Method for preparing ultrafiltration film of poly-ether-sulfone and anti-protein-contamination type

A polyethersulfone and protein technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of difficult control of modification effect, harsh conditions, complicated operation, etc., and achieve improved resistance to protein and oil The ability of molecular contamination, mild conditions, and the effect of simple preparation methods

Inactive Publication Date: 2007-07-25
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most modification methods are complicated to operate, harsh conditions, and difficult to control the modification effect, so the development of new modification technology is of great significance; existing modifiers are mainly hydrophilic chain polymers, such as polyethylene glycol , phospholipids

Method used

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  • Method for preparing ultrafiltration film of poly-ether-sulfone and anti-protein-contamination type

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preparation of modified polyethersulfone anti-protein fouling ultrafiltration membrane (membrane 1)

[0017] Weigh 7.2 grams of polyethersulfone and 26.8 grams of N,N-dimethylformamide into a three-necked flask, and heat and stir in a constant temperature water bath at 60°C for about 0.5 hours. After the polyethersulfone is completely dissolved, weigh 6.0 grams of polyethylene glycol with a molecular weight of 2000 as a porogen and add it to the solution, heat and stir at 60 °C for about 4 hours to dissolve, and mix well to obtain a casting solution a. Let stand for 2 hours for defoaming. After cooling to room temperature, pour the casting liquid a on the glass plate to scrape the film, place it in the air for 10 to 30 seconds, then put it in a water bath to solidify into a film, soak it in deionized water for 24 to 36 hours to obtain a blank polyether Sulfone ultrafiltration membrane b;

[0018] Weigh 1.0 g of polyvinyl alcohol, add 199.0 g of deionized water, heat a...

Embodiment 2

[0025] Preparation of modified polyethersulfone anti-protein fouling ultrafiltration membrane (membrane 2)

[0026] Weigh 7.2 grams of polyethersulfone and 26.8 grams of N,N-dimethylformamide into a three-necked flask, and heat and stir in a constant temperature water bath at 60°C for about 0.5 hours. After the polyethersulfone is completely dissolved, weigh 6.0 grams of polyethylene glycol with a molecular weight of 2000 as a porogen and add it to the solution, heat and stir at 60 °C for about 4 hours to dissolve, and mix well to obtain a casting solution a. Let stand for 2 hours for defoaming. After cooling to room temperature, pour the casting liquid a on the glass plate to scrape the film, place it in the air for 10 to 30 seconds, then put it in a water bath to solidify into a film, soak it in deionized water for 24 to 36 hours to obtain a blank polyether Sulfone ultrafiltration membrane b;

[0027] Weigh 2.0 grams of polyvinyl alcohol, add 198.0 grams of deionized water...

Embodiment 3

[0031] Preparation of modified polyethersulfone anti-protein fouling ultrafiltration membrane (membrane 3)

[0032] Weigh 7.2 grams of polyethersulfone and 26.8 grams of N,N-dimethylformamide into a three-necked flask, and heat and stir in a constant temperature water bath at 60°C for about 0.5 hours. After the polyethersulfone is completely dissolved, weigh 6.0 grams of polyethylene glycol with a molecular weight of 2000 as a porogen and add it to the solution, heat and stir at 60 °C for about 4 hours to dissolve, and mix well to obtain a casting solution a. Let stand for 2 hours for defoaming. After cooling to room temperature, pour the casting liquid a on the glass plate to scrape the film, place it in the air for 10 to 30 seconds, then put it in a water bath to solidify into a film, soak it in deionized water for 24 to 36 hours to obtain a blank polyether Sulfone ultrafiltration membrane b;

[0033] Weigh 4.0 grams of polyvinyl alcohol, add 196.0 grams of deionized water...

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Abstract

A process for preparing the ultrafiltering polyethersulfone membrane resisting against protein pollution includes such steps as preparing PVC solution and borax solution, washing the raw ultrafiltering polyethersulfone membrane, drying in the air, immersing in the PVC solution, washing, drying, immersing in the borax solution, washing, drying, and repeating the last 6 steps several times.

Description

technical field [0001] The invention relates to a preparation method of a polyethersulfone anti-protein pollution ultrafiltration membrane. It belongs to ultrafiltration membrane preparation technology. Background technique [0002] Ultrafiltration is a liquid-phase sieve separation process under the driving force of static pressure difference. It is separated according to the molecular weight difference of the separated substances. The sieving process is related to the pore size of the membrane. The molecular weight cut-off of ultrafiltration is about 500 to 500,000, and it is usually used in the purification, separation and concentration of macromolecular substances. The ultrafiltration process has the following advantages: (1) There is no interphase transformation, and the separation can be carried out at normal temperature and low pressure, so the energy consumption is low; (2) The equipment is small in size, simple in structure, and low in investment cost; (3) Membrane...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/68
Inventor 姜忠义苏延磊马小乐王艳强
Owner TIANJIN UNIV
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