The present paper describes the addition of nitroxide‐functionalized graphene oxide (GOFT) into polyamide 6 (PA6) micro‐ and nanofibers, which are obtained through electrospinning. Scanning electron microscopy micrographs demonstrate the presence of fibers. Tensile testing presents an unexpected and non‐obvious behavior, in which the Young's modulus, tensile strength, and elongation simultaneously and remarkably increase compared to the pristine polymer nanofibers. GOFT induces the hydrogen bonding between the NH group from PA6 with the functional groups, thus promoting higher crystallinity of the polymer matrix. Nonetheless, deconvoluted curves by differential scanning calorimetry reveal the presence of two quasi‐steady polymorphs (β and δ phases) contributing to 46% of the total crystallinity. This evidence suggests that their presence and high ratios are responsible for the unexpected and simultaneous enhancement of tensile properties.

中文翻译：

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α，γ和亚稳多晶型物在电纺聚酰胺6 /功能化氧化石墨烯上的作用。

本白皮书介绍了在聚酰胺6（PA6）微纤维和纳米纤维中添加氮氧化物官能化的氧化石墨烯（GOFT），这些纤维是通过电纺丝获得的。扫描电子显微镜显微照片证明了纤维的存在。拉伸测试表现出出乎意料且非显而易见的行为，与原始聚合物纳米纤维相比，杨氏模量，拉伸强度和伸长率同时显着提高。GOFT诱导了PA6的NH基团与官能团之间的氢键结合，从而促进了聚合物基质的更高结晶度。尽管如此，通过差示扫描量热法反卷积的曲线显示出存在两种准稳态多晶型物（β和δ相），占总结晶度的46％。