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Preparation method of carbon dioxide-responsive membrane

A carbon dioxide, responsive technology, applied in the field of preparing carbon dioxide responsive membrane, can solve the problems of cumbersome process, high energy consumption and high cost of direct scraping method and grafting method, and achieve the effect of excellent recyclability

Active Publication Date: 2016-11-16
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the direct scraping method and the grafting method are cumbersome, consume a lot of energy, and have high costs; the method of direct filtration and filling is simple, fast, low in cost, and has obvious advantages

Method used

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  • Preparation method of carbon dioxide-responsive membrane
  • Preparation method of carbon dioxide-responsive membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] At room temperature, put 2g of diethylaminoethyl methacrylate, 0.1g of N,N'-methylenebisacrylamide, 0.16g of azobisisobutylamidine hydrochloride, and 38g of deionized water in a 100ml round bottom flask Mix evenly in the medium, pass nitrogen to remove oxygen for 0.5h, heat up to 70°C, and react with magnetic stirring for 6h to obtain carbon dioxide responsive microgel emulsion.

[0026] Dilute 10 mL of the obtained carbon dioxide-responsive microgel emulsion with 490 mL of deionized water to obtain an 8 mg / L carbon dioxide-responsive microgel dispersion. Put a 0.45um cellulose ester microporous membrane (Shanghai Xingya Purification Material Factory Q / IEFJ01-1997, diameter 47mm) into the filter device, and use 500mL 8mg / L carbon dioxide responsive microgel under the negative pressure of 0.09MPa The dispersion was filtered for 20 minutes, and finally the membrane was reversed in a filter device and washed with 100 ml of deionized water to obtain a carbon dioxide respons...

Embodiment 2

[0030] At room temperature, put 2g of diethylaminoethyl methacrylate, 0.1g of N,N'-methylenebisacrylamide, 0.16g of azobisisobutylamidine hydrochloride, and 38g of deionized water in a 100ml round bottom flask Mix evenly in the medium, pass nitrogen to remove oxygen for 0.5h, heat up to 70°C, and react with magnetic stirring for 6h to obtain carbon dioxide responsive microgel emulsion.

[0031]Dilute 10 mL of the obtained carbon dioxide-responsive microgel emulsion with 490 mL of deionized water to obtain an 8 mg / L carbon dioxide-responsive microgel dispersion. A 0.45um polyethersulfone microporous membrane (Merck Milipore HPWP04700, 47mm in diameter) was packed into a filter device, and filtered with 500mL 8mg / L carbon dioxide responsive microgel dispersion for 20min under a negative pressure of 0.09MPa, and finally The membrane was reversely placed in a filter device and washed with 100 ml of deionized water to obtain a carbon dioxide responsive membrane.

[0032] Under a n...

Embodiment 3

[0035] At room temperature, put 3g of diethylaminoethyl methacrylate, 0.1g of N,N'-methylenebisacrylamide, 0.32g of azobisisobutylamidine hydrochloride, and 38g of deionized water in a 100ml round bottom flask Mix evenly in the medium, pass nitrogen to remove oxygen for 0.5h, heat up to 70°C, and react with magnetic stirring for 6h to obtain carbon dioxide responsive microgel emulsion.

[0036] Dilute 20 mL of the obtained carbon dioxide-responsive microgel emulsion with 480 mL of deionized water to obtain a 16 mg / L carbon dioxide-responsive microgel dispersion. A 0.45um polypropylene microporous membrane (Haining Taoyuan Medical Chemical Instrument Factory, 47mm in diameter) was put into the filter device, and filtered with 500mL 16mg / L carbon dioxide responsive microgel dispersion for 20min under a negative pressure of 0.09MPa, Finally, the membrane was reversely placed in a filter device and washed with 100 ml of deionized water to obtain a carbon dioxide responsive membran...

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Abstract

The invention provides a preparation method of a carbon dioxide-responsive membrane. The preparation method includes: mixing a carbon dioxide-responsive monomer, a cross-linking agent, an initiating agent and water uniformly, heating to 40-90 DEG C after deoxygenizing in nitrogen, and subjecting to reaction for 1-24 hours to obtain carbon dioxide-responsive microgel latex; diluting the carbon dioxide-responsive microgel latex through deionized water to obtain carbon dioxide-responsive microgel dispersion liquid, placing a basement membrane in a filtering device, and filtering the basement membrane through the carbon dioxide-responsive microgel dispersion liquid in the condition of positive pressure or negative pressure to obtain the carbon dioxide-responsive membrane. The preparation method has the advantages that carbon dioxide-responsive microgel is placed into the basement membrane by a simple direct filtering method, responsiveness of the carbon dioxide-responsive membrane to CO2 (carbon dioxide) is achieved since size of an effective membrane hole is changed due to the fact that size of the microgel in the basement membrane is responsive to CO2, and the carbon dioxide-responsive membrane prepared by the preparation method has the advantages of mutational front-back water flow quantity, mutational filter fineness and excellent circularity.

Description

(1) Technical field [0001] The invention relates to a simple and rapid method for preparing a carbon dioxide responsive membrane, in particular to a preparation method for filling a carbon dioxide responsive microgel into a base membrane by a direct filtration method to obtain a carbon dioxide responsive membrane. (2) Background technology [0002] Membrane separation method is a new type of separation technology that has developed rapidly in the past ten years. With the development and application of artificially synthesized polymer membrane materials, membrane separation technology has developed rapidly, and its application range has become wider and wider. In the actual application process , the requirements for the membrane are getting higher and higher. Traditional membrane materials play an important role in production and life. Most of these separation membranes are materials with constant selectivity and permeability, and changes in external environmental factors (su...

Claims

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Application Information

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IPC IPC(8): B01D69/02B01D67/00B01D71/68B01D71/34B01D71/12
CPCB01D67/0002B01D67/0006B01D69/02B01D71/12B01D71/34B01D71/68B01D2323/30
Inventor 张祺王镇武汤俊王建黎
Owner ZHEJIANG UNIV OF TECH
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