Synthesis of ion imprinted polymer particle

A technology of ion imprinting and polymers, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of uncommonly used separation and connection of inorganic ions, and separation not involved

Inactive Publication Date: 2009-04-29
COUNCIL OF SCI & IND RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the preparation of ionically imprinted polymer particles is not commonly used to separate closely related inorganic ions
Only in US Pat. No. 6,251,280; 2001, Dai et al. addressed this issue, but in a general way and did not deal with the separation of Erbium from the closely associated Lanthanum

Method used

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  • Synthesis of ion imprinted polymer particle
  • Synthesis of ion imprinted polymer particle
  • Synthesis of ion imprinted polymer particle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Example 1: γ-radiation polymerization

[0062] In a 50 ml round bottom flask, 1.0 mM erbium chloride (0.44 g), 3.0 mM DCQ (0.64 g) and 2 mM VP (0.21 g) were added and dissolved in 5 or 10 ml 2-methoxyethanol under stirring. Add 4 (0.4g) or 8 (0.8g) and 12 (1.2g) mM MMA and 16 (3.17g) or 32 (6.34g) and 48 (9.52g) mM EGDMA and stir until a homogeneous solution is obtained. Transfer the monomer mixture to a test tube, cool to 0°C, use N 2 Flush for 10 minutes and seal.

[0063] Application Co 60 Source, these solutions were irradiated for 4 hours under 1M Rad gamma radiation. The formed solid was washed with water and dried in an oven at 50°C. 5.70, 9.43 and 14.27g polymer materials with 4, 8 and 12mM functional monomers were obtained, respectively. The erbium ion-intercalated polymer was leached with 50% (v / v) HCl while stirring for 6 hours. After drying in an oven at 50°C, 4.14, 7.52 and 11.29g polymer materials with 4, 8 and 12mM functional monomers were obtained.

Embodiment 2

[0064] Example 2: Photochemical polymerization

[0065] In a 50 ml round bottom flask, 1.0 mM erbium chloride (0.44 g), 3.0 mM DCQ (0.64 g) and 2.0 mM VP (0.21 g) were added, and dissolved in 10 ml 2-methoxyethanol under stirring. Add 8mM MMA (0.8g), 32mM EGDMA (6.35g) and 50mg AIBN and stir until a homogeneous solution is obtained. Transfer the monomer mixture to a test tube, cool to 0°C, use N 2 Flush for 10 minutes and seal. These solutions were polymerized by UV radiation (300 nm) for 4, 8 and 16 hours. The solid formed was washed with water and dried in an oven at 50°C. 7.55, 9.85 and 9.95 g of polymer material were obtained with UV radiation (300 nm) for 4, 8 and 16 h. The erbium ion-intercalated polymer was leached with 50% (v / v) HCl while stirring for 6 hours. After drying in an oven at 50°C, 5.35, 7.31, and 7.36 g of polymer materials were irradiated with UV for 4, 8, and 16 hours, respectively.

Embodiment 3

[0066] Example 3: Thermal polymerization

[0067] In a 50 ml round bottom flask, 1.0 mM erbium chloride (0.44 g), 3.0 mM DCQ (0.64 g) and 2.0 mM VP (0.21 g) were added, and dissolved in 10 ml 2-methoxyethanol under stirring. Add 8.0 mM MMA (0.8 g), 8, 16 and 32 mM EGDMA (1.59, 3.17 and 6.34 g) and 50 mg AIBN, and stir until a homogeneous solution is obtained. Cool the polymerization mixture to 0°C and use N 2 Flush for 10 minutes, seal and heat and stir in an oil bath at about 80°C for 2 hours. The solid formed was washed with water and dried in an oven at 50°C. 4.32, 5.50 and 8.84 g of polymer material with 50%, 66% and 80% crosslinking monomer were obtained. The polymer embedded with erbium ions was leached with 100 ml 50% (v / v) HCl, stirred for 6 hours, filtered, and dried in an oven at 50°C. Obtained 2.59, 3.90 and 7.90 g of erbium ion imprinted polymer materials.

[0068] Advantages of the invention:

[0069] The liquid-liquid extraction method replaces the conventional ion e...

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Abstract

The invention relates to a method for synthesizing ion print polymeric material containing metallic ion recognition sites. The particles are copolymerized by functional monomers and crosslinking monomers under the condition of the existence of at least one metallic print ion in the form of a ternary complex. The polyreaction is carried out through gamma radiation (without an initiator) or photochemical polymerization or thermal polymerization (with an initiator, AIBN). After being dried, the material is ground and screened to obtain erbium ion print polymeric particles. The erbium ions are removed from the polymeric particles through inorganic acid leaching, thereby leaving cavity / binding sites in the polymeric particles. The obtained polymeric particles can be used as a solid phase extractant capable of selectively gathering the erbium ions in diluted aqueous solution.

Description

[0001] This application is a divisional application of the Chinese invention patent application No. 200380110941.0 filed on December 31, 2003 under the title of "Synthesis of Ion Imprinted Polymer Particles". Invention field [0002] The invention relates to the synthesis and method of ion imprinted polymer particles used for solid phase extraction and pre-concentration of erbium ions. The ion-imprinted polymer particles are prepared by radiochemical polymerization, photochemical polymerization, or thermal polymerization. Background of the invention [0003] Monazite is processed through a series of beneficiation methods to produce mild, moderate and severe rare earth chlorides. The last part contains 55-60% Y 2 O 3 And impurities Dy, Gd and Er. Prepare 99.9-99.999% Y 2 O 3 The importance of it is that it is widely used in the manufacture of lasers, superconducting materials and color TV phosphors. Therefore, the separation of Dy, Gd, and Er becomes the preparation of such high-pu...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F220/14C08F226/06C08F2/00C08J9/26B01J20/26B01J20/30
Inventor 卡拉·拉玛克瑞什娜玛丽·格莱蒂斯·约瑟夫塔拉斯拉·普拉萨达·拉奥
Owner COUNCIL OF SCI & IND RES
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