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. 2022 Jul 11;10:888267. doi: 10.3389/fbioe.2022.888267

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Copyright © 2022 Han, Li, Sun, Cheng, Zhu, Zhang, Zhang, Wu and Wang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The Properties of PCL powder. (A) SEM image and (B) size distribution of PCL powders; (C) DSC and TGA analysis of PCL powder. The endo- and exothermal heat flow of PCL powders was characterized by heating and cooling from 0°C to 200°C at the rate of 10°C/min. The weight ratio of PCL decomposition started from 0°C to 600°C at the rate of 10°C/min. The stable sintering region (SSR) is indicated from the onset of melting to the onset (1%) of decomposition. (D) Plot of the temperature-dependent specific heat capacity of PCL powders from 0°C to 200°C. (E) Linear fitting of heat capacity with temperature from melting initiation to the melting point. (F) Linear fitting of heat capacity with temperature from the melting point to the recrystallization temperature.