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Fabrication and Characterization of Modified Graphene Oxide/PAN Hybrid Nanofiber Membrane

机译：氧化石墨烯/ PAN杂化纳米纤维膜的制备与表征

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摘要

In this study, a series of novel modified graphene oxide (MGO)/polyacrylonitrile (PAN) hybrid nanofiber membranes were fabricated by electrospinning a PAN solution containing up to 1.0 wt.% MGO. The GO was initially prepared by a time-saving improved Hummer’s method. Subsequently, the formation of GO was confirmed by scanning electron microscopy (SEM), AFM, Fourier-transform infrared spectroscopy (FT–IR), and Raman spectroscopy. This study also prepared the modified GO with polydiallyldimethylammonium chloride (GP) by using a simple surface post-treatment method to improve its dispersion. Varying amounts of GP were incorporated into PAN nanofibers for the better properties of GP/PAN nanofibers, such as hydrophilicity, mechanical properties, and so on. The resulting GP/PAN hybrid nanofiber membranes were characterized by SEM, FTIR, contact angle, and thermal and mechanical properties. These results showed that the hydrophilic and mechanical properties of GP/PAN hybrid nanofiber membranes were dramatically improved, i.e., 50% improvement for hydrophilicity and 3–4 times higher strength for mechanical property, which indicated the possibility for water treatment application. In addition, the notably improved thermal stability results showed that the hybrid nanofiber membranes could also be a potential candidate for the secondary battery separator.
机译：在这项研究中，通过静电纺丝含有高达1.0 wt。％MGO的PAN溶液，制造了一系列新型的改性氧化石墨烯（MGO）/聚丙烯腈（PAN）杂化纳米纤维膜。 GO最初是通过节省时间的改良悍马方法制备的。随后，通过扫描电子显微镜（SEM），原子力显微镜（AFM），傅立叶变换红外光谱（FT-IR）和拉曼光谱确认了GO的形成。这项研究还通过使用简单的表面后处理方法以改善其分散性，用聚二烯丙基二甲基氯化铵（GP）制备了改性GO。为了使GP / PAN纳米纤维具有更好的性能，例如亲水性，机械性能等，将不同数量的GP掺入PAN纳米纤维中。所得的GP / PAN杂化纳米纤维膜通过SEM，FTIR，接触角以及热和机械性能表征。这些结果表明，GP / PAN杂化纳米纤维膜的亲水性和机械性能得到了显着改善，即亲水性提高了50％，机械性能提高了3-4倍，这表明可以进行水处理。此外，显着改善的热稳定性结果表明，杂化纳米纤维膜也可能成为二次电池隔膜的潜在候选者。

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