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Polymer thin film containing ion liquid and preparing method thereof

A polymer film and ionic liquid technology, applied in the field of polymer film and its preparation, can solve the problems of ionic liquid loss, limited interaction force, change of physical and chemical properties, etc., and achieve low cost, simple operation and wide application prospects Effect

Inactive Publication Date: 2008-07-02
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are unavoidable shortcomings in the above two methods: the impregnation method will cause the loss of the ionic liquid to varying degrees during use due to the limited interaction force; while the chemical bonding method restricts the freedom of the ionic liquid, thus changing the Physicochemical Properties of Ionic Liquids in Liquid State
However, the method of preparing a new type of polymer-loaded ionic liquid functional membrane by physically immobilizing the ionic liquid into the membrane material through a polymer has not yet been reported.

Method used

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  • Polymer thin film containing ion liquid and preparing method thereof
  • Polymer thin film containing ion liquid and preparing method thereof
  • Polymer thin film containing ion liquid and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 3g of PVA (molecular weight 13000-23000) in a 100ml Erlenmeyer flask, add 47ml of distilled water, heat to 80°C, weigh 1ml of 1-methyl-3-butylimidazolium fluoroborate ionic liquid, and quickly transfer to PVA In the aqueous solution, heat at 80°C for 8 hours, cool down to room temperature, coat the uniform solution on a stainless steel plate, dry at room temperature to form a film, and place it in a desiccator. The ionic liquid accounts for 30% of the film weight. A 10% (V / V) glutaraldehyde solution in acetone was prepared, sprayed onto the prepared film, cross-linked for 30 min, and dried to obtain a cross-linked film.

Embodiment 2

[0027] Take 3g of PVA (molecular weight 13000-23000) in a 100ml Erlenmeyer flask, add 47ml of distilled water, heat to 75°C, weigh 1ml of 1-methyl-3-octylimidazolium fluoroborate ionic liquid, and quickly transfer to PVA In the aqueous solution, heat at 75°C for 8h. Cool down to room temperature, coat the uniform solution on a stainless steel plate, dry at room temperature to form a film, and place it in a desiccator. The ionic liquid accounts for 30% of the film weight. A 10% (V / V) glutaraldehyde solution in acetone was prepared, sprayed onto the prepared film, cross-linked for 30 min, and dried to obtain a cross-linked film.

Embodiment 3

[0029] Take 3g of PVA (molecular weight 13000-23000) in a 100ml Erlenmeyer flask, add 47ml of distilled water, heat to 60°C, weigh 1ml of 1-methyl-3-butylsulfonate imidazolium fluoroborate ionic liquid, and quickly transfer Into the PVA aqueous solution, heated at 60°C for 9h, then cooled to room temperature, coated the uniform solution on a stainless steel plate, dried at room temperature to form a film, and placed in a desiccator. The ionic liquid accounted for 30% of the film weight. A 10% (V / V) glutaraldehyde solution in acetone was prepared, sprayed onto the prepared film, cross-linked for 30 min, and dried to obtain a cross-linked film.

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Abstract

The invention discloses a polymer membrane containing ionic liquid and a preparation method thereof. The polymer membrane is produced by membrane material and the ionic liquid absorbed and loaded on the membrane material, and the weight of the ionic liquid accounts for 0.1 to 70 percent of the weight of the polymer membrane. After homogeneous solution is formed by dissolving the ionic liquid into water solution of polyvinyl alcohol, a membrane is formed after the solution is dried at the ambient temperature, and the polymer membrane is obtained after the membrane is crosslinked with a crosslinking agent. The membrane of the invention has better thermal stability and mechanical stability, simple synthetic operation, potential application value in the processes of catalytic esterification, organic sulfide separation, aromatic hydrocarbon separation and alkane separation, etc, which has wide application on membrane catalysis, segregation analysis, etc.

Description

technical field [0001] The invention relates to a polymer film containing ionic liquid and a preparation method thereof, and belongs to the technical field of new functional materials and its preparation. Background technique [0002] As a new type of green solvent and functional material developed in recent years, ionic liquid has aroused people's widespread attention and great research enthusiasm. It mainly refers to a class of substances composed entirely of organic cations and inorganic or organic anions. Unlike traditional molten salts such as sodium chloride, the anion and cation of ionic liquids have a great asymmetry, which also causes their melting point to be greatly lower than that of traditional molten salts, and they are liquid even at room temperature, so they are also called It is a room temperature ionic liquid. In order to distinguish it from the traditional molten salt system, molten salts with a melting point below 100°C are called ionic liquids. Differ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L29/04C08K5/3445C08K5/3432C08J3/24
Inventor 邓友全朱来英石峰张庆华
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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