High-hydrophilic polysulfone ultrafiltration membrane and preparation method thereof

According to the invention, low-content PSf-b-PEG is adopted as an amphiphilic block copolymer, high-content PEG and a polysulfone film-forming material are blended together, and a PEG chain segment in the PSf-b-PEG is thermally crosslinked with PEG by thermal crosslinking, so that the high hydrophi...

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Bibliographic Details
Main Authors ZHOU LANFENG, XU YELONG, WEN HAIMENG, LI SHENGLAN
Format Patent
LanguageChinese
English
Published 24.05.2022
Subjects
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:According to the invention, low-content PSf-b-PEG is adopted as an amphiphilic block copolymer, high-content PEG and a polysulfone film-forming material are blended together, and a PEG chain segment in the PSf-b-PEG is thermally crosslinked with PEG by thermal crosslinking, so that the high hydrophilicity of the block copolymer polysulfone blended membrane is maintained and improved, and the preparation cost of the membrane is remarkably reduced. 本发明采用低含量的PSf-b-PEG作为双亲嵌段共聚物辅以高含量的PEG与聚砜成膜材料共混，并利用热交联实现将PSf-b-PEG中的PEG链段与PEG热交联，从而实现维持并提升嵌段共聚物聚砜共混膜的高亲水性，并显著降低了膜制备成本。
Bibliography:Application Number: CN202210184137