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Polymer electrolyte membrane based on sodium glycinate and preparation method and application of membrane

A technology of sodium glycinate and polyelectrolyte, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve the problems of difficulty in achieving simultaneous improvement of permeability and selectivity, restriction of separation performance, etc., so as to improve gas separation performance, The effect of low price and simple preparation process

Active Publication Date: 2017-01-04
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the polymer membrane has the advantages of good separation performance, low cost, and easy processing, but its separation performance is restricted by the "trade-off" effect, that is, when the permeability increases, the selectivity decreases, and vice versa, it is difficult to achieve permeability and while increasing selectivity

Method used

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  • Polymer electrolyte membrane based on sodium glycinate and preparation method and application of membrane
  • Polymer electrolyte membrane based on sodium glycinate and preparation method and application of membrane
  • Polymer electrolyte membrane based on sodium glycinate and preparation method and application of membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Prepare a polyelectrolyte membrane based on sodium glycinate, the polyelectrolyte membrane has a thickness of 115 μm, and the polyelectrolyte membrane uses polyether-polyamide block copolymer as the membrane matrix, and sodium glycinate is added in the membrane matrix, wherein the polyether -The mass ratio of polyamide block copolymer to sodium glycinate is 1:0.05, the preparation method of this polyelectrolyte membrane is as follows:

[0027] The preparation of step 1, sodium glycinate solution:

[0028] Add 5 g of ethanol aqueous solution with a mass fraction of 70% in the sample tube, weigh 0.05 g of sodium glycinate, add it into the above sample tube, shake well until the sodium glycinate dissolves, and obtain a sodium glycinate solution;

[0029] Step 2, the preparation of polyether-polyamide block copolymer solution:

[0030] Weigh 1.0g of polyether-polyamide block copolymer and dissolve it in 19g of 70% ethanol aqueous solution by mass fraction, stir at 80°C for...

Embodiment 2

[0034] Prepare a polyelectrolyte membrane based on sodium glycinate. The difference from the polyelectrolyte membrane in Example 1 is that the thickness of the membrane is 128 μm, wherein the mass ratio of polyether-polyamide block copolymer to sodium glycinate is 1:0.1, The only difference between the preparation of the polyelectrolyte membrane and the preparation method of Example 1 is that in step 1, the weighing of 0.05 g sodium glycinate is changed to weighing 0.1 g of sodium glycinate; in step 3, a polyelectrolyte with a thickness of 128 μm is finally obtained membrane.

Embodiment 3

[0036] Prepare a polyelectrolyte membrane based on sodium glycinate. The difference from the polyelectrolyte membrane in Example 1 is that the thickness of the membrane is 143 μm, wherein the mass ratio of polyether-polyamide block copolymer to sodium glycinate is 1:0.15, The only difference between the preparation of the polyelectrolyte membrane and the preparation method of Example 1 is that in step 1, 0.05 g of sodium glycinate is changed to 0.15 g of sodium glycinate; in step 3, a polyelectrolyte with a thickness of 143 μm is finally obtained membrane.

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Abstract

The invention discloses a polymer electrolyte membrane based on sodium glycinate and a preparation method of the membrane. The membrane is prepared from polyether-polyamide segmented copolymer and sodium glycinate. The preparation method includes the steps that firstly, a sodium glycinate solution is prepared; secondly, a polyether-polyamide segmented copolymer solution is prepared; thirdly, the polymer electrolyte membrane is prepared. The polymer electrolyte membrane based on sodium glycinate can be used for separating CO2 / CH4 and CO2 / N2 mixed gas, the preparation process is simple, gas separation performance of the polymer electrolyte membrane is improved, raw materials in use are low in price and easy to obtain, and the membrane has potential industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of organic functional materials, in particular to a polyelectrolyte membrane based on sodium glycinate. Background technique [0002] With the deepening of the energy and environmental crisis, the development of high-efficiency, low energy consumption, and environmentally friendly separation technology is the key to solving energy gas purification and greenhouse gas emission reduction. Membrane separation technology is one of the new separation technologies with high efficiency, low energy consumption, low carbon, small footprint, and easy operation. Membrane materials are the key components of membrane separation technology. The physical and chemical properties of the membrane material determine the separation performance of the membrane. The separation performance of the membrane determines the effect and operating cost of the membrane separation technology, while the difficulty of membrane preparation and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/80B01D67/00B01D53/22
CPCB01D53/228B01D67/0002B01D71/80B01D2256/18B01D2256/245B01D2257/504Y02C20/40
Inventor 李雪琴郭瑞丽侯进鹏魏忠
Owner SHIHEZI UNIVERSITY
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