Dynamic Mechanical Analysis (DMA) was performed using a TA Q800 DMA (TA Instruments, New Castle, DE, USA) and was used to verify the glass transition temperature (Tg) of the various SMP formulations [47 (link),48 (link)]. All of the samples were cut into specimens with dimensions of 20 mm × 5 mm × 1 mm for testing. Each sample was equilibrated to 0 °C for 1 min and heated to 100 °C at a rate of 3 °C/min. Testing was conducted at a frequency of 1.0 Hz and cyclic strain control at 0.1% strain.
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