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dc.contributor.authorNieto Simavilla, David 
dc.contributor.authorHuang, Weide .
dc.contributor.authorHousmans, Caroline
dc.contributor.authorVandestrick, Philippe .
dc.contributor.authorRyckaerts, Jean-Paul .
dc.contributor.authorSferrazza, Michele .
dc.contributor.authorNapolitano, Simone .
dc.date.accessioned2018-10-15T11:37:06Z
dc.date.available2018-10-15T11:37:06Z
dc.date.issued2018
dc.identifier.urihttp://hdl.handle.net/10259/4971
dc.descriptionTrabajo presentado en: 10th Conference on Boroadband Dielectric Spectroscopy and its Applications, Bruselas, 26 a 31 de agosto de 2018
dc.description.abstractIrreversibly adsorbed polymer layers represent an intriguing class of novel nanomaterials with unexpected properties, strongly deviating from what observed in unbounded polymer melts. These extremely thin layers (thickness < few tens of nanometers) are obtained via a small number of successive steps, easily reproducible in a laboratory environment: a polymer melt is placed in contact with an adsorbing substrate and nonadsorbed chains are washed away by soaking the sample in a good solvent. Importantly, tuning the thickness of the adsorbed layer, an operational parameter equivalent to the number of chains adsorbed on a unit surface, allows modifying the performance of polymer coatings without affecting the interfacial chemistry [1]. Here, we discuss on the physics behind the formation of irreversibly adsorbed layers onto solid substrate [2,3], highlighting the differences between measurements performed via dielectric spectroscopy and those via ellipsometry or atomic force microscopy. By analyzing the outcome of experiments and simulations, we show how changes in thermal energy and interaction potential affect the equilibrium and the nonequilibrium components of the kinetics. We identify a universal linear relation between the growth rates at short and long adsorption times, suggesting that the monomer pinning mechanism is independent of surface coverage, while the progressive limitation of free sites significantly limits the adsorption rate. We show that the equilibrium adsorbed amount is given by thermodynamics and depends on the interface interaction only (i.e. it is temperature independent in experiments). Importantly, in neat disagreement with current ideas on surface science, the equilibrium adsorbed amount – and, hence, interfacial interaction potential – is affected by nanoconfimenent [4].en
dc.description.sponsorshipMolecular to Continuum Investigation of Anisotropic Thermal Transport in Polymers “MCIATTP” Project # 750985en
dc.description.sponsorshipHorizon 2020, “MCIATTP” Project # 750985
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.subject.otherResistencia de materialeses
dc.subject.otherStrength of materialsen
dc.titleKinetics of irreversible adsorption: thermodynamics versus molecular mobilityen
dc.typeinfo:eu-repo/semantics/conferenceObject
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/750985


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