Collective Motions and Mechanical Response of a Bulk of Single-Chain Nano-Particles Synthesized by Click-Chemistry
dc.contributor.author | Maiz, Jon | |
dc.contributor.author | Verde Sesto, Ester | |
dc.contributor.author | Asenjo Sanz, Isabel | |
dc.contributor.author | Fouquet, Peter | |
dc.contributor.author | Porcar, Lionel | |
dc.contributor.author | Pomposo Alonso, José Adolfo | |
dc.contributor.author | Malo de Molina, Paula | |
dc.contributor.author | Arbe Méndez, María Aranzazu | |
dc.contributor.author | Colmenero de León, Juan | |
dc.date.accessioned | 2021-01-13T12:59:37Z | |
dc.date.available | 2021-01-13T12:59:37Z | |
dc.date.issued | 2020-12-25 | |
dc.identifier.citation | Polymers 13(1) : (2020) // Article ID 50 | es_ES |
dc.identifier.issn | 2073-4360 | |
dc.identifier.uri | http://hdl.handle.net/10810/49744 | |
dc.description.abstract | We investigate the effect of intra-molecular cross-links on the properties of polymer bulks. To do this, we apply a combination of thermal, rheological, diffraction, and neutron spin echo experiments covering the inter-molecular as well as the intermediate length scales to melts of single-chain nano-particles (SCNPs) obtained through ‘click’ chemistry. The comparison with the results obtained in a bulk of the corresponding linear precursor chains (prior to intra-molecular reaction) and in a bulk of SCNPs obtained through azide photodecomposition process shows that internal cross-links do not influence the average inter-molecular distances in the melt, but have a profound impact at intermediate length scales. This manifests in the structure, through the emergence of heterogeneities at nanometric scale, and also in the dynamics, leading to a more complex relaxation behavior including processes that allow relaxation of the internal domains. The influence of the nature of the internal bonds is reflected in the structural relaxation that is slowed down if bulky cross-linking agents are used. We also found that any residual amount of cross-links is critical for the rheological behavior, which can vary from an almost entanglement-free polymer bulk to a gel. The presence of such inter-molecular cross-links additionally hinders the decay of density fluctuations at intermediate length scales. | es_ES |
dc.description.sponsorship | This research was funded by the Basque Government, code: IT-1175-19 and the Ministerio de Economía y Competitividad code: PGC2018-094548-B-I00 (MCIU/AEI/FEDER, UE). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation | info:eu-repo/grantAgreement/MCIU/ PGC2018-094548-B-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 | single-chain nano-particles | es_ES |
dc.subject | polymer melts | es_ES |
dc.subject | intra-molecular cross-links | es_ES |
dc.subject | dynamic structure factor | es_ES |
dc.subject | rheology | es_ES |
dc.title | Collective Motions and Mechanical Response of a Bulk of Single-Chain Nano-Particles Synthesized by Click-Chemistry | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2021-01-08T14:44:20Z | |
dc.rights.holder | 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/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/2073-4360/13/1/50/htm | es_ES |
dc.identifier.doi | 10.3390/polym13010050 | |
dc.departamentoes | Ciencia y tecnología de polímeros | |
dc.departamentoes | Física de materiales | |
dc.departamentoeu | Polimeroen zientzia eta teknologia | |
dc.departamentoeu | Materialen fisika |
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Except where otherwise noted, this item's license is described as 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/).