Sulfonated side phenyl phthalazinone copolyether sulfone hollow fiber membrane as well as preparation method and application thereof
By adding inorganic salts and small organic molecule additives to the spinning solution, sulfonated side-phenylenediamine biphenyl copolyethersulfone hollow fiber membranes were prepared, solving the problem of high cost of existing membrane materials and achieving high water vapor permeability and selectivity at low cost, which is suitable for medical gas dehumidification and other fields.
Patent Information
- Application Number
- CN202610600366.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
While existing membrane materials offer high water vapor permeation selectivity in the field of air dehumidification, their high cost limits their widespread application in industrial and residential dehumidification.
Sulfonated side-phenyl naphthalene biphenyl copolyether sulfone hollow fiber membranes are used. By adding inorganic salts and small organic molecule additives to the spinning solution, a dense selective layer and a porous support layer structure are formed, which improves water vapor permeability and water vapor/nitrogen selectivity, and reduces costs.
It achieves high water vapor permeability and water vapor/nitrogen selectivity at low cost, making it suitable for fields such as medical gas dehumidification. It also has good hydrophilicity, thermal stability and mechanical properties, making it suitable for large-scale application.