화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2017년 봄 (04/05 ~ 04/07, 대전컨벤션센터)
권호 42권 1호
발표분야 대학원생 구두발표 (발표15분)
제목 Biodegradable polymeric vascular stents with high tensile and compressive strength: A novel strategy for applying monofilament
초록 Although monofilaments have been commonly used in industries, most are non-biodegradable, which is unfavorable for biomedical applications. Although biodegradable polymers offer benefit, they are still limited by their weak properties. A novel solid-state drawing (SSD) process has been designed to highly improve mechanical properties of both PA and PLLA monofilaments in this study. The monofilaments exhibit increased tensile strength and also, SSD can not only promote α-crystal, but also smoothen the surface. To apply SSD-monofilaments with superior properties to vascular stents, a shaped-annealing (SA) process has been designed as the follow-up process after SSD. Using this process, vascular stents composed of SSD-monofilaments can be fabricated. It is confirmed that spring-shaped stents have good recovery and high strength. In conclusion, this study shows improved mechanical properties of both tensile and compressive strength simultaneously and potential for biomedical applications.
저자 임승혁1, 정영미2, 김수현2
소속 1고려대, 2한국과학기술(연)
키워드 Biodegradable vascular stents; solid-state drawing; shaped-annealing process; monofilament
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