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. 2020 Oct 19;21(20):7745. doi: 10.3390/ijms21207745

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Schematic representation of the constitution of the volume, at isobaric condition. $V_{i}$ interstitial volume; $V_{f}$ free volume; $V_{l}$ total volume of the liquid; $V_{c}$ volume of the crystal; $V_{W}$ Van der Walls volume; $V_{o c c}$ occupied volume; $T_{g}$ glass transition temperature; $T_{c}$ —crystallization temperature; $T_{m}$ Melting temperature. Adapted from references [3,82].