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Amino acid grafted glycidyl methacrylate (GMA)-divinyl benzene (DVB) copolymer chelate resin and preparation method and application

A technology of branching methacrylic acid and glycidyl ester, which is applied in the field of preparation of amino acid grafted GMA-DVB copolymer chelating resin, to achieve the effect of easy solid-liquid separation and easy separation

Inactive Publication Date: 2016-08-03
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the design and synthesis of porous chelating resin microspheres with high adsorption capacity using GMA-DVB copolymer as the backbone and using non-toxic and harmless amino acids to carry out surface graft modification.

Method used

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  • Amino acid grafted glycidyl methacrylate (GMA)-divinyl benzene (DVB) copolymer chelate resin and preparation method and application
  • Amino acid grafted glycidyl methacrylate (GMA)-divinyl benzene (DVB) copolymer chelate resin and preparation method and application
  • Amino acid grafted glycidyl methacrylate (GMA)-divinyl benzene (DVB) copolymer chelate resin and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0033] (1) Add 0.125-0.75g of polyvinyl alcohol into a beaker filled with 10-40ml of distilled water, first swell in cold water at 10-30°C for 1-5h, then raise the temperature to 80-100°C for 1-3h, until Presents a transparent solution (I).

[0034] (2) In a 100ml reactor equipped with a reflux condenser and a heating and stirring device, add an aqueous solution (I) of polyvinyl alcohol, 2 to 6ml of glycidyl methacrylate monomer and 0.11 to 1.26g of divinylbenzene, After stirring to fully disperse the two phases, heat to raise the temperature of the reaction system to 60-80°C, and pass N 2 30 minutes.

[0035] (3) Add 1 to 5 ml of the mixed porogen dissolved with the initiator azobisisobutyronitrile (accounting for 0.5 to 3% of the mass of glycidyl methacrylate monomer) into the reaction system while blowing nitrogen gas, and mix to form The volume ratio of toluene and n-heptane in the pore agent is 2:1~5:1, and the N 2 Stir and react at a constant temperature of 60-80°C fo...

specific Embodiment 2

[0039] Add 0.5g of polyvinyl alcohol into a beaker filled with 25ml of distilled water, swell in cold water at 25°C for 1 hour, then raise the temperature to 90°C to accelerate dissolution, and keep it warm for 2 hours until a transparent solution appears. Add the prepared polyvinyl alcohol aqueous solution, 3ml glycidyl methacrylate and 0.52ml divinylbenzene into a 100ml reactor equipped with a reflux condenser and a heating and stirring device, stir to fully disperse the two phases, and heat in an oil bath to make The temperature of the reaction system was raised to 70°C, and N 2 30 minutes. The mixed porogen toluene and n-heptane mixed solution of dissolving 0.032g initiator azobisisobutyronitrile are added in the reaction system while logical nitrogen (in the mixed porogen, v 甲苯 : v 正庚烷 =4:1, the mixed porogen dosage is 60% of the monomer mass). in N 2 Stir and react at a constant temperature of 70°C for 3 hours under protection. After the reaction is completed, heat u...

specific Embodiment 3

[0042] The reaction steps and conditions are the same as those in Example 2. The amino acid used is L-aspartic acid in an amount of 3.727 g, which is added to 10 ml of an aqueous solution containing 2.250 g of NaOH. Finally, the GMA-DVB chelating resin grafted with L-aspartic acid is obtained.

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Abstract

The invention discloses amino acid grafted GMA-DVB copolymer chelate resin and a preparation method and application. (1) GMA is used as a monomer, DVB is used a coupling agent, polyving akohol is used as a dispersing agent, azodiisobutyronitrile is used as an initiating agent, methylbenzene and n-heptane are used as a mixed pore-foaming agent, and GMA-DVB bipolymer crosslinked microspheres taking the GMA as the main monomer are prepared with a suspension polymerization method; (2) N,N-dimethyl formamide is taken as a swelling agent, amino acid is used for surface grafted modification of the GMA-DVB bipolymer crosslinked microspheres, and the amino acid grafted GMA-DVB copolymer chelate resin is obtained. The amino acid grafted GMA-DVB copolymer chelate resin and the preparation method and the application have the advantages that the synthesis process is simple, the preparation cost is low, the toxicity is small, the resin particle diameters are uniform, separation and recycling are easy, the resin can be reused for multiple times and the like.

Description

technical field [0001] The invention relates to amino acid grafted GMA-DVB copolymer chelating resin. The invention also relates to the preparation method and application of amino acid grafted GMA-DVB copolymer chelating resin. Background technique [0002] With the rapid development of social economy, the deterioration of the environment poses a serious threat to the sustainable development of our country's economy. Toxic metals discharged together with wastewater not only pollute the environment, but also pose a persistent threat to human safety. Therefore, separating these metal ions from wastewater and recovering metal ions to purify industrial wastewater is very important economically and to human health. It is imperative to develop methods and materials for recycling metal ions in wastewater with low cost and good performance. . [0003] Adsorption resin method is a relatively effective and commonly used treatment method for wastewater treatment, but the preparation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/32C08F212/36C08F2/20C08F8/32C08J9/28B01J20/26B01J20/30C02F1/28C02F101/20
CPCB01J20/267C02F1/285C02F2101/20C08F2/20C08F8/32C08F220/32C08F220/325C08J9/28C08J2201/0502C08J2351/06C08F212/36
Inventor 陈兴娟张绪丁桂云
Owner HARBIN ENG UNIV
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