Anti-coagulation composite ultrafiltration membrane and preparation method thereof
An ultrafiltration membrane and anti-coagulation technology, which is applied in the field of anti-coagulation composite ultrafiltration membrane and its preparation, can solve the problems of limited source of raw materials, high price, complex process, etc., and achieve stable physical and chemical properties, low cost, and preparation equipment simple effect
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[0021] See figure 1 As shown, the anticoagulant composite ultrafiltration membrane of the present invention comprises a support layer, a polysulfone-based membrane layer and a sulfonated chitosan membrane layer, the polysulfone-based membrane layer is attached to the support layer, and the sulfonated chitosan membrane layer The cross-linking is grafted on the polysulfone-based membrane layer, the thickness of the support layer, the polysulfone-based membrane layer and the sulfonated chitosan membrane layer is 30-100 microns, and the thickness of the sulfonated chitosan membrane layer is 0.01-0.5 Between microns, the viscosity-average molecular weight of this sulfonated chitosan film layer is 30000-300000, and the supporting layer of the present invention is non-woven fabric, or adopts 200-300 mesh screen, and this anticoagulant composite ultrafiltration membrane has good bioactivity, hemocompatibility and anticoagulant properties.
[0022] Sulfonated chitosan of the present i...
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