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논문 기본 정보

자료유형
학술저널
저자정보
가동헌 (한국과학기술연구원) Lim Chung-Man (Biomedical Research Institute KIST) Jang Yoonsun (Biomedical Research Institute KIST) Son Tae Il (Department of Biotechnology and BET Research Institute Chung-Ang University) Han Dong Keun (CHA University) 정윤기 (한국과학기술연구원)
저널정보
한국조직공학과 재생의학회 조직공학과 재생의학 조직공학과 재생의학 제19권 제1호
발행연도
2022.2
수록면
35 - 47 (13page)
DOI
10.1007/s13770-021-00400-w

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Background To prevent unsolved problems of medical devices, we hypothesized that combinatorial effects of zwitterionic functional group and anti-bacterial metal ions can reduce effectively the thrombosis and bacterial infection of polymeric biomaterials. In this research, we designed a novel series of zwitterionic polyurethane (zPU) additives to impart anti-thrombotic properties to a polyvinyl chloride (PVC) matrix. Methods We have synthesized zPUs by combination of various components and zPUs complexed with metal ions. Zwitterion group was prepared by reaction with 1,3-propane sultone and Nmethyldiethanolamine and metal ions were incorporated into sulfobetaine chains via molecular complexation. These zPU additives were characterized using FT-IR, 1H-NMR, elemental analysis, and thermal analysis. The PVC film blended with zPU additives were prepared by utilizing a solvent casting and hot melting process. Results Water contact angle demonstrated that the introduction of zwitterion group has improved hydrophilicity of polyurethanes dramatically. Protein adsorption test resulted in improved anti-fouling effects dependent on additive concentration and decreases in their effects by metal complexation. Platelet adhesion test revealed anti-fouling effects by additive blending but not significant as compared to protein resistance results. Conclusion With further studies, the synthesized zPUs and zPUs complexed with metal ions are expected to be used as good biomaterials in biomedical fields. Based on our results, we can carefully estimate that the enhanced anti-fouling effect contributed to reduced platelet adhesion.

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