1 April 2015 Mussel-inspired catecholamine polymers as new sizing agents for fiber-reinforced composites
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Abstract
Mussel-inspired catecholamine polymers (polydopamine and polynorepinephrine) were coated on the surface of carbon and glass fibers in order to increase the interfacial shear strength between fibers and polymer matrix, and consequently the interlaminar shear strength of fiber-reinforced composites. By utilizing adhesive characteristic of the catecholamine polymer, fiber-reinforced composites can become mechanically stronger than conventional composites. Since the catecholamine polymer is easily constructed on the surface by the simultaneous polymerization of its monomer under a weak basic circumstance, it can be readily coated on micro-fibers by a simple dipping process without any complex chemical treatments. Also, catecholamines can increase the surface free energy of micro-fibers and therefore, can give better wettability to epoxy resin. Therefore, catecholamine polymers can be used as versatile and effective surface modifiers for both carbon and glass fibers. Here, catecholamine-coated carbon and glass fibers exhibited higher interfacial shear strength (37 and 27% increases, respectively) and their plain woven composites showed improved interlaminar shear strength (13 and 9% increases, respectively) compared to non-coated fibers and composites.
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Wonoh Lee, Wonoh Lee, Jea Uk Lee, Jea Uk Lee, Joon-Hyung Byun, Joon-Hyung Byun, } "Mussel-inspired catecholamine polymers as new sizing agents for fiber-reinforced composites", Proc. SPIE 9432, Behavior and Mechanics of Multifunctional Materials and Composites 2015, 943216 (1 April 2015); doi: 10.1117/12.2184926; https://doi.org/10.1117/12.2184926
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