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Preparation method of intelligent micro-emulsion polymerization salicylic acid molecular imprinted membrane and application thereof

A technology of microemulsion polymerization and molecularly imprinted membrane, which is applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve problems such as inability to achieve single substance separation, efficient selective separation, etc., and achieve High imprinting efficiency, fast adsorption kinetics, good selectivity

Inactive Publication Date: 2013-12-11
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some factors that limit its development. For example, this type of hybrid membrane can only achieve the separation of a certain type of substance and cannot truly separate a single substance, especially for organic compounds with similar structures. Perform a single, efficient, selective separation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Mix 0.5 g of dodecyltrimethylammonium bromide (DTAB), 0.04 g of salicylic acid (SA), and 2.3 mL of methanol into 20 mL of deionized water.

[0042] (2) Mix 1 mL of styrene (St), 0.5 mL of 4-vinylpyridine (4-VP), 0.5 mL of divinylbenzene (DVB), and 0.087 g of N-isopropylacrylamide (NIPAM) into 5 mL of toluene.

[0043] (3) The mixed solution in step (2) is slowly added dropwise to the mixed solution added in the above-mentioned step (1) for 2 h to form a microemulsion, and then 0.032 g of potassium persulfate (KPS) is added to the above-mentioned emulsion .

[0044] (4) Take 15 g of the ceramic membrane and place it in 60 ml of 30% hydrogen peroxide solution, boil for 15 min, take it out and boil it in 60 ml of deionized water for 15 min, and finally 60 o C dried and stored under argon.

[0045] (5) Immerse 5 g of the activated ceramic membrane prepared in the above step (4) into a wide-mouth Erlenmeyer flask containing 10 ml of the microemulsion mixture in (3),...

Embodiment 2

[0052] (1) Mix 2.5 g of dodecyltrimethylammonium bromide (DTAB), 0.08 g of salicylic acid (SA), and 2.3 mL of methanol into 20 mL of deionized water.

[0053] (2) Mix 2 mL of styrene (St), 1 mL of 4-vinylpyridine (4-VP), 1 mL of divinylbenzene (DVB), and 0.0435 g of N-isopropylacrylamide (NIPAM) into 5 mL of toluene.

[0054] (3) The mixed solution in step (2) is slowly added dropwise to the mixed solution added in the above step (1) for 2 h to form a microemulsion, and then 0.064 g of potassium persulfate (KPS) is added to the above emulsion .

[0055] (4) Take 20 g of the ceramic membrane and place it in 80 ml of 30% hydrogen peroxide solution, boil it for 15 min, take it out and boil it in 60 ml of deionized water for 15 min, and finally 60 o C dried and stored under argon.

[0056] (5) Immerse 10 g of the activated ceramic membrane prepared in the above step (4) into a wide-mouthed Erlenmeyer flask containing 20 ml of the microemulsion mixture in (3), and seal it afte...

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Abstract

The invention discloses a preparation method of an intelligent micro-emulsion polymerization salicylic acid molecular imprinted membrane and an application thereof, belongs to the technical field of material preparation. The preparation method particularly refers to a new method for the preparation of the salicylic acid molecular imprinted membrane (MIM) by employing an oil-in-water micro-emulsion polymerization method and with a ceramic alumina membrane as a substrate, an impurity in aspirin-salicylic acid (SA) as a template molecule, 4-vinyl pyridine (4-VP) as a functional monomer, N-isopropylacrylamide (NIPAM) as a temperature sensitive monomer, dodecyltrimethylammonium bromide (DTAB) as an emulsifying agent, toluene as an oil-phase dispersed phase, divinyl benzene (DVB) as a crosslinking agent, and potassium persulfate (KPS) as an initiator. Selective permeability experiments are used for studying selective recognition performance of the prepared molecular imprinted membrane. Results show that the salicylic acid molecular imprinted membrane obtained by the preparation method has excellent salicylic acid molecular recognition performance and intelligent release performance.

Description

technical field [0001] The invention belongs to the field of material preparation, and relates to a method for preparing an intelligent microemulsion polymerized salicylic acid molecularly imprinted film, in particular to a new method for preparing a molecularly imprinted film by using a microemulsion polymerization method. Background technique [0002] Aspirin, also known as acetylsalicylic acid, is an antipyretic and analgesic with a long history, used to treat colds, fever, headache, toothache, joint pain, rheumatism, and to prevent and treat ischemic heart disease, angina pectoris , cardiopulmonary infarction, and cerebral thrombosis are also effective in angioplasty and bypass grafting. Aspirin is usually obtained by esterification of salicylic acid and acetic anhydride. Therefore, the by-product salicylic acid is often produced in the product, and aspirin is easily hydrolyzed to produce salicylic acid during storage. Some data show that if the concentration of salicy...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F226/06C08F212/36C08F220/54C08F2/28C08J5/18C08J9/26B01J20/26B01J20/30B01D71/28
Inventor 孟敏佳戴江栋刘燕潘建明于萍高林闫永胜
Owner JIANGSU UNIV
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