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Metal ion imprinted hydrogel adsorbing material with interpenetrating polymer network (IPN) structure and preparation method for metal ion imprinted hydrogel adsorbing material

A technology of metal ion imprinting and interpenetrating network is applied in the field of metal ion imprinting interpenetrating network hydrogel adsorption material and its preparation, which can solve the problems of complex preparation process and the like

Active Publication Date: 2012-12-19
苏州博睿特环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned sequential interpenetrating polymer network undergoes a two-step polymerization network formation process, and the preparation process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018]3.0 g of methacrylamide, 2.0 g of diethylene glycol divinyl ether, 0.125 g of N,N'-methylenebisacrylamide, 0.025 g of Darocur-1173 and 0.025 g of 4,4'- Dimethyl-diphenyliodonium hexafluorophosphate, 1.25g Cu(NO 3 ) 2 ·3H 2 O was dissolved in 2.5g of absolute ethanol, magnetically stirred, mixed evenly, poured into a polypropylene mold, and cured with ultraviolet light. The tensile strength of the obtained hydrogel material was 1.64 MPa. The hydrogel material was soaked in 0.005mol / L Cu 2+ In solution, under the condition of pH 5, per gram of the hydrogel material to Cu 2+ The adsorption capacity is 1.78mmol.

Embodiment 2

[0020] 2.0 g of acrylic acid, 3.0 g of diethylene glycol divinyl ether, 0.05 g of N,N'-methylenebisacrylamide, 0.025 g of Darocur-1173 and 0.025 g of 4,4'-dimethyl -Diphenyliodonium hexafluorophosphate, 2.0g Cu(NO 3 ) 2 ·3H 2 O was dissolved in 2.5g of absolute ethanol, magnetically stirred, mixed evenly, poured into a polypropylene mold, and cured with ultraviolet light. The tensile strength of the obtained hydrogel material was 2.0 MPa. The hydrogel material was soaked in 0.005mol / L Cu 2+ In solution, under the condition of pH 5, per gram of the hydrogel material to Cu 2+ The adsorption amount is 2.14mmol.

Embodiment 3

[0022] 0.5g of methacrylic acid, 4.5g of diethylene glycol divinyl ether, 0.025g of N,N'-methylenebisacrylamide, 0.025g of Darocur-1173 and 0.025g of 4,4'-di Methyl-diphenyliodonium hexafluorophosphate, 1.0 g Pb(NO 3 ) 2 ·6H 2 O was dissolved in 2.5g of absolute ethanol, magnetically stirred, mixed evenly, poured into a polypropylene mold, and cured with ultraviolet light. The tensile strength of the obtained hydrogel material was 2.15 MPa. The hydrogel material was soaked in 0.005mol / L Pb 2+ In solution, under the condition of pH 5, per gram of the hydrogel material to Pb 2+ The adsorption capacity is 3.5mmol.

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Abstract

The invention discloses a metal ion imprinted hydrogel adsorbing material with an interpenetrating polymer network (IPN) structure and a preparation method for the metal ion imprinted hydrogel adsorbing material. The material is obtained by the following steps of: evenly mixing a component group (1), a component group (2) and metal salt (3) to obtain a mixture; then, performing one-step ultraviolet-induced polymerization on the mixture; and then, removing template ions, wherein the component group (1) comprises an acrylic monomer, an acrylic cross-linking agent and a radical initiator, and the component group (2) comprises a vinethene cross-linking agent and a cationic initiator. The metal ion imprinted hydrogel adsorbing material is excellent in mechanical property, higher in adsorption capacity and stronger in selective adsorptivity. The preparation method for the metal ion imprinted hydrogel adsorbing material comprises the following steps of: dissolving the acrylic monomer, the acrylic cross-linking agent, the radical initiator, the vinethene cross-linking agent, the cationic initiator and the metal salt in a solvent and evenly mixing; then, injecting into a mold; curing for 5 minutes to 1 hour through one-step ultraviolet irradiation; extracting an obtained in a hydrochloric acid solution; and removing the template ions to obtain the metal ion imprinted hydrogel adsorbing material.

Description

technical field [0001] The invention relates to a metal ion imprinted interpenetrating network hydrogel adsorption material and a preparation method thereof, belonging to the technical field of environmental protection. Background technique [0002] Metal ion-imprinted polymers prepared by imprinting technology usually have high selectivity and strong recognition characteristics for template ions, and have good thermal and chemical stability. Shea and Sasaki made linear polymers from functional monomers that can coordinate with metal ions, then formed complexes with metal ions, and finally obtained metal ion-imprinted polymers through cross-linking polymerization. Compared with unimprinted polymers, the selectivity of imprinted polymers to imprinted metal ions is significantly improved (Shea KJ, Sasaki DY. On the control of microenvironment shape of functionalized network polymers prepared by template polymerization[J]. J Am Chem Soc, 1989, 111(9): 3442-3444.). Since then,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30
Inventor 王静静
Owner 苏州博睿特环保科技有限公司
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