Tunable structure and properties of segmented thermoplastic polyurethanes as a function of flexible segment
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Tunable structure and properties of segmented thermoplastic polyurethanes as a function of flexible segment

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Tunable structure and properties of segmented thermoplastic polyurethanes as a function of flexible segment

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dc.contributor.author Asensio, Manuel
dc.contributor.author Costa, Victor
dc.contributor.author Nohales, Andrés
dc.contributor.author Bianchi, Otávio
dc.contributor.author Gómez Clarí, Mª Clara
dc.date.accessioned 2020-05-07T07:32:28Z
dc.date.available 2020-05-07T07:32:28Z
dc.date.issued 2019
dc.identifier.uri https://hdl.handle.net/10550/74465
dc.description.abstract Segmented thermoplastic polyurethanes (PUs) were synthetized using macrodiols with different functional groups (carbonate, ester, and /or ether) as a segment with a molar mass of 1000 and 2000 g/mol, and 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol as a rigid segment. The polyurethanes obtained reveal a wide variation of microphase separation degree that is correlated with mechanical properties and retention of tensile properties under degradation by heat, oil, weather, and water. Different techniques such as differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), Fourier transform infrared (FTIR), and synchrotron small-angle X-ray scattering (SAXS) were used to determine rigid-flexible segments' phase behaviour. Retention of tensile properties determines the stability of the samples under different external factors. This work reveals that pure polycarbonate-based macrodiols induce the highest degree of phase miscibility, better tensile properties, hardness shore A, and retention of tensile properties under external agents.
dc.language.iso eng
dc.relation.ispartof Polymers, 2019, vol. 11, p. 1910-1-1910-19
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Asensio, Manuel Costa, Victor Nohales, Andrés Bianchi, Otávio Gómez Clarí, Mª Clara 2019 Tunable structure and properties of segmented thermoplastic polyurethanes as a function of flexible segment Polymers 11 1910-1 1910-19
dc.subject Termoplàstics
dc.subject Solucions polimèriques
dc.subject Ciència dels materials
dc.title Tunable structure and properties of segmented thermoplastic polyurethanes as a function of flexible segment
dc.type info:eu-repo/semantics/article
dc.date.updated 2020-05-07T07:32:28Z
dc.identifier.doi https://doi.org/10.3390/polym11121910
dc.identifier.idgrec 138811

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