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Issue Date: 10-Feb-2016
Authors: Mannino, Salvatore
Title: Electrospun nanofibres for multifunctional composites
Abstract: Electrospun veils from copolyethersulfones (coPES) were prepared as soluble interlaminar membranes for carbon fiber/epoxy composites. Dissolution trials were carried out to understand the curing cycle. Dry carbon fabrics were covered with electrospun veils and then infused with an unmodified epoxy resin to prepare reinforced laminates. Unreinforced samples with no carbon fabrics were also studied. The coPES9k veils showed full solubility and homogenous morphology. Unreinforced samples, modified by coPES9k veils, showed only minor morphological differences compared to epoxy/coPES blends obtained from coPES9k powder predissolution. The coPES20k veils showed undissolved fibers and inhomogeneous morphologies when blended with an epoxy in the unreinforced samples. Industrial upscaling of the electospinning process was achieved with commercial polyethersulfones provided by Solvay. The veil-toughening concept was demonstrated by increases in the fracture toughness values obtained with respect to unmodified resins. Also nanofilled-fibers were produced and applied as interlaminar toughening veils. The use of nanofibers as carriers for nanofillers was demonstrated by SEM, EDX and TEM analysis.
Appears in Collections:Area 09 - Ingegneria industriale e dell'informazione

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MNNSVT87E23C351A-Tesi dottorato Salvatore Mannino (online).pdfPhD Thesis Salvatore Mannino "Electrospun nanofibres for multifunctional composites"12,58 MBAdobe PDFView/Open

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