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Mechano‐active scaffold design of small‐diameter artificial graft made of electrospun segmented polyurethane fabrics
Author(s) -
Matsuda Takehisa,
Ihara Maki,
Inoguchi Hiroyuki,
Kwon Il Keun,
Takamizawa Keiichi,
Kidoaki Satoru
Publication year - 2005
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.30260
Subject(s) - mandrel , materials science , composite material , polyurethane , rotational speed , electrospinning , elastomer , fabrication , polymer , mechanical engineering , medicine , engineering , alternative medicine , pathology
To fabricate a “mechano‐active” tubular scaffold of nonwoven mesh‐type small‐diameter artificial graft made of the synthetic durable elastomer, segmented polyurethane, the fabrication technique of electrospinning on a mandrel under a high rotation speed and transverse movement was used. Emphasis was placed on how the rotation speed of the mandrel and the fusion or welding states of fibers at contact points affect the compliance (ease of intraluminal pressure‐dependent circumferential inflation) and Young's modulus determined by uniaxial stretching in the longitudinal and circumferential directions. The results showed that a high rotation speed is attributed to exhibit isotropic mechanical properties in the entire range of applied strain but reduces the compliance, and a high fusion state, which is produced using a mixed solvent with a high content of high‐boiling‐point solvent, reduces the compliance but is expected to exhibit high durability in a continuously loaded pulsatile stress field in an arterial circulatory system. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res 73A: 125–131, 2005