A kind of high-performance reverse osmosis composite membrane and preparation method thereof
A reverse osmosis composite membrane, high-performance technology, applied in the field of high-performance reverse osmosis composite membrane and its preparation, can solve the problems of difficult synthesis process, complex chemical structure, difficult to obtain, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] Preparation of polyvinyl alcohol grafted zwitterionic copolymer: in 100ml of 10% polyvinyl alcohol aqueous solution, add mass fraction and account for 1% tryptophan, under nitrogen protection conditions, add 0.05mol of DCC (dicyclohexylcarbodiethylene Amine) was used as a redox catalyst, reacted at a temperature of 40°C for 1h, the product was precipitated and washed with methanol, and the obtained solid was dried in an oven at 60°C for 1h to obtain a polyvinyl alcohol grafted zwitterionic copolymer.
[0036] Preparation of polybasic acid chloride: 0.15mol of trichloromethyl carbonate and 0.15mol of Place in a four-necked bottle, add 150ml of ether and stir until dissolved. 1 g of sodium methoxide was added dropwise to the reaction system through a constant pressure separatory funnel, and reacted for 1 h at 0°C. After the reaction finished, the reactant was distilled to remove low-boiling substances; the DMF and 50ml of normal hexane added to the gained reactant were ...
Embodiment 2
[0043] Preparation of polyvinyl alcohol grafted zwitterionic copolymer: in 100ml of 10% polyvinyl alcohol aqueous solution, add mass fraction and account for 20% glutamic acid, under nitrogen protection conditions, add 0.05mol of DCC (dicyclohexylcarbodiethylene Amine) was used as a redox catalyst, reacted at 40°C for 6h, the product was precipitated and washed with methanol, and the obtained solid was dried in an oven at 60°C for 12h to obtain a polyvinyl alcohol grafted zwitterionic copolymer.
[0044] Preparation of polybasic acid chloride: 0.23mol of trichloromethyl carbonate and 0.23mol of Place in a four-necked bottle, add 150ml of acetone and stir until dissolved. 3 g of diethylamine was added dropwise to the reaction system through a constant pressure separatory funnel, and reacted for 15 h at 10° C. After the reaction finished, the reactant was distilled to remove low-boiling substances; in the gained reactant, the DMF of 75ml and the normal hexane of 75ml were adde...
Embodiment 3
[0051] Preparation of polyvinyl alcohol graft zwitterionic copolymer: in the 10% polyvinyl alcohol aqueous solution of 100ml, add the glycine and 16% lysine that mass fraction accounts for 24%, under nitrogen protection condition, add the DCC of 0.05mol (bicyclic Hexylcarbodiimide) was used as a redox catalyst, reacted at a temperature of 40°C for 12h, the product was precipitated and washed with methanol, and the obtained solid was dried in an oven at 60°C for 24h to obtain polyvinyl alcohol grafted zwitterions copolymer.
[0052] Preparation of polybasic acid chloride: 0.3mol of trichloromethyl carbonate and 0.3mol of Place in a four-necked bottle, add 50ml of isopropanol and 100ml of dichloroethane and stir until dissolved. 5 g of 3-methylpyridine was added dropwise to the reaction system through a constant pressure separatory funnel, and reacted for 30 h at 20° C. After the reaction finished, the reactant was distilled to remove low-boiling substances; in the gained rea...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More