Abstract
AbstractAtmospheric pressure (AP) plasma treatment, a proven direct and dry means of surface modification, was deployed for the functionalization of carbon nanotube (CNT). AP plasma treatment successfully incorporated the functional groups such as −COOH and ‐NH2 onto the surface of CNT without affecting its crystallinity. Reduction in tube diameter and increased purity through the removal of amorphous carbon were confirmed by transmission electron microscopy (TEM) and Raman analysis. As a result of these surface chemistry and morphological changes induced by AP plasma treatment, the modified CNT‐cyanate ester nanocomposite exhibited enhanced dispersion via reduced van‐der Walls interaction. At optimum concentration of 0.1 wt% loading, the functionalized CNT with its high aspect ratio showed a well wetting behavior with cyanate ester (BADCy) matrix leading to remarkable increase in the mechanical properties like tensile, impact and flexural strengths and thus rendering them for potential aerospace structural applications.
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