Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerization

Poly(hexamethylene terephthalate) was cyclo-depolymerized in solution by heating to yield a fraction of cyclic oligomers of hexamethylene terephthalate (c(HT)2-5) with a content around to 95% in dimer to pentamer. Ring-opening polymerization in the melt of c(HT)2-5, either neat or in mixtures with ε...

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Autores: González Vidal, Nathalie, Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon|||0000-0001-8105-2168, Muñoz Guerra, Sebastián|||0000-0002-4273-2301
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/6628
Acceso en línea:https://hdl.handle.net/2117/6628
https://dx.doi.org/10.1016/j.eurpolymj.2009.12.016
Access Level:acceso abierto
Palabra clave:Ring-opening polymerization
Polímers -- Materials -- Congressos
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
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spelling Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerizationGonzález Vidal, NathalieMartínez de Ilarduya Sáez de Asteasu, Domingo Antxon|||0000-0001-8105-2168Muñoz Guerra, Sebastián|||0000-0002-4273-2301Ring-opening polymerizationPolímers -- Materials -- CongressosÀrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímersPoly(hexamethylene terephthalate) was cyclo-depolymerized in solution by heating to yield a fraction of cyclic oligomers of hexamethylene terephthalate (c(HT)2-5) with a content around to 95% in dimer to pentamer. Ring-opening polymerization in the melt of c(HT)2-5, either neat or in mixtures with ε-caprolactone (CL) covering a range of HT/CL ratios from 9/1 to 1/9 was carried out to produce polyesters with molecular weights above 30,000 in high yields. The copolyesters had a comonomer composition according to the feed and the microstructure evolved from random to blocky as the content in CL increases. The thermal and mechanical properties of the copolyesters were evaluated for a variety of compositions. Results obtained in this work were compared to those previously obtained by us in the ring-opening copolymerization of CL with a cyclic oligomeric fraction enriched in hexamer and heptamer (c(HT)6-7). Although the polyesters resulting from the use of these two fractions were similar, significant differences were found in polymerization rate evidencing a lower reactivity of c(HT)n with decreasing values of n.Peer Reviewed20102010-04-0120102010-03-12journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/6628https://dx.doi.org/10.1016/j.eurpolymj.2009.12.016reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/66282026-05-27T15:37:01Z
dc.title.none.fl_str_mv Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerization
title Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerization
spellingShingle Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerization
González Vidal, Nathalie
Ring-opening polymerization
Polímers -- Materials -- Congressos
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
title_short Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerization
title_full Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerization
title_fullStr Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerization
title_full_unstemmed Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerization
title_sort Poly(hexamethylene terephthalate-co-caprolactone) copolymers: Influence of cycle size on ring-opening polymerization
dc.creator.none.fl_str_mv González Vidal, Nathalie
Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon|||0000-0001-8105-2168
Muñoz Guerra, Sebastián|||0000-0002-4273-2301
author González Vidal, Nathalie
author_facet González Vidal, Nathalie
Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon|||0000-0001-8105-2168
Muñoz Guerra, Sebastián|||0000-0002-4273-2301
author_role author
author2 Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon|||0000-0001-8105-2168
Muñoz Guerra, Sebastián|||0000-0002-4273-2301
author2_role author
author
dc.subject.none.fl_str_mv Ring-opening polymerization
Polímers -- Materials -- Congressos
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
topic Ring-opening polymerization
Polímers -- Materials -- Congressos
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
description Poly(hexamethylene terephthalate) was cyclo-depolymerized in solution by heating to yield a fraction of cyclic oligomers of hexamethylene terephthalate (c(HT)2-5) with a content around to 95% in dimer to pentamer. Ring-opening polymerization in the melt of c(HT)2-5, either neat or in mixtures with ε-caprolactone (CL) covering a range of HT/CL ratios from 9/1 to 1/9 was carried out to produce polyesters with molecular weights above 30,000 in high yields. The copolyesters had a comonomer composition according to the feed and the microstructure evolved from random to blocky as the content in CL increases. The thermal and mechanical properties of the copolyesters were evaluated for a variety of compositions. Results obtained in this work were compared to those previously obtained by us in the ring-opening copolymerization of CL with a cyclic oligomeric fraction enriched in hexamer and heptamer (c(HT)6-7). Although the polyesters resulting from the use of these two fractions were similar, significant differences were found in polymerization rate evidencing a lower reactivity of c(HT)n with decreasing values of n.
publishDate 2010
dc.date.none.fl_str_mv 2010
2010-04-01
2010
2010-03-12
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/6628
https://dx.doi.org/10.1016/j.eurpolymj.2009.12.016
url https://hdl.handle.net/2117/6628
https://dx.doi.org/10.1016/j.eurpolymj.2009.12.016
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
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