Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation method of solid-phase microextraction fiber coated with hydrophobic ionic liquid modified cellulose airgel

A cellulose aerogel, ionic liquid technology, applied in ion exchange, ion exchange regeneration, chemical instruments and methods, etc., can solve the problems of limited application, low surface energy, etc., to improve analysis speed, improve stability, improve The effect of chemical bonding

Active Publication Date: 2021-07-27
UNIV OF JINAN
View PDF5 Cites 0 Cited by
  • 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 its application in extraction is limited due to its smooth surface and low surface energy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
porosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing hydrophobic ionic liquid modified cellulose airgel coating solid-phase microextraction fiber on basalt fiber, especially relates to using ionic liquid as hydrophobic agent and crosslinking agent to make cellulose airgel synthesized in situ onto the fiber. The new method is characterized in that basalt fibers are selected as the carrier, and then the cellulose airgel is prepared in situ on the surface of the fiber with a synthetic hydrophobic ionic liquid. The solid-phase microextraction fiber prepared by the invention has the advantages of high mechanical strength, good coating stability and strong extraction performance, and can be applied to the enrichment analysis of trace hydrophobic components in samples such as medicine, environment and biochemistry.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01D15/08B01J20/30
CPCB01D15/08B01J20/24B01J20/28047
Inventor 孙敏冯娟娟王秀琴田雨
Owner UNIV OF JINAN