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(a,b) SEM images of the 3D printed TPU/NC-MWCNT (2.5 wt.%) and TPU/L-MWCNT (2.5 wt.%) fractured surfaces, respectively. (c) TEM images of the TPU/NC-MWCNT (2.5 wt.%) and (d) TPU/L-MWCNT (2.5 wt.%) nanocomposites showing the achieved CNT nanodispersion in the TPU matrix.
