A kind of preparation method of hydrophilic separation membrane
A hydrophilic and separation membrane technology, which is applied in semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve the problems of surface layer and support layer peeling, increase of membrane cost, decrease of membrane performance, etc., and achieve membrane water flow The effect of increased yield, simple operation, and mild reaction conditions
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0018] Soak the polysulfone support membrane in a 5% potassium persulfate solution for 2 hours at a reaction temperature of 40°C. After the reaction, the membrane was washed in clean water. Initiator cerium ammonium nitrate, monomer acrylamide and zwitterionic compound 3-(methacrylamido) propyl-dimethyl (3-sulfonic acid) ammonium hydroxide used in surface chemical reaction, and glutaraldehyde according to certain Proportion is made into reaction solution, wherein the concentration of initiator is 2×10 -3 mol / L, the concentration of the reaction monomer acrylamide is 5g / L. The mass ratio of the zwitterionic compound to acrylamide is 0:1, the mass fraction of glutaraldehyde in the reaction solution is 0.3%, and the mass fraction of sodium bisulfite is 0.1%. The washed membrane was soaked in the reaction solution at 40° C. for 4 hours to react. After the reaction is over, the membrane is washed for later use.
[0019] It is measured that the water contact angle of the prepare...
Embodiment 2
[0021] Soak the polysulfone support membrane in a 10% potassium persulfate solution for 2 hours at a reaction temperature of 40°C. After the reaction, the membrane was washed in clean water. Initiator cerium ammonium nitrate, monomer acrylamide and zwitterionic compound 3-(methacrylamido) propyl-dimethyl (3-sulfonic acid) ammonium hydroxide used in surface chemical reaction, and glutaraldehyde according to certain Proportion is made into reaction solution, wherein the concentration of initiator is 2×10 -3 mol / L, the concentration of the reaction monomer acrylamide is 5g / L, the mass ratio of zwitterionic compound and acrylamide is 2:1, and the mass fraction of glutaraldehyde is 1.0%. The washed membrane was soaked in the reaction solution at 20° C. for 4 hours to react. After the reaction is over, the membrane is washed for later use.
[0022] It is measured that the water contact angle of the prepared film is 43°, and the Na with 0.01mol / L 2 SO 4 The water flux of the hyd...
Embodiment 3
[0024] Soak the polysulfone support membrane in a 5% potassium persulfate solution for 2 hours at a reaction temperature of 40°C. After the reaction, the membrane was washed in clean water. Initiator cerium ammonium nitrate, reaction monomer acrylamide and zwitterionic compound 3-(methacrylamido) propyl-dimethyl (3-sulfonic acid) ammonium hydroxide used in surface chemical reaction, and glutaraldehyde according to A certain proportion is made into a reaction solution, in which the concentration of the initiator is 2×10 -3 mol / L, the concentration of the reaction monomer acrylamide is 5g / L, the mass ratio of zwitterionic compound and acrylamide is 6:1, the mass fraction of glutaraldehyde is 1.0%, and the mass fraction of sodium bisulfite is 0.3% . The washed membrane was soaked in the reaction solution at 40° C. for 10 hours to react. After the reaction is over, the membrane is washed for later use.
[0025] It is measured that the water contact angle of the prepared film i...
PUM
Property | Measurement | Unit |
---|---|---|
water contact angle | aaaaa | aaaaa |
water contact angle | aaaaa | aaaaa |
water contact angle | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com