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Preparation method and application of macroporous polyacryamide resin

A polyacrylamide and acrylamide technology, applied in the field of materials, can solve the problems of uncontrollable pore size of resin, not very good effect, and not easy to wash out, etc., and achieves uniform and dense pore size, simple preparation method, water absorption and adsorption. strong effect

Inactive Publication Date: 2010-12-01
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Porogens are divided into inorganic porogens and organic porogens. Inorganic porogens include NaCl, Na 2 CO 3 Mixed porogen with HCl, NaHCO 3 Mixed porogens with HCl, etc., although these inorganic compounds can cause pores, the pore size of the prepared resin cannot be controlled, the size is uneven, and the pores are not elastic, so the effect is not very good
In order to obtain a porous structure, organic solvents that do not have double bonds, do not participate in copolymerization, and can condense with monomers to swell or precipitate the copolymer are added to the polymerization, such as gasoline, benzene, aliphatic hydrocarbons, paraffin, etc. as pore-forming agent, but it is not easy to wash out completely, and the pore size is larger

Method used

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  • Preparation method and application of macroporous polyacryamide resin
  • Preparation method and application of macroporous polyacryamide resin
  • Preparation method and application of macroporous polyacryamide resin

Examples

Experimental program
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Effect test

Embodiment 1

[0036] 1. Prepare the water phase

[0037] Add 5.0 g of acrylamide, 0.50 g of ammonium persulfate, and 1.0 g of N,N'-methylenebisacrylamide to 30g of deionized water. Acrylamide and ammonium persulfate, N,N'-methylenebisacrylamide, The mass ratio of deionized water was 1:0.1:0.2:6, and the mixture was stirred until the solid was completely dissolved, and 36.5 g of the water phase was prepared.

[0038] 2. Preparation of oil phase

[0039] Place 90g of cyclohexane in a 250mL three-necked flask equipped with a stirrer, add 0.1g of Span-60, 0.5g of Span-80, and the mass ratio of Span-60 to Span-80 and cyclohexane is 1 : 5:900, stir at room temperature until Span-60 and Span-80 are fully dissolved, and prepare 90.6 g of oil phase.

[0040] 3. Preparation of macroporous polyacrylamide resin

[0041] Add 2 g of N,N' dimethylformamide to the 36g aqueous phase, mix well, the mass ratio of N,N' dimethylformamide to the aqueous phase is 1:18, under nitrogen protection, drip with cons...

Embodiment 2

[0056] In step 1 of preparing the water phase in this example, 5.0 g of acrylamide, 0.30 g of ammonium persulfate, 0.5 g of N,N'-methylenebisacrylamide were added to 15 g of deionized water, acrylamide and ammonium persulfate, The mass ratio of N,N'-methylenebisacrylamide and deionized water was 1:0.06:0.1:3, and the mixture was stirred until the solid was completely dissolved, and 20.8 g of the water phase was prepared. In step 3 of preparing macroporous polyacrylamide resin, add 2.0 g of N,N'-dimethylformamide to 20 g of water phase, mix well, and the mass ratio of N,N'-dimethylformamide to water phase Under nitrogen protection, the mixture of N,N'-dimethylformamide and aqueous phase was added dropwise with a constant pressure dropping funnel at a rate of 10 drops / min, and the stirring speed was 250 rpm. In the 40 g oil phase of , the mass ratio of the water phase to the oil phase was 1:2, the temperature was raised to 70° C., and the reaction was performed at a constant tem...

Embodiment 3

[0058] In step 1 of preparing the water phase in this example, 5.0 g of acrylamide, 0.8 g of ammonium persulfate, 2.0 g of N,N'-methylenebisacrylamide were added to 35 g of deionized water, acrylamide and ammonium persulfate, The mass ratio of N,N'-methylenebisacrylamide and deionized water was 1:0.16:0.4:7, and the mixture was stirred until the solid was completely dissolved, and 42.8 g of the water phase was prepared. In step 3 of preparing macroporous polyacrylamide resin, add 1.0 g of N,N'-dimethylformamide to 40 g of water phase, mix well, and the mass ratio of N,N'-dimethylformamide to water phase Under the protection of nitrogen, the mixture of N,N'-dimethylformamide and aqueous phase was added dropwise with a constant pressure dropping funnel at a dropping rate of 10 drops / min, and the stirring speed was 250 rpm. In the 160 g oil phase of 1, the mass ratio of the water phase to the oil phase is 1:4, the temperature is raised to 70° C., and the reaction is performed at ...

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Abstract

The invention relates to a preparation method of macroporous polyacryamide resin. The method comprises the following steps of: preparing an aqueous phase, preparing an oil phase, preparing the macroporous polyacryamide resin and carrying out after-treatment on products. The preparation method of the macroporous polyacryamide resin has simplicity and low reaction temperature, and the prepared macroporous polyacryamide resin has macroporous structure from the surface to the interior, uniform and dense aperture, relatively larger specific surface area and strong water absorbability and adsorbability, can be used as a carrier of an immobilized enzyme and can greatly improve the capacity of the enzyme.

Description

technical field [0001] The invention belongs to the technical field of materials, and specifically relates to a macroporous polyacrylamide resin and its application. Background technique [0002] Immobilized enzyme carriers have developed rapidly, and many new materials have emerged in recent years. Compared with traditional immobilized enzyme carriers, macroporous amine-based resins have outstanding advantages such as large exchange capacity (large number of amine groups, large adsorption capacity), good selectivity, high resistance to organic pollution, and long service life. , The synthetic macroporous amine-based resin has broad application prospects in the field of immobilized enzymes. [0003] In the process of synthesizing macroporous amine-based resin, the choice of porogen is particularly important. Porosogens are divided into inorganic porogens and organic porogens. Inorganic porogens include NaCl, Na 2 CO 3 Mixed porogen with HCl, NaHCO 3 Mixed porogens with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08J9/28C12N11/08
Inventor 雷忠利姜琴杨红闫秀丽
Owner SHAANXI NORMAL UNIV
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