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Dispersibility of different sized graphene oxide sheets and their reinforcement on polyamide 6 fibers

机译：不同尺寸的石墨烯氧化物片的分散性及其对聚酰胺6纤维的增强剂

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摘要

Dispersibility of graphene oxide (GO) as a nano-reinforcer plays a crucial role in polymer-based nanocomposites. However, it is still uncertain whether lateral dimensions of GO could affect their dispersibility in polymer matrix. In this work, crude GO (CGO) was fractionated into large sized GO (LGO), medium sized GO (MGO) and small sized GO (SGO), through in situ polymerization on the fractionated GO (f-GO) surfaces, caprolactam (CPL) was polymerized and polyamide 6 (PA6) grafted GO (g-GO) was prepared, and then PA6/g-GO nanocomposite fibers were prepared through melting spinning. It is obvious that the dispersibility of GO, whatever f-GO or g-GO, increases with the decrease of its size. Particularly, SGO and PA6 grafted SGO (g-SGO) disperse much more uniformly than CGO and the other f-GO and their corresponding g-GO. As a result, PA6/g-SGO nanocomposite (SPA) fiber has outstanding mechanical properties, for example, the strength of the fiber is 5 times more than that of pure PA6 fiber.
机译：石墨烯（GO）作为纳米增强剂的分散性在基于聚合物基纳米复合材料中起着至关重要的作用。然而，仍然不确定横向尺寸是否可能影响它们在聚合物基质中的分散性。在这项工作中，粗GO（CGO）的分馏为大尺寸的GO（LGO），介质中的分馏GO（F-GO）原位聚合表面，己内酰胺尺寸GO（MgO）和小尺寸的GO（SGO），通过（制备聚合，制备聚酰胺6（PA6）嫁接去（G-GO），然后通过熔化旋转制备PA6 / G-GO纳米复合纤维。很明显，无论F-Go还是G-Go，都随着其尺寸的降低而增加，就会随之而来。特别是，SGO和PA6接枝的SGO（G-SGO）分散比CGO更均匀，另一个F-GO和它们相应的G-GO均匀。结果，PA6 / G-Sgo纳米复合材料（SPA）纤维具有出色的机械性能，例如，纤维的强度比纯PA6纤维的强度为5倍。

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  • 来源
    《RSC Advances》 |2017年第89期|共9页
  • 作者

    Zhang Shiyu; Cheng Yao; Xu Weijuan; Li Juan; Sun Jun; Wang Jianjun; Qin Chuanxiang; Dai Lixing;

  • 作者单位

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Suzhou 215123 Jiangsu Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Suzhou 215123 Jiangsu Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Suzhou 215123 Jiangsu Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Suzhou 215123 Jiangsu Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Suzhou 215123 Jiangsu Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Suzhou 215123 Jiangsu Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Suzhou 215123 Jiangsu Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Suzhou 215123 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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