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Process for preparing nano polymer chelating agent contg. thioureido

A polymer chelating agent, technology containing thiourea group, applied in the field of preparation of nanometer polymer chelating agent containing thiourea group, to achieve high adsorption capacity and broad application prospects

Inactive Publication Date: 2003-03-12
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of polymer nanoparticles is usually emulsion polymerization, but the method of functionalization of nanoparticles through covalent modification of the surface of nanoparticles is rarely reported.

Method used

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  • Process for preparing nano polymer chelating agent contg. thioureido
  • Process for preparing nano polymer chelating agent contg. thioureido

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Ultrasonic dispersion of 0.1g of nano-diamond particles in 5 mL of toluene solution of N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane with a concentration of 99.0%wt, stirred for 24 hours, and centrifugal separation of nano-diamonds The particles were washed successively with toluene and deionized water, and vacuum-dried at a constant temperature of 50° C. for 24 hours to obtain nano-diamond particles with ethylenediamino functional groups on the surface.

[0016] Ultrasonically disperse 0.1 g of the above-prepared nano-diamond particles containing ethylenediamino functional groups on the surface in 5 mL of benzene solution containing 15% phenylisothiocyanate, stir and react at 104-106 °C for 2 hours, and centrifuge to separate the nano-diamond particles. The particles are washed successively with benzene and deionized water, and vacuum-dried at a constant temperature of 50° C. for 48 hours to obtain the desired nanometer thiourea-containing polymer chelating agent.

[...

Embodiment 2

[0019] Ultrasonic dispersion of 0.1g of nano-diamond particles in 50mL of 0.5%wt N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane in acetone solution, stirred for 24 hours, and centrifugal separation of nano-diamonds The particles were washed sequentially with acetone and deionized water, and vacuum-dried at a constant temperature of 50° C. for 36 hours to obtain nano-diamond particles with ethylenediamino functional groups on the surface.

[0020] Ultrasonic disperse 0.1 g of the nano-diamond particles containing ethylenediamino functional groups on the surface prepared above in 20 mL of toluene solution containing 5% phenyl isothiocyanate, stir and react at 104-106 °C for 4 hours, and centrifuge to separate the nano-diamond particles. The particles are washed successively with toluene and deionized water, and vacuum-dried at a constant temperature of 50° C. for 24 hours to obtain the required nanometer thiourea group-containing polymer chelating agent.

[0021] The functional ...

Embodiment 3

[0023] Ultrasonic dispersion of 0.1g of nano-diamond particles in 50 mL of acetone solution of N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane with a concentration of 25%wt, stirred for 24 hours, and centrifugal separation of nano-diamonds The particles were washed successively with acetone and deionized water, and vacuum-dried at a constant temperature of 55° C. for 36 hours to obtain nano-diamond particles with ethylenediamino functional groups on the surface.

[0024] Ultrasonic disperse 0.1 g of the nano-diamond particles containing ethylenediamino functional groups on the surface prepared above in 10 mL of toluene solution containing 5% phenylisothiocyanate, stir and react at 104-106 °C for 8 hours, and centrifuge to separate the nanoparticles , washed with toluene and deionized water in sequence, and vacuum-dried at a constant temperature of 60° C. for 24 hours to obtain the desired nanometer thiourea-containing polymer chelating agent.

[0025] The functional groups on t...

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Abstract

A nano-class high-molecular thioureido-containing chelating agent is prepared through ultrasonic dispersing of diamond nanoparticles containing amino or ethyldiamino groups on their surface in the solution of organic solvent containing benzene isosulfocyanate, stirring at 104-106 deg.C for 2-8 hr, centrifugal separation of nanoparticles, washing with organic solvent and then deionized water, and vacuum drying at 50-60 deg.c for 24-48 hr. Its advantages are high selectivity and high adsorption capacity.

Description

technical field [0001] The invention relates to a nanometer polymer carrier, in particular to a preparation method of a nanometer thiourea group-containing polymer chelating agent. Background technique [0002] Active groups loaded on polymer carriers have unique optical, electronic or catalytic properties, and are widely used in high-tech fields such as material science and molecular biotechnology. With the development of science and technology, polymer carriers are required to have high selectivity, accessibility and high catalytic activity. The emergence of nanomaterials provides a new opportunity for the development of polymer science and technology. Nanoparticles and dendrimers are widely used new polymer carriers and have become one of the important components of nanotechnology. The preparation method of polymer nanoparticles is usually emulsion polymerization, and the method of functionalizing nanoparticles through covalent modification o...

Claims

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Application Information

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IPC IPC(8): C08G83/00
Inventor 安小宁曾汉民
Owner SUN YAT SEN UNIV
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