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Preparation method of beta-cyclodextrin modified macroporous amino glucan adsorbent

A technology of aminodextran and pore amino group is applied in the field of preparation of biological adsorbents to achieve the effects of good adsorption selection, large adsorption capacity and fast adsorption speed.

Inactive Publication Date: 2015-12-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It not only has the advantages of good mechanical properties of inorganic materials, but also has all the advantages of organic materials. At present, there is no report on the preparation of adsorbent by β-cyclodextrin modified macroporous aminodextran gel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Water phase A: In the reactor, prepare an aqueous solution with a mass percentage of 45% aminodextran to obtain water phase A;

[0025] (2) Organic phase B: In the reactor, add ethyl acetate: 86 mL, bisphenol A diglycidyl ether: 15 g, and Span 80: 8 g, stir and uniformly to obtain organic phase B;

[0026] (3) Preparation of macroporous aminodextran gel: in the reactor, add organic phase B: 60mL, the temperature rises to 65±3℃ constant temperature, stir, add water phase A: 32mL, stir evenly, add 50% by mass NaOH: 8mL, stirred and refluxed for 3.5h, washed thoroughly with distilled water until neutral, filtered, placed in a plastic container and placed in a freeze-drying box, freeze-dried for 24h, ground and sieved to obtain Macroporous aminodextran gel;

[0027] (4) Preparation of β-cyclodextrin modified macroporous aminodextrin adsorbent: In the reactor, add separately, N,N-dimethylformamide: 58mL, β-cyclodextrin: 14g, stir to dissolve Then, add macroporous aminodextran...

Embodiment 2

[0029] (1) Water phase A: In the reactor, prepare an aqueous solution with a mass percentage of 40% aminodextran to obtain water phase A;

[0030] (2) Organic phase B: In the reactor, add ethyl acetate: 89mL, bisphenol A diglycidyl ether: 10g, and Span 80: 10g, stir and uniformly, to obtain organic phase B;

[0031] (3) Preparation of macroporous aminodextran gel: in the reactor, add organic phase B: 65mL, the temperature rises to 65±3℃ constant temperature, stir, add water phase A: 30mL, stir evenly, add 50% by mass NaOH: 5mL, stir and reflux for 3h, wash thoroughly with distilled water to neutrality, filter, place in a plastic container and put in a freeze-drying box, freeze-dry for 24h, grind and sieve to obtain Pore ​​aminodextran gel;

[0032] (4) Preparation of β-cyclodextrin modified macroporous aminodextran adsorbent: In the reactor, add N,N-dimethylformamide: 63mL, β-cyclodextrin: 10g, stir to dissolve Then, add macroporous aminodextran gel: 22g, warm to 55±2℃ constant tem...

Embodiment 3

[0034] (1) Water phase A: In the reactor, prepare an aqueous solution with a mass percentage of 50% aminodextran to obtain water phase A;

[0035] (2) Organic phase B: In the reactor, add ethyl acetate: 84 mL, bisphenol A diglycidyl ether: 20 g, and Span 80: 5 g, stir and uniformly to obtain organic phase B;

[0036] (3) Preparation of macroporous aminodextran gel: In the reactor, add the organic phase B: 55mL, the temperature rises to 65±3℃ constant temperature, stir, add the water phase A: 38mL, stir evenly, add NaOH with a mass percentage concentration of 50%: 7mL, stir and reflux for 4h, wash thoroughly with distilled water to neutrality, filter, put it in a plastic container and put it in a freeze-drying box, freeze-dry for 24h, grind and sieve to obtain Pore ​​aminodextran gel;

[0037] (4) Preparation of β-cyclodextrin modified macroporous aminodextran adsorbent: In the reactor, respectively add, N,N-dimethylformamide: 53mL, β-cyclodextrin: 18g, stir to dissolve Then, add ma...

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Abstract

The invention discloses a preparation method of a beta-cyclodextrin modified macroporous amino glucan adsorbent. The preparation method is characterized by comprising the steps that, by mass, 50-60% of N,N-dimethylformamide and 10-18% of beta-cyclodextrin are added and are stirred and dissolved, then 15-22% of macroporous amino glucan gel is added, the temperature is increased to 55+ / -2 DEG C, the constant temperature is kept, stirring is carried out, a backflow reaction is carried out for 30-40 min, 5-12% of 1,6-hexamethylene diisocyanate is dropwise added, even stirring is carried out, a constant-temperature reaction is carried out at the temperature of 55+ / -2 DEG C for 4-6 h, the sum of the percentages of all the components is 100%, the mixture is washed with ethyl alcohol after the reaction is finished and taken out to be dried in a vacuum drying box, and therefore the beta-cyclodextrin modified macroporous amino glucan adsorbent is obtained. The beta-cyclodextrin modified macroporous amino glucan adsorbent has the high adsorption capacity for bisphenol A, can be repeatedly used, and is low in cost, environmentally friendly and biodegradable.

Description

Technical field [0001] The invention relates to the technical field of a preparation method of a biological adsorbent, in particular to a preparation method of a β-cyclodextrin modified macroporous aminodextran adsorbent and an application technology for bisphenol A (BPA) adsorption. Background technique [0002] β-Cyclodextrin is a series of cyclic oligosaccharides bonded with α-1,4-glycosides. It has a truncated cone-shaped rosette structure. It has internal hydrophobicity and external hydrophilicity, and can be used to package molecules of appropriate size. Pick up. This special property makes it widely used in drug carriers, chiral recognition, chemical separation, electrochemical sensing, etc. In recent years, many scholars have begun to pay attention to the application of β-cyclodextrin and its derivatives in the environmental field. Sun Linlin et al. studied the adsorption performance of carboxymethyl-β-cyclodextrin functionalized ferroferric oxide magnetic nanocomposite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30
Inventor 李慧芝周英杰潘金营赵长征
Owner UNIV OF JINAN
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