This invention relates to the field of biomedical
polymer materials technology, specifically to a polyethersulfone-based material with
blood purification and anticoagulation functions, its preparation method, and its applications. The polyethersulfone-based material uses polyethersulfone as the main component, and a stable multi-
coordination network structure is constructed by introducing
terpyridine ligands and multivalent
metal ions at the
molecular level. Furthermore, the
anticoagulant active molecules
argatroban or
heparin are immobilized on its surface, achieving
selective adsorption of blood toxins and synergistic regulation of the anticoagulation reaction. The material is prepared using a process combining
phase inversion membrane formation technology and surface coordination modification, resulting in a composite interface on the
membrane surface rich in hydrophilic groups and a stable
anticoagulant layer, significantly improving
blood compatibility and
membrane flux stability. This
composite membrane can simultaneously perform purification and anticoagulation functions in
hemodialysis,
hemofiltration, and
extracorporeal circulation systems, exhibiting good
mechanical strength,
chemical stability, and
biosafety. The preparation
route of this invention is simple, the parameters are controllable, and it is suitable for large-scale production.