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Wickramasingha, Y. Athulya
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Topics
Publications (4/4 displayed)
- 2024Exploring Inverse Vulcanized Dicyclopentadiene As a Polymer Matrix for Carbon Fiber Compositescitations
- 2022Surface modification of carbon fiber as a protective strategy against thermal degradationcitations
- 2021A comparison of compression molded and additively manufactured short carbon fiber reinforced polyamide‐6 samples and the effect of different infill printing patternscitations
- 2021Improving the effects of plasma polymerization on carbon fiber using a surface modification pretreatmentcitations
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article
Surface modification of carbon fiber as a protective strategy against thermal degradation
Abstract
<p>Carbon fibers were surface modified with acrylate-derived polymers with aromatic side chains, to protect the fiber when exposed to high temperatures. The surface modification process induced a significant increase in tensile strength (23.7%) and tensile modulus (8%), for the benzyl-bearing side chain and retained superior tensile strength (20%) and tensile modulus (7%) after heating to 600 °C. Commercial carbon fibres gave a significant decrease in tensile strength and modulus, 7% and 4%, respectively, when exposed to the same conditions. This suggests that the surface modification process provides a protective effect against thermal degradation, with possible application in carbon fibre recycling. The interfacial shear strength (IFSS) showed significant improvement before (up to 208%) and after (up to 84%) exposure to high temperatures. Analysis of the carbon fiber surface by XPS suggests that the surface bound polymer becomes more graphitic, potentially via the fusion of the aromatic side chains.</p>