The interfacial load transfer is of paramount importance to the bulk mechanical properties enhancement in nanotube-reinforced nanocomposites. Recent single-nanotube nanomechanical pull-out studies report quantitative interfacial load transfer characteristics of nanotube-matrix interfaces in close-to-ideal interfacial binding configurations. However, the elucidation of the actual interfacial load transfer in bulk nanotube nanocomposites remains a significant challenge due to the presence of many complex and inevitable nanotubes’ conformational nonidealities, such as nanotube misalignment and aggregation/entanglement. Here we quantitatively investigate the interfacial load transfer in electrospun carbon nanotube poly(methyl methacrylate) (PMMA) nanocomposite microfibers by using in situ Raman micromechanical characterization techniques. The micromechanical measurements capture the critical tensile strain in the composite microfiber that initiates collective interfacial slip...

中文翻译：

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通过使用原位拉曼微力学表征技术量化电纺碳纳米管聚合物纳米复合材料微纤维中的界面载荷转移

界面载荷传递对于增强纳米管增强的纳米复合材料的整体机械性能至关重要。最近的单纳米管纳米机械拉拔研究报告了接近理想界面结合构型的纳米管-基质界面的定量界面载荷传递特性。然而，由于存在许多复杂且不可避免的纳米管的构象非理想性，例如纳米管未对准和聚集/缠结，因此阐明本体纳米管纳米复合材料中的实际界面载荷转移仍然是一项重大挑战。在这里，我们使用原位拉曼微机械表征技术定量研究了电纺碳纳米管（甲基丙烯酸甲酯）（PMMA）纳米复合超细纤维中的界面载荷转移。