Fig. 5: Effect of crystallization time on melting temperature.

Porod parameter P and crystal thickness dc of POM130 during stepwise heating after isothermal crystallization at 155 °C for different crystallization times: tc = 0.5 h (black), tc = 5.2 h (red), and tc = 85 h (blue). The arrows indicate the temperature range between the crystallization temperature and the temperature at which melting sets in as indicated by the decreasing values of P for the different values of tc. Source data are provided as a Source Data file.