Extrusion & Post
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Poor hydrophilic modification effect of PVDF microporous membranes
Problem Phenomenon
The water flux decays quickly after hydrophilic modification
Cause Analysis
The bonding force between the hydrophilic coating and PVDF is insufficient and the crosslinking is not enough
Solution
Blend hydrophilic polymers, in-situ polymerization
Key Takeaway
The long-term stability of membrane hydrophilic modification is the key
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