Figure 3. DSC heating traces of i-PS melt-crystallized at 170°C for the different times listed. Each sample quenched to 80°C following crystallization, and stabilized before scanning at 10°C/min. Each trace plotted on the same scale but y-shifted for presentation. Apparent baseline shift around 100 °C is the glass transition.

From

Experiment to Teach Multiple Melting Phenomena in Semicrystalline Polymers Using Differential Scanning Calorimetry

Kathy L. Singfield, Ashley J. Rowe

World Journal of Chemical Education. 2021, 9(3), 68-76 doi:10.12691/wjce-9-3-1