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Polyionic liquid gel with nanopores and method thereof

A technology of polyionic liquids and nanopores, applied in chemical instruments and methods, organic chemistry, alkali metal oxides/hydroxides, etc., can solve problems such as poor adsorption capacity and no network, and achieve increased utilization and excellent performance The effect of adsorption capacity

Inactive Publication Date: 2018-09-04
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a polyionic liquid gel and method with nano-holes, which solves the problems of traditional gels without network cross-linked structure and poor adsorption capacity, and can form a three-dimensional highly branched structure inside , with excellent adsorption capacity

Method used

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  • Polyionic liquid gel with nanopores and method thereof
  • Polyionic liquid gel with nanopores and method thereof
  • Polyionic liquid gel with nanopores and method thereof

Examples

Experimental program
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experiment example 1

[0045] Experimental example 1 terminal group has the synthetic method of the A monomer of imidazole

[0046] Such as figure 2 Shown is the synthetic route diagram of A monomer of Experimental Example 1 of the present invention, through 1,3,5-triacryloyl hexahydro-1,3,5-triazine (TT) and imidazole (Im) Michael addition The reaction is prepared, and the specific technical scheme is as follows:

[0047] TT (5g, 20mmol) and Im (10g, 106mmol) were added to 30mL of anhydrous methanol and refluxed for 24h. After the reaction, the reaction system was precipitated in a mixed solvent of ethyl acetate / tetrahydrofuran (1:1 by volume). After dissolving-precipitation (methanol-ethyl acetate / tetrahydrofuran), washing twice, and filtering, the resulting precipitate was vacuum-dried to constant weight at room temperature to obtain A monomer (TT Im), such as image 3 Shown is the NMR spectrum of A monomer prepared in Experimental Example 1 of the present invention.

experiment example 2

[0048] Experimental example 2 end group has the synthetic method of chlorine or bromine B monomer

[0049] Such as image 3 Shown is the synthesis route diagram of the B monomer of Experimental Example 2 of the present invention, with polyoxyethylene glyceryl ether (B-PEG-OH, that is, compound C) and chloroacetic acid (CAA) or bromoacetic acid (BAA) as typical Reaction, the technical scheme is as follows:

[0050] B-PEG-OH (10g, 10mmol), CAA (4.25g, 45mmol) or BAA (6.25g, 45mmol), p-TSA (0.11g, 0.6mmol) (p-TSA, p-toluenesulfonic acid) and 200mL of toluene was added to the Dean-Stark apparatus, heated to 120°C, and refluxed for 12h. After the reaction, the toluene was evaporated, and the crude product was dissolved in dichloromethane, followed by washing with 2% Na 2 CO 3 Wash 3 times, wash 2 times with 5% NaCl, and wash with pure water until the pH of the aqueous layer is neutral. with anhydrous MgSO 4 Dry the organic layer, filter, remove the solvent under reduced pressur...

experiment example 3

[0051] The preparation method of experimental example 3 imidazolium salt type hyperbranched polyionic liquid

[0052] Add 660mg A monomer and 660mg B monomer (equal molar ratio of A and B reacting functional groups) and different volumes of dry DMF into the reagent bottle (A monomer and B monomer with bromine at the end group get samples 1#~6# ), after stirring to dissolve, take out the rotor. Seal the reaction bottle and place it in an oil bath at 60-80°C for 14-24 hours. After the reaction, the reaction bottle was taken out from the oil bath, and the system was cooled to room temperature, and the sample was taken out and sliced. Soak the removed gel in deionized water for 2 days (during which the water was changed 3 times a day) to wash away unreacted monomers and DMF. Then, the gel piece was pulled out, placed in an ethanol solution and soaked for one day (during which, the ethanol was changed 3 times a day), to replace the water in the gel network, the gel piece was pull...

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Abstract

The invention discloses a polyionic liquid gel with nanopores and a method thereof. The polyionic liquid gel has a monomer structure shown as a formula (1), wherein in the formula (1), R is an N heterocyclic ring and comprises one of FORMULAE, X comprises Br-, Cl- or FORMULA and n is 6-30. The polyionic liquid gel has nanopores, comprises a three-dimensional hyperbranched topological structure, shows excellent adsorption capacity, and has a huge application potential in the field of dyes, heavy metal ion adsorption, controlled medicine release, molecular imprinting, protein recognition and thelike.

Description

technical field [0001] The invention belongs to the field of synthetic materials, and in particular relates to a polyionic liquid gel with nano holes and a method thereof. Background technique [0002] Hexavalent chromium (Cr(VI)) pollutants widely exist in various large-scale industrial wastewater such as metallurgy, machinery, leather tanning, electroplating, leather and printing and dyeing. As an acute carcinogen, Cr(VI) is soluble in almost the entire pH range and is easily absorbed by the human body. It can penetrate the human body through digestion, breathing, skin and mucous membranes, and cause damage to these organs. Therefore, effective removal of Cr(VI) from water is of great significance for protecting public health and ecological environment. [0003] So far, many methods have been developed to treat Cr(VI)-containing wastewater, such as precipitation, electrocoagulation, bioelectrochemical systems, photocatalytic degradation, bioremediation, membrane separatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/333B01J20/26B01J20/28B01J20/30C02F1/28C07D401/06C02F101/22
CPCB01J20/264B01J20/28047B01J20/2808C02F1/285C02F2101/22C07D401/06C08G65/33396
Inventor 宋文琦高博刘玉杨卓澜申璐谭帅李浩
Owner XIJING UNIV
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