Why is the second heating peak smaller than the first heating peak? Is this because low crystallization degree of PLLA after nonisothermal crystallization?
I think the cooling rate: 2 ℃ /min is enough for its high-degree crystallization.
Woud you please explain it to me?
1st and second heating rate: 10 ℃ /min
1st cooling rate: 2 ℃ /min