FABRICATION AND CHARACTERIZATION OF ELECTROSPUN FUNCTIONALIZED CNT–PVDF NANOFIBERS FOR ARTIFICIAL BASILAR MEMBRANE DESIGN

Abstract

Electrospinning of nanofibers using polymer–nanoparticle blends offers a versatile route for developing functional biomaterials. In this work, polyvinylidene fluoride (PVDF) nanofibers doped with carbon nanotubes (CNTs) were electrospun to enhance β-phase formation and piezoelectric response for artificial basilar membrane applications. The morphology and phase composition of the electrospun fibers were examined using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The SEM images revealed uniform, bead-free fibers with diameters ranging from 35 to 180 nm, while XRD confirmed a dominant β-phase peak at 2θ ≈ 20°. The incorporation of CNTs improved electrical conductivity and facilitated chain alignment, resulting in enhanced crystallinity and voltage output. The fabricated PVDF/CNT nanofibers demonstrate strong potential for bio-inspired cochlear implant membranes owing to their piezoelectric sensitivity, flexibility, and biocompatibility.