (the first calcium alginate layer), take 1m 2 Clean filter cloth, spray the sodium alginate solution evenly on its surface with a sprayer, the dosage is 1kg / m 2 , quickly spray the cross-linking agent on the surface of sodium alginate, the dosage is 1kg / m 2 , to obtain the first calcium alginate layer;

[0040] S3 prepare the second layer (sodium polyacrylate layer), quickly spread the sodium polyacrylate solid powder on the surface of the first layer, and the dosag...

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Abstract

The invention discloses a calcium alginate-sodium polyacrylate modified composite film and a preparation method thereof. The calcium alginate-sodium polyacrylate modified composite film is formed by cross-linking three layers of films: the first calcium alginate layer A continuous film is supported by a porous layered material, on which a sodium polyacrylate layer is connected by a cross-linking agent to form a second layer, and the surface of the second layer is bridged with a calcium alginate layer to form a third layer. The calcium alginate-sodium polyacrylate modified composite membrane prepared by the preparation method of the present invention has a water absorption ratio of more than 50 times, can be reused, has good mechanical properties, and has little dissolution residue in water, and can be used for dehydration and concentration of particle suspensions , is especially suitable for large-scale concentration of suspensions of small-scale nanoparticle materials that are difficult to centrifuge, and is a practical biodegradable material.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a calcium alginate-sodium polyacrylate modified composite membrane and a preparation method thereof. Background technique [0002] The downstream separation of bioengineering often faces the problem of dewatering and concentration of particulate matter, such as the concentration of E. coli fermentation broth, the concentration of yeast fermentation broth, the concentration of protein, and the concentration of antibody-modified microspheres, which are key components of in vitro diagnostic reagents. The concentration methods of these processes usually include precipitation centrifugation, membrane filtration, etc. However, for small-scale particulate matter (such as diameter less than 0.1 microns), large-scale centrifugation will be a more difficult problem. For example, the use of precipitation and centrifugation will introduce precipitants and affect subsequent processes or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/18D06N3/00
CPCD06N3/183D06N3/009D06N2209/1614Y02P70/62
Inventor 刘建杰
Owner 美高怡生生物电子科技(北京)有限公司