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Preparation method of collagen/chitosan imprinted material

An imprinting material, chitosan technology, applied in chemical instruments and methods, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of easy acid solubility, low strength, limited metal ion chelating ability, etc.

Active Publication Date: 2017-05-10
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in the above-mentioned prior art, provides a kind of preparation method of collagen / chitosan imprinting material, in order to overcome chitosan as functional monomer easily acid-soluble, strength is low, the chelating ability to metal ion is limited The disadvantage of adding collagen and chitosan together as a functional monomer

Method used

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  • Preparation method of collagen/chitosan imprinted material
  • Preparation method of collagen/chitosan imprinted material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dissolve 0.5g chitosan and 0.5g collagen fibers in 20ml acetic acid solution and stir for 2h until the solution is transparent, slowly add 0.05g EDTA to the solution, stir at room temperature for 2 hours, add 2ml glutaraldehyde / formaldehyde solution dropwise and stir for 1h , add 12.5ml of 0.8g / L copper sulfate solution and stir for 1 hour to form a blue gel. Finally, dry at a low temperature of 50°C to obtain the collagen / chitosan imprinted material.

[0021] Add 0.01g of collagen / chitosan imprinting material to 50ml of Cu(II) solution with an initial concentration of 100mg / L, shake for 24 hours, filter and separate, take the supernatant and use the copper ion electrode method to measure the residual Cu(II) concentration of the solution , The calculated removal rate is 99%.

Embodiment 2

[0023] Dissolve 0.5g chitosan and 0.8g collagen fibers in 20ml acetic acid solution and stir for 2h until the solution is transparent, slowly add 0.1g EDTA to the solution, stir for 2 hours at room temperature, add 2ml glutaraldehyde / formaldehyde solution dropwise and stir for 2h , add 12.5ml of 0.8g / L copper sulfate solution and stir for 2 hours to form a blue gel. After drying at 50°C, the collagen / chitosan imprinted material was obtained.

[0024] Add 0.01g of collagen / chitosan imprinting material to 50ml of Cu(II) solution with an initial concentration of 100mg / L, shake for 24 hours, filter and separate, take the supernatant and use the copper ion electrode method to measure the residual Cu(II) concentration of the solution , The calculated removal rate is 99%.

Embodiment 3

[0026] Dissolve 0.5g chitosan and 1.0g collagen fibers in 20ml acetic acid solution and stir for 2h until the solution is transparent, slowly add 0.2g EDTA to the solution, stir for 2 hours at room temperature, add 2ml glutaraldehyde / formaldehyde solution dropwise and stir for 2h , add 10ml of 1g / L copper sulfate solution and stir for 2 hours to form a blue gel. After drying at 50°C at low temperature, soak and wash off the blue color with 0.1mol / L hydrochloric acid solution and 0.1mol / L sodium hydroxide solution respectively. Dry at 50°C to obtain collagen / chitosan imprinted material

[0027] Take 0.01g of collagen / chitosan imprinting material and add it to 50ml of Cu(II) solution with an initial concentration of 200mg / L, shake for 24 hours, filter and separate, take the supernatant and use the copper ion electrode method to measure the residual Cu(II) concentration of the solution , The calculated removal rate is 99%.

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Abstract

The invention relates to a preparation method and an application of an imprinted material with a collagen and chitosan blend as a functional monomer, EDTA (ethylene diamine tetraacetic acid) as a crosslinking agent and Cu(II) as a template. The preparation method of the material comprises steps as follows: collagen and chitosan are dissolved in an acetate solution in a certain proportion, a certain amount of EDTA is slowly added to the solution, the mixture is stirred at the room temperature for a certain time period, then a proper amount of glutaraldehyde is added, a copper sulfate solution with certain concentration is added, and the mixture is stirred for a certain period of time and dried at a low temperature. The mixture is washed alternately with hydrochloric acid and a sodium hydroxide solution to remove the template Cu<2+> , then washed repeatedly with distilled water and dried at a low temperature, and the Cu(II) imprinted material can be obtained. The material has good Cu<2+> removal capacity, the mechanical strength of chitosan can be improved through blending of collagen and chitosan, and the Cu<2+> removal capacity of chitosan can also be improved.

Description

technical field [0001] The invention relates to a Cu(II) imprinting material, in particular to a preparation method of a collagen / chitosan imprinting material. Background technique [0002] Chitosan is a natural polymer material with excellent properties. Because there are a large number of hydroxyl groups and amino groups in the molecule, it has a good chelating effect on many metal ions and can effectively adsorb or trap metal ions in water. However, chitosan is a weakly alkaline high molecular polymer, which will soften, lose or even dissolve under acidic conditions, which is not conducive to recycling and reuse, thus limiting its practical application. The action of cross-linking agent and chitosan can improve its acid solubility, but because the cross-linking occupies a large number of active groups such as hydroxyl and amino groups, the adsorption performance of chitosan after cross-linking is greatly reduced. Contents of the invention [0003] The present invention...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C08J9/26C08L5/08C08L89/00C02F101/20
CPCB01J20/24B01J2220/4825C02F1/286C02F2101/20C08J9/26C08J2201/0444C08J2305/08C08J2389/00C08J2405/08C08J2489/00
Inventor 邓慧阿依非热王晓宁郑智远王雪
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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