Preparation method and application of dendrimer macromolecule-modified polymer with reversed phase/strong anion exchange mixed mode

A technology of dendritic macromolecules and strong anions, applied in the direction of anion exchanger materials, anion exchange, inorganic anion exchangers, etc., to achieve the effect of uniform particle size, high yield and abundant active sites

Active Publication Date: 2019-06-07
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports of PAMAM dendrimer-modified reversed-phase/strong anion-exchange mixed-mode poly

Method used

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  • Preparation method and application of dendrimer macromolecule-modified polymer with reversed phase/strong anion exchange mixed mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of polymer microspheres

[0036] Prepare a solution by dissolving 30 mmol (4.10 mL) of glycidyl methacrylate (GMA), 20 mmol (2.85 mL) of divinylbenzene, and 60 mg of azobisisobutyronitrile into a porogen solution containing 6.87 g of toluene A, the solution was placed in an ice bath, ultrasonically degassed for 10 minutes, and then nitrogen gas was passed through solution A for 15 minutes to remove oxygen molecules. 80mg of nano-SiO with a particle size of 12nm 2 Disperse into 10mL of TritonX-100 aqueous solution with a mass concentration of 0.02%, sonicate for 10min to make nano-SiO 2 Disperse, then add 3mL of solution A, stir with a homogenizer at 6000rpm / min for 1min, then pass nitrogen gas for 3min to remove the air above the system, seal it, and polymerize the obtained Pickering emulsion at 60°C for 24h. Suction filter after the reaction, then pass through 400-mesh and 230-mesh stainless steel sieves, and settle twice with acetone, each time for 1...

Embodiment 2

[0038] Dissolve 30 mmol (4.10 mL) of glycidyl methacrylate (GMA), 20 mmol (2.85 mL) of divinylbenzene, and 60 mg of azobisisobutyronitrile in a solution containing toluene / 1-dodecanol (9 / 1, w / w) (6.87g) of the porogen solution, prepared into solution A, the solution was placed in an ice bath, ultrasonic degassed for 10 minutes, and then passed nitrogen into solution A for 15 minutes to remove oxygen molecules. 80mg of nano-SiO with a particle size of 12nm 2 Disperse into 10mL TritonX-100 aqueous solution with a mass concentration of 0.02%, and ultrasonicate for 5min to make nano-SiO 2 Disperse, then add 3mL of solution A, stir with a homogenizer at 6000rpm / min for 1min, then pass nitrogen gas for 3min to remove the air above the system, seal it, and polymerize the obtained Pickering emulsion at 60°C for 24h. Suction filter after the reaction, then pass through 400-mesh and 230-mesh stainless steel sieves, and settle twice with acetone, each time for 10 minutes, to obtain pol...

Embodiment 3

[0040] Dissolve 30 mmol (4.10 mL) of glycidyl methacrylate (GMA), 20 mmol (2.85 mL) of divinylbenzene, and 60 mg of azobisisobutyronitrile in a solution containing toluene / 1-dodecanol (7 / 3, w / w) (6.87g) of the porogen solution, prepared into solution A, the solution was placed in an ice bath, ultrasonic degassed for 10 minutes, and then passed nitrogen into solution A for 15 minutes to remove oxygen molecules. 80mg of nano-SiO with a particle size of 12nm 2 Disperse into 10mL TritonX-100 aqueous solution with a mass concentration of 0.02%, and ultrasonicate for 5min to make nano-SiO 2 Disperse, then add 3mL of solution A, stir with a homogenizer at 6000rpm / min for 1min, then pass nitrogen gas for 3min to remove the air above the system, seal it, and polymerize the obtained Pickering emulsion at 60°C for 24h. Suction filter after the reaction, then pass through 400-mesh and 230-mesh stainless steel sieves, and settle twice with acetone, each time for 10 minutes, to obtain pol...

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Abstract

The invention provides a preparation method and application of a dendrimer macromolecule-modified adsorbent with a reversed phase/strong anion exchange mixed mode. The preparation method specificallycomprises the following steps: dissolving a cross-linking agent, a functional monomer and an initiator in a pore-foaming agent, introducing nitrogen to remove oxygen to prepare a solution A, dispersing nano-SiO2 into a triton X-100 water solution to obtain a solution B, mixing the solution A with the solution B, carrying out dispersing by a pulp refiner, carrying out polymerizing at a temperatureof 60 DEG C, carrying out an epoxy-amine ring opening reaction on the obtained polymer with a surface wrapped by SiO2 with ethylenediamine at a temperature of 80 DEG C to obtain a polymer with amino,soaking the polymer by using hydrofluoric acid to remove the SiO2 to obtain G0-poly(glyceryl methacrylate) (G0-PGMA), then carrying out a two-step reaction to modify the surface of the G0-PGMA with dendrimer polyamide-amine (PAMAM), and finally carrying out a reaction with a substance with epoxy to obtain the dendrimer macromolecule-modified adsorbent with the reversed phase/strong anion exchangemixed mode.

Description

technical field [0001] The invention belongs to the field of environmental monitoring and new materials, and in particular relates to the preparation and application of a dendrimer-modified reversed-phase / strong anion-exchange mixed-mode polymer with ultra-high selectivity enrichment and purification of weakly acidic compounds. Background technique [0002] Sample preparation is an important step in the analysis process. Biological samples (such as blood, serum, and urine), environmental samples, and food samples have complex components, and the content of target analytes is very low (ng / mL–μg / mL). Even with high-resolution analytical instruments, almost all samples cannot be analyzed directly. Therefore, the enrichment and purification of samples are crucial in the process of sample analysis. Commonly used sample pretreatment techniques include liquid-liquid extraction, solid-phase extraction, and pressurized solvent extraction. Solid phase extraction is currently the mo...

Claims

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Application Information

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IPC IPC(8): C08G83/00C02F1/26B01D15/08B01D15/36
Inventor 陈吉平黄超囡李云彭俊钰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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