RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Effect of Wall Structures on Mechanical Properties of Small Caliber PHBHHx Vascular Grafts

        Jing Gao,Zhenzhen Huang,Huiwen Guo,Shunzhu Tian,Lu Wang,Yuling Li 한국섬유공학회 2019 Fibers and polymers Vol.20 No.11

        In order to analyze the effect of vascular wall structures on static and dynamic mechanical properties of vasculargrafts, small calibre PHBHHx (Poly(3-hydroxybutyrate-co-3-hydroxhexanoate)) vascular grafts (inner diameter 6 mm) withvarious wall shapes and thicknesses were fabricated by changing electrospinning time and receiving molds. As spinning timeincreased, wall thickness of the vascular grafts increased and both circumferential tensile strength and suture retentionstrength improved significantly. When the wall thicknesses of straight grafts were about 120 μm, the great radial dynamiccompliance was exhibited, however, the tensile strength and suture retention strength of the straight tubes can’t reach therequirements of normal blood vessel grafting. With the wall thicknesses increasing above 250 μm, although thecircumferential tensile strength and suture retention strength gradually achieved the transplanting requirements, the dynamiccompliance of the straight tubes declined too sharply to adapt the blood radial shock. For corrugated grafts, the effect of wallthickness on radial dynamic compliance was little, and the radial dynamic compliance was close to that of the commercialvascular grafts. The circumferential tensile strength and suture retention strength of the corrugated grafts were also improvedto approach the commercial vessels’ performances with the wall thickness improving to about 425 μm. Elastic recovery ratesof all the prepared vascular grafts were superior to that of the commercial sample. Along with the wall thickness exceeding250 μm, the water permeabilities of both the straight and the corrugated grafts were less than 300 ml/(cm2·min).

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼