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Zastosuj identyfikator do podlinkowania lub zacytowania tej pozycji: http://hdl.handle.net/20.500.12128/183
Tytuł: Glass-forming tendency of molecular liquids and the strength of the intermolecular attractions
Autor: Koperwas, Kajetan
Adrjanowicz, Karolina
Wojnarowska, Żaneta
Jędrzejowska, Agnieszka
Knapik, Justyna
Paluch, Marian
Słowa kluczowe: Glass-forming; Molecular liquids; Intermolecular attractions
Data wydania: 2016
Źródło: Scientific Reports, Vol. 6 (2016), art. no 36934
Abstrakt: When we cool down a liquid below the melting temperature, it can either crystallize or become supercooled, and then form a disordered solid called glass. Understanding what makes a liquid to crystallize readily in one case and form a stable glass in another is a fundamental problem in science and technology. Here we show that the crystallization/glass-forming tendencies of the molecular liquids might be correlated with the strength of the intermolecular attractions, as determined from the combined experimental and computer simulation studies. We use van der Waals bonded propylene carbonate and its less polar structural analog 3-methyl-cyclopentanone to show that the enhancement of the dipole-dipole forces brings about the better glass-forming ability of the sample when cooling from the melt. Our finding was rationalized by the mismatch between the optimal temperature range for the nucleation and crystal growth, as obtained for a modeled Lennard-Jones system with explicitly enhanced or weakened attractive part of the intermolecular 6-12 potential.
URI: http://hdl.handle.net/20.500.12128/183
DOI: 10.1038/srep36934
ISSN: 2045-2322
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