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首页> 外文期刊>Journal of Applied Polymer Science >Mechanical characterization of high-performance graphene oxide incorporated aligned fibroporous poly(carbonate urethane) membrane for potential biomedical applications
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Mechanical characterization of high-performance graphene oxide incorporated aligned fibroporous poly(carbonate urethane) membrane for potential biomedical applications

机译：高性能氧化石墨烯并列排列的纤维状多孔聚碳酸亚氨酯膜的机械特性，可用于潜在的生物医学应用

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摘要

In this article, we report the development of graphene oxide (GO) reinforced electrospun poly(carbonate urethane) (PCU) nanocomposite membranes intended for biomedical applications. In this study, we aimed to improve the mechanical properties of PCU fibroporous electrospun membranes through fiber alignment and GO incorporation. Membranes with 1, 1.5, and 3% loadings of GO were evaluated for their morphology, mechanical properties, crystallinity, biocompatibility, and hemocompatibitity. The mechanical properties were assessed under both static and dynamic conditions to explore the tensile characteristics and visco-elastic properties. The results show that GO presented a good dispersion and exfoliation in the PCU matrix, contributing to an increase in the mechanical performance. The static mechanical properties indicated a 55% increase in the tensile strength, a 127% increase in toughness for 1.5 wt % GO loading and the achievement of a maximum strength reinforcement efficiency value at the same loading. Crystallinity changes in membranes were examined by X-ray diffraction analysis. In vitro cytotoxicity tests with L-929 fibroblast cells and percentage hemolysis tests with fresh venous blood displayed the membranes to be cytocompatible with acceptable levels of hemolytic characteristics. Accordingly, these results highlight the potential of this mechanically improved composite membrane's application in the biomedical field. (C) 2013 Wiley Periodicals, Inc.
机译：在本文中，我们报告了旨在用于生物医学应用的氧化石墨烯（GO）增强的电纺聚碳酸酯氨基甲酸乙酯（PCU）纳米复合膜的开发。在这项研究中，我们旨在通过纤维排列和GO掺入来改善PCU纤维多孔电纺膜的机械性能。评估GO含量为1、1.5和3％的膜的形态，力学性能，结晶度，生物相容性和血液相容性。在静态和动态条件下都评估了机械性能，以探讨其拉伸特性和粘弹性。结果表明，GO在PCU基质中表现出良好的分散性和剥离性，有助于提高机械性能。静态机械性能表明，对于1.5 wt％的GO负载，拉伸强度提高了55％，韧性提高了127％，并且在相同负载下实现了最大强度增强效率值。通过X射线衍射分析检查膜的结晶度变化。用L-929成纤维细胞进行的体外细胞毒性试验和用新鲜静脉血进行的溶血百分比试验表明，该膜具有一定的溶血特性，且具有细胞相容性。因此，这些结果突出了这种机械改进的复合膜在生物医学领域中的应用潜力。 （C）2013 Wiley期刊公司

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