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Article

Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis

Beijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, China
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Authors to whom correspondence should be addressed.
Academic Editors: Célio Bruno Pinto Fernandes, Salah Aldin Faroughi, Luís L. Ferrás and Alexandre M. Afonso
Polymers 2021, 13(21), 3713; https://doi.org/10.3390/polym13213713
Received: 29 September 2021 / Revised: 15 October 2021 / Accepted: 21 October 2021 / Published: 27 October 2021
(This article belongs to the Special Issue Advanced Polymer Simulation and Processing)
The non-isothermal crystallization behaviors of poly (ethylene glycol) (PEG) and poly (ethylene glycol)-b-poly(ε-caprolactone) (PEG-PCL) were investigated through a commercially available chip-calorimeter Flash DSC2+. The non-isothermal crystallization data under different cooling rates were analyzed by the Ozawa model, modified Avrami model, and Mo model. The results of the non-isothermal crystallization showed that the PCL block crystallized first, followed by the crystallization of the PEG block when the cooling rate was 50–200 K/s. However, only the PEG block can crystallize when the cooling rate is 300–600 K/s. The crystallization of PEG-PCL is completely inhibited when the cooling rate is 1000 K/s. The modified Avrami and Ozawa models were found to describe the non-isothermal crystallization processes well. The growth methods of PEG and PEG-PCL are both three-dimensional spherulitic growth. The Mo model shows that the crystallization rate of PEG is greater than that of PEG-PCL. View Full-Text
Keywords: PEG-PCL; non-isothermal crystallization; flash differential scanning calorimeter PEG-PCL; non-isothermal crystallization; flash differential scanning calorimeter
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MDPI and ACS Style

Li, X.; Zou, M.; Lei, L.; Xi, L. Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis. Polymers 2021, 13, 3713. https://doi.org/10.3390/polym13213713

AMA Style

Li X, Zou M, Lei L, Xi L. Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis. Polymers. 2021; 13(21):3713. https://doi.org/10.3390/polym13213713

Chicago/Turabian Style

Li, Xiaodong, Meishuai Zou, Lisha Lei, and Longhao Xi. 2021. "Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis" Polymers 13, no. 21: 3713. https://doi.org/10.3390/polym13213713

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