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Compound adsorbing material capable of selectively adsorbing tannins and preparation method thereof

A composite adsorption material and a selectable technology, which can be used in the preparation of sugar derivatives, chemical instruments and methods, and other chemical processes to achieve the effects of mild preparation conditions, readily available raw materials, and simple operation.

Inactive Publication Date: 2012-11-28
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no research report on the modification of collagen by using attapulgite to prepare composite materials at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The attapulgite suspension with a mass fraction of 5% was co-treated with ultrasonic stirring in a water bath at a temperature of 25°C for 1.5 h, then frozen at -20°C for 2.5 h, dried at 60°C for 10 h, and ground to obtain attapulgite nanopowder body. Then the above-mentioned attapulgite suspension and cationic surfactant aqueous solution with a mass fraction of 5% were reacted at 80°C for 1.5h, then taken out, and washed repeatedly until there was no Cl - , Dry at a temperature of 50°C for 6 h to constant weight to obtain organic attapulgite. Weigh 1 part skin powder collagen and add it to 13 parts water, add 2% NaCl, 2 parts 1% v / v formic acid, sonicate at 5°C for 30 min, then add 2% organic attapulgite / 5 parts water The skin powder collagen suspension was adjusted to pH 4.9, shaken and mixed in a water bath at 10°C for 4 hours, then frozen at -20°C for 2 hours, and freeze-dried to obtain a composite adsorption material.

Embodiment 2

[0024] The attapulgite suspension with a mass fraction of 8% was co-treated with ultrasonic stirring in a water bath environment at a temperature of 30 °C for 2 h, then frozen at -18 °C for 3 h, dried at 50 °C for 10 h, and ground to obtain attapulgite nanopowder body. Then, the above-mentioned attapulgite suspension and cationic surfactant aqueous solution with a mass fraction of 8% were reacted at 60°C for 2h, then taken out, and washed repeatedly until no Cl - , Dry at 60°C for 7 h to constant weight to obtain organic attapulgite. Weigh 1 part skin powder collagen and add it to 13 parts water, add 3 % NaCl, 2 parts 2 % v / v formic acid, ultrasonicate at 15 °C for 30 min, then add 6 % organic attapulgite / 5 parts water The skin powder collagen suspension was adjusted to pH 4.0, shaken and mixed in a water bath at 15°C for 6 hours, then frozen at -15°C for 4 hours, and freeze-dried to obtain a composite adsorption material.

Embodiment 3

[0026] The attapulgite suspension with a mass fraction of 10% was co-treated with ultrasonic stirring in a water bath environment at a temperature of 35°C for 2.5 h, then frozen at -10°C for 4 h, dried at 70°C for 10 h, and ground to obtain attapulgite nanopowder body. Then the above-mentioned attapulgite suspension and cationic surfactant aqueous solution with a mass fraction of 10% were reacted at 80°C for 2.5h and then taken out, washed repeatedly until no Cl - , Dry at a temperature of 70°C for 7 h to constant weight to obtain organic attapulgite. Weigh 1 part skin powder collagen and add it to 13 parts water, add 2 % NaCl, 2 parts 3 % v / v formic acid, ultrasonicate at 20 °C for 30 min, then add 8 % organic attapulgite / 5 parts water The skin collagen suspension was adjusted to pH 5.5, shaken and mixed in a water bath at 25°C for 6 hours, then frozen at -18°C for 5 hours, and freeze-dried to obtain a composite adsorption material.

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Abstract

The invention discloses a compound adsorbing material capable of selectively adsorbing tannins and a preparation method thereof. The method comprises the following steps of: firstly, ultrasonically stirring and co-processing an attapulgite suspension with mass fraction of 1% to 15% in a water bath, freezing and thawing so that attapulgite crystal bundles are dissociated into attapulgite single crystal rods, and drying and grinding to obtain attapulgite nanopowders; then, modifying a suspension of the attapulgite nanopowders with a cationic surfactant to form organic attapulgite; and subsequently, mixing hide powder collagen and a suspension of the organic attapulgite, oscillating in a water bath from mixing thoroughly, and freeze-drying to constant weight, thus obtaining the compound adsorbing material. The material can selectively adsorb hydrolysable tannins with high efficiency. Since both the collagen and the attapulgite are environment-friendly, the collagen-attapulgite compound material has the advantages of environmental friendliness and has development potential.

Description

technical field [0001] The invention belongs to the field of preparation of polymer-based nano silicate composite adsorption materials, in particular to a composite adsorption material capable of selectively adsorbing tannins and a preparation method thereof. Background technique [0002] Tannin is a polyphenolic compound that widely exists in plants and has unique chemical properties and physiological activities. However, tannin also has certain toxic and side effects. Tannins are contained in 70% of Chinese herbal medicines. In addition to affecting the stability and clarity of the preparations, tannins in Chinese medicine preparations may also cause a series of serious physiological reactions: such as causing protein coagulation in the blood; forming drug properties with hemoglobin Precipitation; cause dizziness, nausea, diarrhea. Since tannins have similar molecular structures and almost the same physical and chemical properties as the active ingredients of many Chinese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C07H13/08C07H1/06
Inventor 林炜苏帝翰穆畅道
Owner SICHUAN UNIV
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