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Preparation method for molecularly imprinted composite membrane initiated by surface functional prepolymerization system

A technology of molecular imprinting and composite membranes, which is applied in the direction of chemical instruments and methods, ion exchange, alkali metal compounds, etc., to achieve fast adsorption kinetic properties, not easy to damage, and many times of repeated use

Inactive Publication Date: 2015-06-17
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The extraction and separation methods of artemisinin are mainly steam distillation, organic solvent extraction, Soxhlet extraction, ultrasonic extraction, microwave-assisted extraction, supercritical fluid extraction, and the method of separation and purification of artemisinin by molecular imprinted composite membrane is rarely reported

Method used

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  • Preparation method for molecularly imprinted composite membrane initiated by surface functional prepolymerization system
  • Preparation method for molecularly imprinted composite membrane initiated by surface functional prepolymerization system
  • Preparation method for molecularly imprinted composite membrane initiated by surface functional prepolymerization system

Examples

Experimental program
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Effect test

Embodiment 1

[0049] (1) Functional modification of regenerated cellulose membrane surface

[0050] First, 1.5 mL of 3-aminopropyltriethoxysilane (APTES) and 1 piece of regenerated cellulose membrane were placed in 50 mL of anhydrous toluene solution, mixed thoroughly under ultrasonic conditions, and 0.2 mL triethylamine is used as catalyst and is added in the above-mentioned solution, seals reaction flask mouth with parafilm, 50 o The reaction was heated at C for 12 h, and the obtained product (APTES-RCMs) was vacuum-dried to constant weight. Then, 0.5 mL of acryloyl chloride (AC) and the prepared 1 piece of APTES-RCMs were dissolved in 50 mL of anhydrous toluene, and after passing nitrogen for 30 min, 10 mg of anhydrous potassium carbonate was added to the above solution as a catalyst, Seal the mouth of the reaction flask with parafilm, react at room temperature for 10 hours, and finally vacuum-dry the obtained product (AM-APTES-RCMs) to constant weight.

[0051] (2) Synthesis of artemi...

Embodiment 2

[0064] (1) Functional modification of regenerated cellulose membrane surface

[0065] First, put 4.5 mL of 3-aminopropyltriethoxysilane (APTES) and 3 pieces of regenerated cellulose membranes in 50 mL of anhydrous toluene solution, mix thoroughly under ultrasonic conditions, and pass nitrogen for 30 minutes, then add 0.2 mL triethylamine is used as catalyst and is added in the above-mentioned solution, seals reaction flask mouth with parafilm, 50 o The reaction was heated at C for 12 h, and the obtained product (APTES-RCMs) was vacuum-dried to constant weight. Then, 1.5 mL of acryloyl chloride (AC) and the prepared 3 pieces of APTES-RCMs were dissolved in 50 mL of anhydrous toluene, and after passing nitrogen for 30 min, 10 mg of anhydrous potassium carbonate was added to the above solution as a catalyst, Seal the mouth of the reaction flask with parafilm, react at room temperature for 10 hours, and finally vacuum-dry the obtained product (AM-APTES-RCMs) to constant weight. ...

Embodiment 3

[0079] (1) Functional modification of regenerated cellulose membrane surface

[0080]First, put 6 mL of 3-aminopropyltriethoxysilane (APTES) and 4 pieces of regenerated cellulose membranes into 50 mL of anhydrous toluene solution, and mix thoroughly under ultrasonic conditions. After 30 minutes of nitrogen, 0.2 mL triethylamine is used as catalyst and is added in the above-mentioned solution, seals reaction flask mouth with parafilm, 50 o The reaction was heated at C for 12 h, and the obtained product (APTES-RCMs) was vacuum-dried to constant weight. Then, 2 mL of acryloyl chloride (AC) and the prepared 4 pieces of APTES-RCMs were dissolved in 50 mL of anhydrous toluene, and after passing through nitrogen for 30 minutes, 10 mg of anhydrous potassium carbonate was added to the above solution as a catalyst, and the The mouth of the reaction flask was sealed with parafilm, and the reaction was carried out at room temperature for 10 hours. Finally, the obtained product (AM-APTES-...

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Abstract

The invention relates to a preparation method for and application of a molecularly imprinted composite membrane initiated by a surface functional monomer prepolymerization system, belonging to the technical field of material preparation. According to the invention, a regenerated cellulose membrane is used as a substrate material, artemisinin is used as a template molecule, acrylamide is used as a functional monomer, and ethylene glycol dimethacrylate is used as a cross-linking agent; and through combined usage of an imprinting prepolymerization system, the surface artemisinin molecularly imprinted composite membrane is prepared on the surface of the regenerated cellulose membrane modified by the surface functional monomer by using two-step polymerization. Static adsorption experiments are conducted to research adsorption equilibrium, kinetic performance, selective recognition performance and selective permeation performance of the prepared molecularly imprinted composite membrane. Experiment results show that the artemisinin molecularly imprinted composite membrane prepared in the invention has high adsorption capability and superior artemisinin molecule recognition and permeation performance.

Description

technical field [0001] The invention relates to a preparation method of a molecularly imprinted composite membrane initiated by a surface functional prepolymerization system, in particular to a preparation method and application of a molecularly imprinted composite membrane initiated by a surface functional monomer prepolymerization system, and belongs to the technical field of material preparation. Background technique [0002] Since the creation of Molecular Imprinting Technology (MIT), it has attracted great interest from scientists and engineers in the fields of materials science, biochemistry and chemical engineering. This technology has the following three characteristics: ( ) High selectivity, high adsorption similar to natural receptors; ( ) Superior stability compared to natural molecules; ( ) The preparation process is simple and easy and widely applicable. MIT is a technology that simulates the molecular recognition in nature, such as: enzymes and substrates...

Claims

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Application Information

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IPC IPC(8): C08J9/26C08J7/16C08L1/02B01J20/26B01J20/28B01D15/08
Inventor 吴易霖李春香严铭闫永胜吕鹏刘馨琳
Owner JIANGSU UNIV
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