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Nanoscale structural and mechanical characterization of bamboo-like polymer/silicon nanocomposite films

机译：竹状聚合物/硅纳米复合薄膜的纳米结构和力学表征

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摘要

In an attempt to mimic the bamboo's architecture, bamboo-like polymer/silicon nanocomposites were synthesized by rilling silicon nanopores with two conjugated polymers, namely poly(p-phenylene vinylene) (PPV) and its derivative poly(2-methoxy-5-(2 '-ethylhexyloxy)-beta phenylene vinylene) (MEHPPV). The microstructure, elastic modulus, hardness, nanoscratch resistance, and fracture toughness of the bamboo-like polymeranoporous silicon (PS) films were investigated using different functions of an atomic force microscope and nanoindentation techniques. The fracture toughness of MEHPPV- and PPV-filled PS films is 2 and 1.6 times higher than that of PS, respectively, although their elastic modulus and hardness decrease compared to PS. Strengthening and deformation mechanisms are discussed in conjunction with nanocomposite structure, hardness, elastic modulus and nanoscratch resistance.
机译：为了模仿竹子的结构，通过用两种共轭聚合物（聚（对亚苯基亚乙烯基）（PPV）及其衍生物聚（2-甲氧基-5-（ 2'-乙基己氧基）-β亚苯基亚乙烯基）（MEHPPV）。使用原子力显微镜和纳米压痕技术的不同功能，研究了竹样聚合物/纳米多孔硅（PS）薄膜的微观结构，弹性模量，硬度，纳米耐刮擦性和断裂韧性。填充MEHPPV和PPV的PS膜的断裂韧性分别比PS高2倍和1.6倍，尽管它们的弹性模量和硬度均比PS低。结合纳米复合材料的结构，硬度，弹性模量和耐纳米划伤性讨论了强化和变形机理。

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