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Fig. 4. SEM micrograph of cryofractured surfaces of the blends: (a) PLLA/15TPU (b) PLLA/15TPU/5PDLA (c) PLLA/15TPU/10PDLA (d) PLLA/15TPU/15PDLA (e) PLLA/15TPU/20PDLA (f) PLLA/15TPU/25PDLA. Ref. 97, copyright 2016. Reproduced with permission from American Chemical Society.