| Summary: | 碩士 === 國立中興大學 === 化學工程學系所 === 98 === Two types of waterborne polyurethane (WBPU) were synthesized in this study, including waterborne polyetherurethane (WBPEU) and waterborne polycarbonateurethane (WBPCU). The mechanical properties of WBPCU were further modified by either annealing treatment or addition of silver nanoparticles (AgNPs). WBPEU was found to have higher fracture strength and elongation than WBPCU. The microphase separation of WBPEU was less than that of WBPCU. The oxidation stability, on the other hand, was better for WBPCU. When AgNPs were added to WBPCU at 30 ppm or 60 ppm, the Young’s modulus decreased (more compliant), but the fracture strength remained similar. When WBPCU was annealed at 140, both the fracture strength and elongation increased. Bovine carotid arterial endothelial cells (BEC) showed the higher cellular proliferation and eNOS gene expression when cultured on WBPCU.
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