Method for preparing solid phase micro-extraction fiber of hydrophobic ionic liquid modified cellulose aerogel coating

A technology of cellulose airgel and ionic liquid, which is applied in the direction of ion exchange, ion exchange regeneration, chemical instruments and methods, etc., can solve the problems of limited application and low surface energy, and achieve improved analysis speed, improved stability, improved The effect of sensitivity

Active Publication Date: 2019-01-11
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Basalt fiber is one of the four functional fibers developed by the country, but i...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A. Synthesis of Hydrophobic Ionic Liquids

[0021] In the reactor, add 1-octyl imidazole and 3-chloropropyltrimethoxysilane with a molar ratio of 1:1, the mass percentage of 1-octyl imidazole is 25%, with dimethylformamide as solvent, Under nitrogen protection, react at 110°C for 2 days to obtain a hydrophobic ionic liquid;

[0022] B. Preparation of Hydrophobic Ionic Liquid Modified Cellulose Airgel Coated Fibers for Solid Phase Microextraction

[0023] Add cellulose, thiourea, sodium hydroxide and water to obtain mixed solution in reactor, the mass ratio of cellulose, thiourea, sodium hydroxide in mixed solution is 1:1:2.5, and the mass percent composition of cellulose is 8%, and then the hydrophobic ionic liquid was added to the mixed solution to obtain a reaction solution. The molar ratio of cellulose to the hydrophobic ionic liquid in the reaction solution was 1:0.5. The basalt fiber was immersed in the reaction solution, and the solid content of the fiber and t...

Embodiment 2

[0025] A. Synthesis of Hydrophobic Ionic Liquids

[0026] In the reactor, add 1-octyl imidazole and 3-chloropropyl trimethoxysilane with a molar ratio of 1:1, the mass percentage of 1-octyl imidazole is 20%, with dimethylformamide as solvent, Under nitrogen protection, react at 110°C for 1 day to obtain a hydrophobic ionic liquid;

[0027] B. Preparation of Hydrophobic Ionic Liquid Modified Cellulose Airgel Coated Fibers for Solid Phase Microextraction

[0028] In reactor, add cellulose, thiourea, sodium hydroxide and water to obtain mixed solution, the mass ratio of cellulose, thiourea, sodium hydroxide in mixed solution is 1:1:3, and the mass percent composition of cellulose is 5%, and then the hydrophobic ionic liquid was added to the mixed solution to obtain a reaction solution. The molar ratio of cellulose to the hydrophobic ionic liquid in the reaction solution was 1:2. The basalt fiber was immersed in the reaction solution, and the solid content of the fiber and the ...

Embodiment 3

[0030] A. Synthesis of Hydrophobic Ionic Liquids

[0031] In the reactor, add 1-octyl imidazole and 3-chloropropyltrimethoxysilane with a molar ratio of 1:1, the mass percentage of 1-octyl imidazole is 23%, with dimethylformamide as solvent, Under nitrogen protection, react at 110°C for 1.5 days to obtain a hydrophobic ionic liquid;

[0032] B. Preparation of Hydrophobic Ionic Liquid Modified Cellulose Airgel Coated Fibers for Solid Phase Microextraction

[0033] Add cellulose, thiourea, sodium hydroxide and water to obtain mixed solution in reactor, the mass ratio of cellulose, thiourea, sodium hydroxide in mixed solution is 1:2:3, and the mass percentage composition of cellulose is 7%, and then the hydrophobic ionic liquid was added to the mixed solution to obtain a reaction solution. The molar ratio of cellulose to the hydrophobic ionic liquid in the reaction solution was 1:1. The basalt fiber was immersed in the reaction solution, and the solid content of the fiber and ...

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Abstract

The invention discloses a method for preparing a solid phase micro-extraction fiber of a hydrophobic ionic liquid modified cellulose aerogel coating on a basalt fiber and in particular relates to a method for synthesizing cellulose aerogel on a fiber in situ by taking an ionic liquid as a hydrophobing agent and a crosslinking agent. The novel method is characterized in that the basalt fiber is selected as a carrier, and then, the cellulose aerogel is prepared on the surface of the fiber in situ by using the synthesized hydrophobic ionic liquid. The solid phase micro-extraction fiber prepared by using the method has the advantages of high mechanical strength, good coating stability and high extraction property and can be applied to enrichment analysis of trace hydrophobic components in samples on the aspects such as drugs, environments and biochemicals.

Description

technical field [0001] The invention relates to a technique for preparing a solid-phase microextraction fiber coated with a hydrophobic ionic liquid modified cellulose airgel on a fiber carrier. Background technique [0002] Solid-phase microextraction is a new type of sample pretreatment technology developed in the 1990s that integrates sampling, enrichment, purification, and analysis. It has the advantages of simplicity, speed, sensitivity, automation, and instrumentation. , food, medicine and biological analysis and other fields have been widely used. In-tube solid-phase microextraction is a form of solid-phase microextraction, the core of which is the fibrous support and coating in the tube. Basalt fiber is one of the four major functional fibers developed by the country, but its application in extraction is limited due to its smooth surface and low surface energy. [0003] Airgel is a nanoporous amorphous lightweight solid material with a three-dimensional spatial net...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01D15/08B01J20/30
CPCB01D15/08B01J20/24B01J20/28047
Inventor 王秀琴孙敏冯娟娟田雨
Owner UNIV OF JINAN
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