dc.contributor.author | Taverna, María E. | |
dc.contributor.author | Altorbaq, Abdullah S. | |
dc.contributor.author | Kumar, Sanat K. | |
dc.contributor.author | Olmedo Martínez, Jorge L. | |
dc.contributor.author | Busatto, Carlos A. | |
dc.contributor.author | Zubitur Soroa, María Manuela | |
dc.contributor.author | Mugica Iztueta, Miren Agurtzane | |
dc.contributor.author | Nicolau, Veronica V. | |
dc.contributor.author | Estenoz, Diana A. | |
dc.contributor.author | Müller Sánchez, Alejandro Jesús ![ORCID](/themes/Mirage2//images/orcid_16x16.png) | |
dc.date.accessioned | 2022-11-10T17:11:30Z | |
dc.date.available | 2022-11-10T17:11:30Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Macromolecules 55(17) : 7663-7673 (2022) | es_ES |
dc.identifier.issn | 0024-9297 | |
dc.identifier.issn | 1520-5835 | |
dc.identifier.uri | http://hdl.handle.net/10810/58310 | |
dc.description.abstract | The effect of lignin nanoparticles (LNPs) on the crystallization kinetics of poly(ethylene oxide) (PEO) is examined. Lignin from spruce and ionic isolation was used to prepare LNPs with a number-averaged diameter of 85 nm (with a relatively large polydispersity) by an ultrasonication method. PEO-based nanocomposites with four different LNP contents (5, 10, 15, and 20 wt %) were prepared and subject to isothermal and nonisothermal crystallization protocols in a series of experiments. Scanning electron microscopy (SEM) images showed well-dispersed LNPs in the crystallized PEO matrix. The incorporation of LNPs exponentially increases nucleation density at moderate loadings, with this trend apparently saturating at higher loadings. However, the spherulitic growth rate decreases monotonically with LNP loading. This is attributed to the substantial PEO/LNP affinity, which impacts chain diffusion and induces supernucleation effect (with efficiencies in the order of 200%), but leads to slower growth rates. The overall crystallization kinetics, measured by the DSC, shows faster nanocomposite crystallization rates relative to the neat PEO at all LNP contents examined. This indicates that the supernucleation effect of LNPs dominates over the decrease in the growth rates, although its influence slightly decreases as the LNP content increases. The strong hydrogen-bonded interactions between the LNPs and the PEO are thus reminiscent of confinement effects found in polymer-grafted NP nanocomposites (e.g., PEO-g-SiO2/PEO) in the brush-controlled regime. | es_ES |
dc.description.sponsorship | This work received funding from the Basque Government through grant IT1503 - 22. S.K.K . acknowledges funding by the U.S. Department of Energy, Office of Science, grants DE- SC0018182, DE-SC0018135, and DE-SC0018111. The authors acknowledged the financial support of Fundacion Losano, PIP2011 848, and PUE No. 22920160100007 (CONICET) . The authors acknowledge the support of Ana Martínez Amesti, Microscopy: Polymer Characterization Research Service, SGIker (UPV/EHU) . | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Chemical Society | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | isotactic polypropylene | es_ES |
dc.subject | poly(ethylene oxide) | es_ES |
dc.subject | heterogeneous nucleation | es_ES |
dc.subject | polyethylene fractions | es_ES |
dc.subject | thermal properties | es_ES |
dc.subject | efficiency scale | es_ES |
dc.subject | self-nucleation | es_ES |
dc.subject | polymer | es_ES |
dc.subject | lignin | es_ES |
dc.subject | nanocomposites | es_ES |
dc.title | Supernucleation Dominates Lignin/Poly(ethylene oxide) Crystallization Kinetics | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2022 The Authors. Published by American Chemical Society. Attribution 4.0 International (CC BY 4.0) | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://pubs.acs.org/doi/10.1021/acs.macromol.2c00925 | es_ES |
dc.identifier.doi | 10.1021/acs.macromol.2c00925 | |
dc.departamentoes | Polímeros y Materiales Avanzados: Física, Química y Tecnología | es_ES |
dc.departamentoes | Ingeniería química y del medio ambiente | es_ES |
dc.departamentoeu | Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa eta ingurumenaren ingeniaritza | es_ES |