Preparation method and application of a molecularly imprinted composite membrane initiated by a surface functional monomer prepolymerization system

A molecular imprinting, functional monomer technology, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc., can solve problems such as large flow resistance, and achieve reduced non-specific adsorption, high adsorption selectivity, and fast adsorption kinetics The effect of academic nature

Active Publication Date: 2022-04-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, general conventional polymer particles such as SiO 2 The main problem of the blended separation membrane is the large flow resistance

Method used

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  • Preparation method and application of a molecularly imprinted composite membrane initiated by a surface functional monomer prepolymerization system
  • Preparation method and application of a molecularly imprinted composite membrane initiated by a surface functional monomer prepolymerization system
  • Preparation method and application of a molecularly imprinted composite membrane initiated by a surface functional monomer prepolymerization system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) Synthesis of 2-methacrylamide glutamic acid (MAGA);

[0058] First, add 5.0 g of glutamic acid and 0.2 g of hydroquinone to 100 mL of dichloromethane, and store at 0°C; then add nitrogen, add 13.0 g of triethylamine and 4.0 mL of methacryloyl chloride, and stir magnetically at room temperature for 2 h; After the end, add 1.3g NaOH, and evaporate the water phase in the solution through a rotary evaporator; put the residue in a vacuum oven at 60°C for 24 hours; obtain a dry product, which is MAGA; dissolve 10g of MAGA in 40mL of ethanol , stored for later use;

[0059] (2) Preparation of poly(HEMA-MAGA) particles;

[0060] Mix 0.5g of benzoyl peroxide, 0.5g of polypropylene alcohol, 10mL of hydroxyethyl methacrylate (HEMA) and 0.5g of MAGA for copolymerization reaction. The temperature of the copolymerization reaction is 40°C and the reaction time is 24h ; After the reaction, filter and wash, dry in a vacuum oven, and grind after drying to obtain poly(HEMA-MAGA) par...

Embodiment 2

[0078] (1) Synthesis of 2-methacrylamide glutamic acid (MAGA);

[0079]First, add 5.0 g of glutamic acid and 0.2 g of hydroquinone to 100 mL of dichloromethane, and store at 0°C. Then nitrogen was added, 13.0 g of triethylamine and 4.0 mL of methacryloyl chloride were added, and magnetically stirred at room temperature for 2 h. After the reaction was completed, 1.3 g of NaOH was added, and the water phase in the solution was evaporated by a rotary evaporator. The residue was placed in a vacuum oven at 60°C for 36 hours. 10 g of MAGA was then dissolved in 40 mL of ethanol and stored for later use;

[0080] (2) Preparation of poly(HEMA-MAGA) particles;

[0081] Mix 0.5g of benzoyl peroxide, 0.5g of polypropylene alcohol, 10mL of hydroxyethyl methacrylate (HEMA) and 0.5g of MAGA for copolymerization reaction. The temperature of the copolymerization reaction is 40°C and the reaction time is 24h ; After the reaction, filter and wash, dry in a vacuum oven, and grind after drying...

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Abstract

The invention belongs to the technical field of material preparation, and relates to a preparation method and application of a molecularly imprinted composite membrane initiated by a surface functional monomer prepolymerization system; ); then the preparation of poly(HEMA-MAGA) particle-doped PVDF nanocomposite membranes (PPMs) was prepared by latex blending method, and then the surface of γ-methacryloxypropyl trimethoxysilane (KH-570) was used Modified PPMs; Finally, the ATRP method is used to realize the preparation of TC-molecularly imprinted composite membranes; in the present invention, since the imprinted polymerization occurs on the surface of the multilayer nanocomposite membrane material modified by functional monomers, it avoids partial template molecules due to embedding. For the problem of being too deep to be eluted, the obtained imprinted membrane is resistant to high temperature, the recognition point is not easy to be damaged, and the non-specific adsorption is reduced by 70%, which has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and relates to a preparation method and application of a molecularly imprinted composite membrane initiated by a surface functional monomer prepolymerization system. Background technique [0002] With the continuous development of separation and purification technology, membrane technology has become the research object of many workers as a simple, low-cost and high-efficiency method. However, conventional separation membranes are difficult to solve many technical problems, such as selective separation, specific recognition, and separation ability. In recent years, the application of membrane-specific recognition and separation technology has not only greatly helped the development of biological sciences, but also greatly helped the development of life sciences. Therefore, it is very necessary to develop membranes with specific recognition ability and specific selectivity. As a sim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/16C08J7/12C08J9/26C08L27/16C08L33/24B01J20/26B01J20/28B01J20/30
CPCC08J7/16C08J7/12C08J9/26B01J20/268B01J20/28033C08J2327/16C08J2333/24C08J2435/02C08J2201/0424
Inventor 孙乾于超卢健闫永胜李春香
Owner JIANGSU UNIV
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