Williams D F, Zhong S P, Doherty P J
Institute of Medical and Dental Bioengineering, University of Liverpool, UK.
Biomed Mater Eng. 1991;1(2):75-90.
The mechanical properties of a microporous, electrostatically spun poly (ether urethane-urea), used in the construction of arterial prostheses, have been examined, with particular reference to anisotropic, crack initiation processes and preconditioning. The results demonstrate considerable anisotropy in relation to samples derived from circumferential and longitudinal directions of the tube wall structure related to the spinning process. There is also a considerable difference in crack initiation on inner and outer surface of the arterial wall, again related to the processing conditions. The results provide an important contribution to an understanding of structure-property relationships in microporous arterial prosthesis.
用于构建动脉假体的微孔静电纺聚（醚脲）的机械性能已得到研究，特别涉及各向异性、裂纹萌生过程和预处理。结果表明，与纺丝过程相关的管壁结构圆周方向和纵向方向的样品存在相当大的各向异性。动脉壁内外表面的裂纹萌生也存在显著差异，同样与加工条件有关。这些结果为理解微孔动脉假体的结构-性能关系做出了重要贡献。
