Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)

Unformatted post-print version of the accepted article

Detalles Bibliográficos
Autores: Pérez Camargo, Ricardo Arpad, Liu, Guoming, Meabe Iturbe, Leire, Zhao, Ying, Sardon Muguruza, Haritz, Wang, Dujin, Müller Sánchez, Alejandro Jesús
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/60036
Acceso en línea:http://hdl.handle.net/10810/60036
Access Level:acceso abierto
Palabra clave:carbene compounds
conformation
crystallization
differential scanning calorimetry
phase transitions
aliphatic linear polycarbonates
solid-solid transitions
brill-like transition
ordered and disordered conformations
unit cell shrinkage
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spelling Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)Pérez Camargo, Ricardo ArpadLiu, GuomingMeabe Iturbe, LeireZhao, YingSardon Muguruza, HaritzWang, DujinMüller Sánchez, Alejandro Jesúscarbene compoundsconformationcrystallizationdifferential scanning calorimetryphase transitionsaliphatic linear polycarbonatessolid-solid transitionsbrill-like transitionordered and disordered conformationsunit cell shrinkageUnformatted post-print version of the accepted articlePoly (hexamethylene carbonate) (PC6) and poly (octamethylene carbonate) (PC8) were studied under different crystallization conditions. Using differential scanning calorimetry (DSC), a new solid-solid transition, denoted α to δ transition, was detected at low temperatures (<RT) in both PC6 and PC8 samples. The α to δ transition was represented by exothermic (i.e., α to δ) (−6 °C (PC6) and −20 °C (PC8)) and endothermic peaks (i.e., δ to α) (15 °C (PC6) and 28 °C (PC8)), during cooling and heating DSC scans, respectively. Isothermal tests revealed that this solid-solid transition depends on the specific thermal history, since it is not observed at isothermal temperatures higher than room temperature. Still, it is detected in the subsequent cooling and heating scans. Wide-angle X-ray scattering (WAXS) and Fourier-transform infrared spectroscopy (FT-IR) experiments were performed at identical conditions to those by DSC. WAXS experiments showed lower d-spacings in the δ phase than in the α one, corresponding to a unit cell shrinkage, explained by a more efficient packing of the methylene groups in the δ phase. The δ phase is also characterized, according to FT-IR experiments, by more ordered conformation of the methylene groups (i.e., reflected in the appearance of a new absorption band) compared to the less ordered conformation in the α phase.This work is supported by the National Key R&D Program of China (2017YFE0117800) and the National Natural Science Foundation of China (51820105005, 21922308, and 52050410327). We would like to thank the financial support provided by the BIODEST project; this project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement no. 778092. This work has also received funding from MINECO through project MAT2017-83014-C2-1-P and from Basque Government through grant IT1309-19. R.A.P.-C is supported by the China Postdoctoral Science Foundation (2020M670462). G.L. is grateful to the Youth Innovation Promotion Association of the Chinese Academy of Sciences (Y201908). We also thanks to the BSRF (beamline 1W2A).ACSEuropean Commission202320232021info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/60036reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/EC/H2020/778092info:eu-repo/grantAgreement/MINECO/MAT2017-83014-C2-1-P/https://pubs.acs.org/doi/10.1021/acs.macromol.1c01188info:eu-repo/semantics/openAccess© 2021 American Chemical Societyoai:addi.ehu.eus:10810/600362026-06-18T09:23:17Z
dc.title.none.fl_str_mv Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)
title Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)
spellingShingle Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)
Pérez Camargo, Ricardo Arpad
carbene compounds
conformation
crystallization
differential scanning calorimetry
phase transitions
aliphatic linear polycarbonates
solid-solid transitions
brill-like transition
ordered and disordered conformations
unit cell shrinkage
title_short Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)
title_full Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)
title_fullStr Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)
title_full_unstemmed Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)
title_sort Solid–Solid Crystal Transitions (δ to α) in Poly(hexamethylene carbonate) and Poly(octamethylene carbonate)
dc.creator.none.fl_str_mv Pérez Camargo, Ricardo Arpad
Liu, Guoming
Meabe Iturbe, Leire
Zhao, Ying
Sardon Muguruza, Haritz
Wang, Dujin
Müller Sánchez, Alejandro Jesús
author Pérez Camargo, Ricardo Arpad
author_facet Pérez Camargo, Ricardo Arpad
Liu, Guoming
Meabe Iturbe, Leire
Zhao, Ying
Sardon Muguruza, Haritz
Wang, Dujin
Müller Sánchez, Alejandro Jesús
author_role author
author2 Liu, Guoming
Meabe Iturbe, Leire
Zhao, Ying
Sardon Muguruza, Haritz
Wang, Dujin
Müller Sánchez, Alejandro Jesús
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
dc.subject.none.fl_str_mv carbene compounds
conformation
crystallization
differential scanning calorimetry
phase transitions
aliphatic linear polycarbonates
solid-solid transitions
brill-like transition
ordered and disordered conformations
unit cell shrinkage
topic carbene compounds
conformation
crystallization
differential scanning calorimetry
phase transitions
aliphatic linear polycarbonates
solid-solid transitions
brill-like transition
ordered and disordered conformations
unit cell shrinkage
description Unformatted post-print version of the accepted article
publishDate 2021
dc.date.none.fl_str_mv 2021
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/60036
url http://hdl.handle.net/10810/60036
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/EC/H2020/778092
info:eu-repo/grantAgreement/MINECO/MAT2017-83014-C2-1-P/
https://pubs.acs.org/doi/10.1021/acs.macromol.1c01188
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
© 2021 American Chemical Society
eu_rights_str_mv openAccess
rights_invalid_str_mv © 2021 American Chemical Society
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ACS
publisher.none.fl_str_mv ACS
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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