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Exploring the role of lignin structure in molecular dynamics of lignin/bio-derived thermoplastic elastomer polyurethane blends

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Show simple item record Ortiz-Serna, P. Carsí, M. Culebras, Mario Collins, Maurice N. Sanchis, María Jesús 2021-04-30T10:18:00Z 2020
dc.identifier.citation Ortiz-Serna P.;Carsí M.;Culebras M.;Collins M.N.;Sanchis M.J. (2020) 'Exploring the role of lignin structure in molecular dynamics of lignin/bio-derived thermoplastic elastomer polyurethane blends'. International Journal Of Biological Macromolecules, 158 :1369-1379. en_US
dc.identifier.issn 0141-8130
dc.description peer-reviewed en_US
dc.description.abstract The relaxation behavior of two lignins (Alcell organosolv, OSL, and hydroxypropyl modified Kraft, ML) and bio-based thermoplastic polyurethane (TPU) blends have been studied by Differential scanning calorimetry (DSC), Dynamic-mechanical analysis (DMA) and Dielectric relaxation spectroscopy (DRS). The effect of blending on the glass and local relaxation processes as a function of composition, frequency, and temperature has been assessed. The dielectric spectra were resolved into dipolar relaxations as well as conductive processes for differing blend compositions. Characteristic relaxation times, activation energies and dielectric relaxation strengths of lignin/xTPU blends were also investigated. It was found that blending suppresses the α-relaxation process of the blends compared to virgin TPU. On the other hand, while the position of the β-relaxation was not influenced by blending, a reduction of the activation energies, Ea, of this process was observed in the lignin/xTPU blends. Finally, changes are observed in the conductivity behavior of both blends, with conductivity processes more favorable for the OSL/xTPU blends. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation 720707 en_US
dc.relation.ispartofseries International Journal of Biological Macromolecules;158, pp. 1369-1379
dc.rights This is the author’s version of a work that was accepted for publication in International Journal of Biological Macromolecules. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Biological Macromolecules Volume 158, 1 September 2020, Pages 1369-1379, en_US
dc.subject bio-based blends en_US
dc.subject lignin en_US
dc.subject relaxation behavior en_US
dc.subject thermal analysis en_US
dc.subject thermoplastic elastomeric polyurethane en_US
dc.title Exploring the role of lignin structure in molecular dynamics of lignin/bio-derived thermoplastic elastomer polyurethane blends en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US 2021-04-30T10:07:41Z
dc.description.version ACCEPTED
dc.identifier.doi 10.1016/j.ijbiomac.2020.04.261
dc.contributor.sponsor Spanish Ministerio de Economia y Competitividad en_US
dc.contributor.sponsor Horizon 2020 en_US
dc.contributor.sponsor European Union (EU) en_US
dc.relation.projectid 720707 en_US
dc.relation.projectid RTI2018-093711-B-I00 en_US 2021-05-03
dc.embargo.terms 2021-05-03 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2958721
dc.internal.copyrightchecked Yes
dc.identifier.journaltitle International Journal Of Biological Macromolecules
dc.description.status peer-reviewed

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