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Preparation method of molecular imprinting adsorption material for kaempferide on surface of cotton bast

A technology of molecular imprinting and adsorption materials, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of destroying imprinted points, poor controllability, waste of resources, etc., and achieve the goal of increasing income, low production cost, and strong adsorption capacity Effect

Inactive Publication Date: 2017-07-21
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device required by this method is simple and universal, but there are usually the following problems: (1) The controllability is poor during the grinding process, and some irregular particles are inevitably generated, and some imprinted spots are destroyed at the same time
The output is high, but most of them are discarded, resulting in a waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of surface-modified cotton stalk skin: In the reactor, add ethanol: 76 mL, γ-methacryloxypropyl trimethoxysilane: 28 g, oxidized cotton stalk skin: 12 g, at 60 Constant temperature at ±2°C, stirring, and reflux reaction for 9 hours. After the reaction, wash with ethanol, take it out, and dry it in a vacuum oven to obtain surface-modified cotton stalk skins;

[0021] (2) Preparation of kaempferol molecularly imprinted adsorption material on the surface of cotton stalk bark: In the reactor, add ethanol: 70 mL, ethylene glycol dimethacrylate: 10 g, 4-vinylpyridine: 6 g, kaempferol: 6 g , surface modified cotton stalk skin: 22g, azobisisobutyronitrile: 2.0g, stir to dissolve, pass inert gas to remove oxygen for 10min, anaerobic atmosphere, stir and react at 68±2°C for 13h, and mix the obtained product with methanol: acetic acid Soak in the mixed solution with a volume ratio of 6:1 for 20 hours, remove template molecules, and dry to obtain the kaempferol mole...

Embodiment 2

[0023] (1) Preparation of surface-modified cotton stalk husk: In the reactor, add ethanol: 70 mL, γ-methacryloxypropyltrimethoxysilane: 27 g, oxidized cotton stalk husk: 18 g, at 60 Constant temperature at ±2°C, stirring, and reflux reaction for 8 hours. After the reaction, wash with ethanol, take it out, and dry it in a vacuum oven to obtain surface-modified cotton stalk skins;

[0024] (2) Preparation of kaempferol molecularly imprinted adsorption material on the surface of cotton stalk bark: In the reactor, add ethanol: 63 mL, ethylene glycol dimethacrylate: 14 g, 4-vinylpyridine: 8 g, kaempferol: 8 g , surface modified cotton stalk skin: 18g, azobisisobutyronitrile: 1.0g, stir to dissolve, pass inert gas to remove oxygen for 10min, anaerobic atmosphere, stir and react at 68±2°C for 14h, and mix the obtained product with methanol: acetic acid Soak in the mixed solution with a volume ratio of 6:1 for 20 hours, remove template molecules, and dry to obtain the kaempferol molec...

Embodiment 3

[0026] (1) Preparation of surface-modified cotton stalk husk: In the reactor, add ethanol: 78 mL, γ-methacryloxypropyltrimethoxysilane: 25 g, oxidized cotton stalk husk: 13 g, at 60 Constant temperature at ±2°C, stirring, and reflux reaction for 10 h. After the reaction, wash with ethanol, take it out, and dry it in a vacuum drying oven to obtain surface-modified cotton stalk skins;

[0027](2) Preparation of kaempferol molecularly imprinted adsorption material on the surface of cotton stalk bark: In the reactor, add ethanol: 76 mL, ethylene glycol dimethacrylate: 8 g, 4-vinylpyridine: 4 g, kaempferol: 5 g , surface modified cotton stalk skin: 20g, azobisisobutyronitrile: 3.0g, stir to dissolve, pass inert gas to remove oxygen for 10min, anaerobic atmosphere, stir and react at 68±2°C for 12h, and mix the obtained product with methanol: acetic acid Soak in the mixed solution with a volume ratio of 6:1 for 20 hours, remove the template molecules, and dry to obtain the kaempferol...

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Abstract

The invention discloses a preparation method of a molecular imprinting adsorption material for kaempferide on the surface of cotton bast. The preparation method is characterized by comprising the following steps: modifying the surface of the cotton bast through gamma-trimethoxysilyl propyl methacrylate, thus obtaining surface-modified cotton bast; adding 50 to 60 percent of ethyl alcohol, 8 to 14 percent of ethylene glycol dimethacrylate, 4 to 8 percent of 4-vinyl pyridine, 3.0 to 8.0 percent of the kaempferide, 15 to 22 percent of the surface-modified cotton bast and 1.0 to 3.0 percent of azodiisobutyronitrile into a reactor, stirring and dissolving the components, feeding an inert anaerobic atmosphere, performing stirring reaction, and removing template modules with a methyl alcohol and acetic acid mixing solution, thus obtaining the molecular imprinting adsorption material for the kaempferide on the surface of the cotton bast. The adsorption material has specific identification capacity for the kaempferide, is relatively high in selectivity, high in mechanical property, extremely high in chemical stability, high in adsorption speed, easy to elute, biodegradable and simple in process, and has the advantages of regeneration capacity, environment friendliness and the like.

Description

technical field [0001] The invention relates to a preparation method and application technology of a molecularly imprinted adsorption material, in particular to a preparation method of a kaempferol molecularly imprinted adsorption material on the surface of cotton stalks, and belongs to the technical field of separation material applications. Background technique [0002] Kaempferol (scientific name is 3,5,7-trihydroxy-4'-methoxyflavone) whose molecular formula is C 16 h 12 o 6 , with a relative molecular mass of 300.26, is a bioflavonoid with a special molecular structure and has a variety of pharmacological activities. Kaempferol is yellow crystalline powder, slightly soluble in water, soluble in hot ethanol, ether and alkali. Kaempferol can activate the activity of melanocyte tyrosinase, promote the proliferation of melanocytes, and increase the synthesis of melanin. , anti-ulcer, choleretic diuretic, cough suppressant. Oxygen free radical toxicity is one of the impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30
CPCB01J20/268
Inventor 李慧芝翟玉博李晓峰
Owner UNIV OF JINAN
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