Manufacturing of Filament for 4D Printing through Polyether-Type TPU/PLA Blend

Table 2

Microscope and SEM micrographs of TPU/PLA blend filaments.

Ratio of TPU/PLA; item		5 : 5	7 : 3	9 : 1
Microscope	Surface section
	Cross-section
SEM; (×750)	Cross-section
	Cross-section; (partially removed TPU)