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首页> 外文期刊>Journal of Applied Polymer Science >Effect of fatigue loading on wicking properties of polyamide 66 nanofiber yarns
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Effect of fatigue loading on wicking properties of polyamide 66 nanofiber yarns

机译：疲劳载荷对聚酰胺66纳米纤维纱线芯吸性能的影响

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摘要

The wicking phenomenon is of prime importance with regards to biomedical applications of nanofiber yarns such as suture yarns and tissue scaffolds. In such applications, the yarns are usually subjected to cyclic tensile forces and biological tensile stresses. There is a lack of science behind the effect of fatigue on wicking properties of nanofiber yarns and this work aims at exploring this venue. Wicking properties of polyamide 66 nanofiber yarns are investigated by tracing the color change in the yarn structure resulting from pH changes during the capillary rise of distilled water. Results show that applying cyclic loading increases equilibrium wicking height in the Lucus-Washburn equation, which is attributed to changes in the overall pore structure in the cyclic loaded yarn. The likely causes of these changes are studied by scanning electron microscope, which reveals disentangled, more or less aligned and parallel nanofibers with a smaller radius in the nanofibrous structure. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47206.
机译：对纳米纤维纱线等缝合纱和组织支架的生物医学应用，芯吸现象具有重要意义。在这种应用中，纱线通常经受循环拉力和生物拉伸应力。缺乏科学背后的疲劳对纳米纤维纱线的污渍特性的影响，而这项工作旨在探索这个场地。通过在蒸馏水的毛细血管升高期间追踪由pH变化引起的纱线结构中的颜色变化来研究聚酰胺66纳米纤维纱的芯吸性能。结果表明，循环加载施加循环加载在岩型釜底方程中的平衡芯吸率增加，这归因于循环负载纱线中总孔结构的变化。通过扫描电子显微镜研究了这些变化的可能原因，该显微镜揭示了纳米纤维结构中具有较小半径的脱屑，或多或少对齐的并平行纳米纤维。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47206。

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