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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

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, Clara M.
dc.date.accessioned	2020-05-07T07:32:28Z
dc.date.available	2020-05-07T07:32:28Z
dc.date.issued	2019
dc.identifier.citation	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.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.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	journal article	es_ES
dc.date.updated	2020-05-07T07:32:28Z
dc.identifier.doi	10.3390/polym11121910
dc.identifier.idgrec	138811
dc.rights.accessRights	open access	es_ES