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Method for manufacturing pH sensitive intelligent ceramic compound film

A ceramic composite membrane, ceramic membrane technology, applied in the field of preparation of intelligent ceramic composite membrane, to achieve the effect of good pH sensitivity, low cost, and large permeation flux

Inactive Publication Date: 2008-12-10
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there is no report on the preparation of pH-sensitive smart ceramic composite membranes using alumina ceramic membranes as base membranes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Prepare the pH-sensitive smart ceramic composite membrane according to the following steps:

[0025] (1) Modification of ceramic membrane KH-570: Add a specific surface area of ​​6.15cm to the conical flask 2 SiO 2 Ceramic diaphragm and 12.3ml of toluene solution with a mass concentration of 10% KH-570, ultrasonically oscillated to dissolve evenly, and reflux reaction at a temperature of 80°C; after the reaction, the diaphragm was washed with toluene, acetone, ethanol and water in sequence, and the The final film was first dried at room temperature, and then dried at 120°C;

[0026] (2) Put 0.05g of potassium persulfate and 50ml of deionized water into the reactor, ultrasonicate for a period of time to make the solution uniform, then add 3ml of acrylic acid monomer, pass in nitrogen and add the above-mentioned modified ceramic diaphragm, heat at 50°C , constant temperature reaction for 30min;

[0027] (3) The membrane was cleaned with deionized water and ultrasonical...

Embodiment 2

[0029] (1) Modification of ceramic membrane KH-570: Add a specific surface area of ​​6.15cm to the conical flask 2 ZrO 2 Ceramic diaphragm and 18.5ml of toluene solution with a mass concentration of 15% KH-570, ultrasonically oscillated to dissolve evenly, and reflux reaction at a temperature of 80°C; after the reaction, the diaphragm was washed with toluene, acetone, ethanol and water in sequence, The cleaned membrane is first dried at room temperature, and then dried at 120°C;

[0030] (2) Put 0.05g of potassium persulfate and 50ml of deionized water into the reactor, ultrasonicate for a period of time to make the solution uniform, then add 5ml of acrylic acid monomer, feed nitrogen and add the above-mentioned modified ceramic diaphragm, heat to 70 ℃, constant temperature reaction 70min;

[0031](3) The diaphragm was cleaned with deionized water and ultrasonically cleaned several times, and the diaphragm was dried at 90° C. to obtain a pH-sensitive smart ceramic composite ...

Embodiment 3

[0033] (1) Modification of ceramic membrane KH-570: Add a specific surface area of ​​6.15cm to the conical flask 2 α-Al 2 o 3 Ceramic diaphragm and 24.6ml of toluene solution with a mass concentration of 5% KH-570, ultrasonically oscillated to dissolve evenly, and reflux reaction at a temperature of 80°C; after the reaction, the diaphragm was washed with toluene, acetone, ethanol and water in sequence, and cleaned The final film was first dried at room temperature, and then dried at 120°C;

[0034] (2) Put 0.05g of potassium persulfate and 50ml of deionized water into the reactor, ultrasonicate for a period of time to make the solution uniform, then add 8ml of acrylic acid monomer, feed nitrogen and add the above-mentioned modified ceramic diaphragm, heat to 100 ℃, constant temperature reaction for 120min.

[0035] (3) The membrane was cleaned with deionized water and ultrasonically cleaned several times, and the membrane was dried at 100° C. to obtain a pH-sensitive smart ...

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Abstract

The invention discloses a preparation method for a pH sensitive type intelligent ceramic composite membrane. The method comprises the following steps that: multifunctional-radical alkoxy silane has a polyreaction with hydroxide radicals on the surface of the ceramic membrane to form a hydrophobic vinyl chain on the surface of the ceramic membrane; then the ceramic membrane with the vinyl chain has a free radical polymerization reaction with pH sensitive functional monomer acrylic acid under the protection of nitrogen to obtain the pH sensitive type intelligent ceramic composite membrane. The method is carried out in a normal pressure status and all used reagents are conventional reagents, thereby bringing about basic equipment, low cost, and capability of industrial continuous production. The ceramic composite membrane has high mechanical strength, good stability, good pH sensitivity, great permeation flux and easy cleaning. As the aperture of the ceramic membrane can vary with the pH value, the ceramic membrane is an intelligent membrane capable of separating mixtures from different molecular weights only through one membrane via adjusting the pH value.

Description

technical field [0001] The invention relates to a preparation method of an intelligent ceramic composite membrane, specifically a pH-sensitive and pH-responsive acrylic acid monomer (AAC) and a ceramic membrane (α-Al 2 o 3 The invention discloses a preparation method of a pH-sensitive intelligent ceramic composite membrane obtained by graft copolymerization, and belongs to the technical field of membranes. Background technique [0002] Membrane technology is a contemporary high-efficiency separation technology. Compared with traditional separation technology chromatography and distillation, it has outstanding advantages such as high separation efficiency, low energy consumption, convenient operation, no pollution to the environment, easy amplification, and coupling with other separation technologies. In membrane separation technology, membrane material is the key to realize the separation process. After more than 100 years of development, membrane materials have gradually ...

Claims

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Application Information

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IPC IPC(8): C04B41/83
Inventor 赵宜江杨连丽李梅生邢卫红周守勇张艳陈岩
Owner HUAIYIN TEACHERS COLLEGE
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