dc.contributor.author | Monnier, Xavier | |
dc.contributor.author | Napolitano, Simone | |
dc.contributor.author | Cangialosi, Daniele | |
dc.date.accessioned | 2021-05-11T07:42:42Z | |
dc.date.available | 2021-05-11T07:42:42Z | |
dc.date.issued | 2020-08-28 | |
dc.identifier.citation | Nature Communications 11(1) : (2020) // Article ID 4354 | es_ES |
dc.identifier.issn | 2041-1723 | |
dc.identifier.uri | http://hdl.handle.net/10810/51342 | |
dc.description.abstract | Tuning the thermodynamic state of a material has a tremendous impact on its performance. In the case of polymers placed in proximity of a solid wall, this is possible by annealing above the glass transition temperature, T-g, which induces the formation of an adsorbed layer. Whether heating to higher temperatures would result in desorption, thereby reverting the thermodynamic state of the interface, has so far remained elusive, due to the interference of degradation. Here, we employ fast scanning calorimetry, allowing to investigate the thermodynamics of the interface while heating at 10(4) K s(-1). We show that applying such rate to adsorbed polymer layers permits avoiding degradation and, therefore, we provide clear-cut evidence of desorption of a polymer melt. We found that the enthalpy and temperature of desorption are independent of the annealing temperature, which, in analogy to crystallization/melting, indicates that adsorption/desorption is a first order thermodynamic transition | es_ES |
dc.description.sponsorship | We thank Sanat K. Kumar and Luis G. MacDowell for a fruitful discussion on the physics of adsorption. D.C. acknowledges financial support from the project PGC2018-094548B-I00 (MICINN-Spain and FEDER-UE) and the project IT-1175-19 (Basque Government). S.N. acknowledges financial supports from the Action Concertee Recherche-ULB under project SADI and the Fonds de la Recherche Scientifique FNRS under Grant EXOTICAGE | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Nature | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/PGC2018-094548B-I00 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | glass-transition | es_ES |
dc.subject | adsorption | es_ES |
dc.subject | kinetics | es_ES |
dc.subject | layers | es_ES |
dc.title | Direct Observation of Desorption of a Melt of Long Polymer Chains | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0) | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://www.nature.com/articles/s41467-020-18216-y | es_ES |
dc.identifier.doi | 10.1038/s41467-020-18216-y | |
dc.departamentoes | Física de materiales | es_ES |
dc.departamentoeu | Materialen fisika | es_ES |