Multiscale-reinforced polymers offer enhanced functionality due to the three different scales that are incorporated; microfiber, nanofiber, and nanoparticle. This work aims to investigate the applicability of different polymer-based nanofabrics, fabricated via electrospinning as reinforcement interlayers for multilayer-fiber-reinforced polymer composites. Three different polymers are examined; polyamide 6, polyacrylonitrile, and polyvinylidene fluoride, both plain and doped with multiwalled carbon nanotubes (MWCNTs). The effect of nanotube concentration on the properties of the resulting nanofabrics is also examined. Nine different nanofabric systems are prepared. The stress–strain behavior of the different nanofabric systems, which are eventually used as reinforcement interlayers, is investigated to assess the enhancement of the mechanical properties and to evaluate their potential as interlayer reinforcements. Scanning electron microscopy is employed to visualize the morphology and microstructure of the electrospun nanofabrics. The thermal behavior of the nanofabrics is investigated via differential scanning calorimetry to elucidate the glass and melting point of the nanofabrics, which can be used to identify optimum processing parameters at composite level. Introduction of MWCNTs appears to augment the mechanical response of the polymer nanofabrics. Examination of the mechanical performance of these interlayer reinforcements after heat treatment above the glass transition temperature reveals that morphological and microstructural changes can promote further enhancement of the mechanical response.

多尺度增强的聚合物由于结合了三种不同的尺度而提供了增强的功能。超细纤维，纳米纤维和纳米颗粒。这项工作旨在研究通过静电纺丝作为多层纤维增强聚合物复合材料的增强中间层而制成的不同聚合物基纳米织物的适用性。检查了三种不同的聚合物；聚酰胺6，聚丙烯腈和聚偏二氟乙烯，无论是普通的还是掺杂有多壁碳纳米管（MWCNT）的。还检查了纳米管浓度对所得纳米织物性能的影响。制备了九种不同的纳米织物系统。不同纳米织物系统的应力-应变行为，最终被用作增强夹层，进行了研究，以评估机械性能的增强并评估其作为夹层增强材料的潜力。扫描电子显微镜用于可视化电纺纳米织物的形态和微观结构。通过差示扫描量热法研究了纳米织物的热行为，以阐明纳米织物的玻璃和熔点，可用于确定复合材料水平上的最佳工艺参数。MWCNT的引入似乎增强了聚合物纳米织物的机械响应。在高于玻璃化转变温度的条件下进行热处理后，对这些夹层增强材料的机械性能进行检查后发现，形态和微观结构的变化可促进机械响应的进一步增强。