Wet electrospinning-aided self-assembly of multifunctional GO-CNT@PCL core-shell nanocomposites with spider leg bioinspired hierarchical architectures. (12th April 2022)

• Record Type: Journal Article
• Authors: Scaffaro, Roberto; Gammino, Michele; Maio, Andrea
• Is Part Of: Composites science and technology. Volume 221(2022)
• Publication Date: 2022-04-12
• Subjects: A. Carbon nanotubes -- A. Graphene and other 2D-materials -- A. Hybrid composites -- B. Multifunctional properties -- E. Electro-spinning; Composite materials -- Periodicals; Composite materials; Fibrous composites; Periodicals; 620.118
• DOI: 10.1016/j.compscitech.2022.109363
• Languages: English
• ISSNs: 0266-3538

Abstract

Abstract: We report a fast route enabling the multiscale design of nanohybrid structures comprising a 3D fibrous network of polycaprolactone (PCL) wrapped by graphene oxide (GO) sheets onto which carbon nanotube (CNT) brushes are anchored. The method relies on electrospinning PCL solutions onto a suspension of GO and CNTs in ethanol. Self-assembly is due to electrostatic wrapping of GO sheets around PCL fibers and π-π stacking between GO and CNTs. Hierarchical architecture and nanopatterned surface allow gathering the starting properties of PCL, GO and CNTs into lightweight (99% porosity) yet robust (1575% stiffness improvement), amphiphilic monoliths that can remove methylene blue and/or methyl orange from stagnant water with ca.100% efficiency. Graphical abstract: Image 1