dc.contributor.author | Larrañaga Espartero, Aitor | |
dc.contributor.author | Pompanon, F. | |
dc.contributor.author | Gruffat, N. | |
dc.contributor.author | Palomares Casado, Teodoro | |
dc.contributor.author | Alonso Varona, Ana Isabel | |
dc.contributor.author | Larrañaga Varga, Aitor | |
dc.contributor.author | Fernandez Yague, Marc A. | |
dc.contributor.author | Biggs, M. | |
dc.contributor.author | Sarasua Oiz, José Ramón | |
dc.date.accessioned | 2024-10-08T15:55:10Z | |
dc.date.available | 2024-10-08T15:55:10Z | |
dc.date.issued | 2016-10-29 | |
dc.identifier.citation | European Polymer Journal 85 : 401-410 (2016) | es_ES |
dc.identifier.issn | 0014-3057 | |
dc.identifier.issn | 1873-1945 | |
dc.identifier.uri | http://hdl.handle.net/10810/69785 | |
dc.description.abstract | In the present study, the relationship between molecular structure and mechanical properties for a medium chain length polyhydroxyalkanoate (mcl-PHA) composed of 3-hydroxyoctanoate and 3-hydroxyhexanoate was elucidated. The mcl-PHA was crystallized from the melt at four different temperatures between its glass transition and melting point (37, 21, 3 and −21 °C) and its molecular structure was analysed by means of differential scanning calorimetry (DSC) and wide-angle X-ray diffractometry (WAXD). The mechanical properties, which were analysed via tensile-tests and dynamic mechanical analysis (DMA), were clearly affected by the selected crystallization temperature and corresponding molecular structure of the polymer. In this sense, samples crystallized at 37, 21 and 3 °C displayed higher secant moduli calculated at 2% (E2% ∼ 20 MPa) than the sample crystallized at −21 °C (E2% ∼ 7 MPa) due to their higher crystallinity. Even if samples crystallized at 37, 21 and 3 °C had very similar degree of crystallinity, their secant moduli calculated at 50, 100 and 200% (E50%, E100% and E200%) and yield strength (σy) were clearly affected by the selected crystallization temperature, showing a positive correlation (i.e., higher crystallization temperatures and corresponding more ordered crystalline domains with narrower crystal distributions resulted in higher E50%, E100% and E200% values). | es_ES |
dc.description.sponsorship | The authors are thankful for funds from the Basque Government, Department of Education, Universities and Research (GIC12/161-IT-632-13) and the Spanish Ministry of Innovation and Competitiveness MINECO (MAT2013-45559-P). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/MAT2013-45559-P | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.title | Effects of isothermal crystallization on the mechanical properties of a elastomeric medium chain length polyhydroxyalkanoate | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2019 Elsevier under CC BY-NC-ND license | es_ES |
dc.relation.publisherversion | http://doi.org/10.1016/j.eurpolymj.2016.10.050 | es_ES |
dc.identifier.doi | 10.1016/j.eurpolymj.2016.10.050 | |
dc.departamentoes | Ingeniería Minera y Metalúrgica y Ciencia de los Materiales | es_ES |
dc.departamentoeu | Meatze eta metalurgia ingeniaritza materialen zientzia | es_ES |