| dc.description.abstract | With the development and advancement of technology, people′s awareness of health has increased, accompanied by rapid progress in medical equipment. Among these advancements, systems with zwitterionic structures have been extensively researched and applied due to their excellent biocompatibility, which is crucial for bioinert materials. In the past, the preparation of biofouling-resistant membranes required the use of organic solvents, leading to environmental pollution. In addition, government policies advocate for processes related to green initiatives. Therefore, this study adopts a solvent-free membrane treatment method. Through free radical polymerization, three different ratios of Styrene-co-Maleic Anhydride (SMA) copolymers were synthesized, named S25MA25, S50MA50, and S70MA30, respectively. Subsequently, the SMA copolymers were physically mixed with polypropylene (PP) using two different methods, and then uniformly mixed under the shearing force of a twin-screw extruder, followed by hot pressing to form membranes. Additionally, a zwitterionic monomer with an amine end, sulfobetaine 3-dimethylaminopropylamine (DMAPAPS), was synthesized and dissolved in methanol to prepare a modification solution, which was then used to dip the membranes for a ring-opening reaction to obtain surface zwitterionic membranes. This study conducted physicochemical analyses of the SMA copolymers, followed by testing the zwitterionic monomer′s physicochemical properties and analyzing the surface-modified membranes′ physical and chemical properties. Finally, bioinertness tests were performed on the blended membranes. Compared to the PS standard film results, it was found that in the direct blending method, the membranes with a copolymer concentration of 10 PHR exhibited 95.33% anti-fouling ability; in the surface coating blending method, the membranes with the addition of the S50MA50 copolymer exhibited 89.57% anti-fouling ability. | en_US |