dc.contributor.author | Basterrechea Gorostiza, Andere | |
dc.contributor.author | Gabirondo Amenabar, Elena | |
dc.contributor.author | Flores, Irma | |
dc.contributor.author | Etxeberria Lizarraga, Agustín | |
dc.contributor.author | González Vives, Alba | |
dc.contributor.author | Müller Sánchez, Alejandro Jesús | |
dc.contributor.author | Mecerreyes Molero, David | |
dc.contributor.author | Coulembier, Olivier | |
dc.contributor.author | Sardon Muguruza, Haritz | |
dc.date.accessioned | 2019-06-03T16:09:01Z | |
dc.date.available | 2019-06-03T16:09:01Z | |
dc.date.issued | 2019-05-01 | |
dc.identifier.citation | Macromolecules 52(9) : 3506−3515 (2019) | es_ES |
dc.identifier.issn | 0024-9297 | |
dc.identifier.uri | http://hdl.handle.net/10810/33075 | |
dc.description.abstract | Isomorphism in random copolymers occurs when comonomer units can crystallize within a single crystalline lattice in the entire composition range. This ideal behavior is rare in random copolymers and only a few examples of isomorphism are found in copolyesters and copolycarbonates. In this work, we show a series of polyoxyalkylenes copolyethers obtained by copolymerization of 1,6-hexanediol and 1,12-dodecanediol which are able to crystallize in the entire composition range and display an isomorphic behavior. The copolymers were synthesized via a bulk self-condensation method at high temperature, using a thermally stable Non-Eutectic Mixture Organocatalyst (NEMO) prepared from methanesulfonic acid (MSA) and 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD). The final molar ratios of the copolyethers were calculated by 1H NMR spectroscopy and the random distribution of the two monomeric units was confirmed by 13C NMR spectroscopy. The effect of the composition of comonomer units on the crystalline structure was investigated by DSC and WAXS. The two comonomeric units along the chain can co-crystallize regardless of the composition, while displaying melting point values that vary linearly in between those of the parent homopolymers (54,9 and 84,7 °C). The crystalline reflections given by WAXS demonstrated that the two comonomers are miscible in the crystalline state and meet the general criteria to be regarded isomorphic random copolymers. Finally, a random terpolymer was synthetized from 1,6-hexanediol, 1,10-decanediol and 1,12-dodecanediol, which also shows a single melting temperature, thus demonstrating the versatility of the polymerization route employed. | es_ES |
dc.description.sponsorship | The authors thank the European Commission for its financial support through the projects SUSPOL-EJD 642671. Haritz Sardon and David Mecerreyes gratefully acknowledge financial support from MINECO through project POLYCE. A. J. Müller, O. Coulembier and H. Sardon also acknowledge European funding by the RISE BIODEST project (H2020-MSCA-RISE-2017-778092). The authors also thank the technical and human support provided by Mrs. Sofia Guezala (SGIker) of UPV/EHU for the NMR analysis. H. Sardon, A.J. Müller and I. Flores acknowledge funding and beam time from ALBA Synchrotron facility through the project: 2017092338 (2018). A. J. Müller gratefully acknowledges financial support from MINECO through project MAT2017-83014-C2-1-P. A. Etxeberria acknowledges financial support from the Basque Government (GIC IT-618-13). O. C. is Research Associate for the F.R.S.-FNRS. Irma Flores would like to acknowledge Conacyt (Mexico) for supporting her PhD studies with a scholarship. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Chemical Society | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/642671 | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/778092 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.subject | aliphatic copolyether | es_ES |
dc.subject | organocatalysis | es_ES |
dc.subject | copolymerization | es_ES |
dc.subject | isomorphism | es_ES |
dc.subject | crystallinity | es_ES |
dc.title | Isomorphic polyoxyalkylenes copolyethers obtained by copolymerization of aliphatic diols | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Copyright © 2019 American Chemical Society | es_ES |
dc.relation.publisherversion | https://pubs.acs.org/doi/10.1021/acs.macromol.9b00469 | es_ES |
dc.identifier.doi | 10.1021/acs.macromol.9b00469 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Ciencia y tecnología de polímeros | es_ES |
dc.departamentoeu | Polimeroen zientzia eta teknologia | es_ES |