Graphene and graphene derivatives are among the extensively studied materials as multifunctional reinforcement for polymeric materials. This is due to their relative ease of synthesis, interface engineering and wide range of property tailoring. In this study, we present a novel method for the fabrication of aligned graphene oxide/polyvinylidene fluoride (GO/PVDF) nanocomposite inspired by nacre-like materials. The process is based on the electrospinning of GO/PVDF solution on a rotating collecting drum to produce aligned fiber mats. The GO particles are forced to align in the direction of the fibers axis through the induced shear forces and the electric field resulting from the electrospinning process. Layered films can then be produced by successive folding and hot pressing. Microstructural analysis showed that the GO particles are well distributed and aligned with respect to the fiber axis. Mechanical testing showed enhancement in modulus and strength up to 0.3 wt%. However, fracture strain increased at 0.1 wt% and then decreased gradually for 0.2 and 0.3 wt%. Finite element modeling revealed the activation of crack deflection and excessive plastic deformation for 0.1 wt%, while cracks tend for coalesce forming a fracture plane and brittle fracture with further increase of GO content.

石墨烯和石墨烯衍生物是作为聚合物材料的多功能增强材料而广泛研究的材料。这是由于它们相对容易综合，界面工程和广泛的属性定制。在这项研究中，我们提出了一种新的方法，用于制备类似珍珠母质材料的取向氧化石墨烯/聚偏二氟乙烯（GO / PVDF）纳米复合材料。该过程基于GO / PVDF溶液在旋转收集鼓上的静电纺丝，以生产对齐的纤维垫。通过感应的剪切力和电纺丝过程产生的电场，GO颗粒被迫沿纤维轴方向排列。然后可以通过连续折叠和热压来生产层状膜。微观结构分析表明，GO颗粒分布均匀，并相对于纤维轴排列。机械测试表明，模量和强度提高了0.3wt％。但是，断裂应变在0.1 wt％时增加，然后在0.2和0.3 wt％时逐渐减小。有限元模拟显示，裂纹偏转的激活和塑性变形量超过0.1 wt％，而裂纹趋于聚结形成断裂平面和脆性断裂，而GO含量进一步增加。