Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic units

The influence of incorporating 5-tert-butyl isophthalic units (tBI) in the polymer chain of poly(ethylene terephthalate) (PET) on the crystallization behavior, crystal structure, and tensile and gas transport properties of this polyester was evaluated. Random poly(ethyleneterephthalate-co-5-tert-but...

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Detalles Bibliográficos
Autores: Kint, Darwin, P. R., Rudé i Payró, Elisabet, Llorens Llacuna, Joan, Muñoz-Guerra, Sebastián
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2002
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/46684
Acceso en línea:https://hdl.handle.net/2445/46684
Access Level:acceso abierto
Palabra clave:Cristal·lització
Estructura cristal·lina (Sòlids)
Propietats mecàniques
Permeabilitat
Tereftalat de polietilè
Crystallization
Layer structure (Solids)
Mechanical properties
Permeability
Polyethylene terephthalate
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spelling Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic unitsKint, Darwin, P. R.Rudé i Payró, ElisabetLlorens Llacuna, JoanMuñoz-Guerra, SebastiánCristal·litzacióEstructura cristal·lina (Sòlids)Propietats mecàniquesPermeabilitatTereftalat de polietilèCrystallizationLayer structure (Solids)Mechanical propertiesPermeabilityPolyethylene terephthalateThe influence of incorporating 5-tert-butyl isophthalic units (tBI) in the polymer chain of poly(ethylene terephthalate) (PET) on the crystallization behavior, crystal structure, and tensile and gas transport properties of this polyester was evaluated. Random poly(ethyleneterephthalate-co-5-tert-butyl isophthalate) copolyesters (PETtBI) containing between 5 and 40 mol% of tBI units were examined. Isothermal crystallization studies were performed on amorphous glassy films at 120 8C and on molten samples at 200 8C by means of differential scanning calorimetry. Furthermore, the non-isothermal crystallization behavior of the copolyesters was investigated. It was observed that both crystallinity and crystallization rate of the PETtBI copolyesters tend to decrease largely with the comonomeric content, except for the copolymer containing 5 mol% of tBI units, which crystallized faster than PET. Fiber X-ray diffraction patterns of the semicrystalline PETtBI copolyesters proved that they adopt the same triclinic crystal structure as PET with the comonomeric units being excluded from the crystalline phase. Although PETtBI copolyesters became brittle for higher contents in tBI, the tensile modulus and strength of PET were barely affected by copolymerization. The ncorporation of tBI units slightly increased the permeability of PET, but copolymers containing up to 20 mol% of the comonomeric units were still able to present barrier properties.Elsevier B.V.2002info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/46684Articles publicats en revistes (Enginyeria Química i Química Analítica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: http://dx.doi.org/10.1016/S0032-3861(02)00715-2Polymer, 2002, vol. 43, num. 26, p. 7529-7537http://dx.doi.org/10.1016/S0032-3861(02)00715-2(c) Elsevier B.V., 2002info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/466842026-05-27T06:46:51Z
dc.title.none.fl_str_mv Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic units
title Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic units
spellingShingle Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic units
Kint, Darwin, P. R.
Cristal·lització
Estructura cristal·lina (Sòlids)
Propietats mecàniques
Permeabilitat
Tereftalat de polietilè
Crystallization
Layer structure (Solids)
Mechanical properties
Permeability
Polyethylene terephthalate
title_short Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic units
title_full Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic units
title_fullStr Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic units
title_full_unstemmed Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic units
title_sort Crystallization and properties of poly(ethylene terephtalate) copolymers containing 5-tert-butyl isophtalic units
dc.creator.none.fl_str_mv Kint, Darwin, P. R.
Rudé i Payró, Elisabet
Llorens Llacuna, Joan
Muñoz-Guerra, Sebastián
author Kint, Darwin, P. R.
author_facet Kint, Darwin, P. R.
Rudé i Payró, Elisabet
Llorens Llacuna, Joan
Muñoz-Guerra, Sebastián
author_role author
author2 Rudé i Payró, Elisabet
Llorens Llacuna, Joan
Muñoz-Guerra, Sebastián
author2_role author
author
author
dc.subject.none.fl_str_mv Cristal·lització
Estructura cristal·lina (Sòlids)
Propietats mecàniques
Permeabilitat
Tereftalat de polietilè
Crystallization
Layer structure (Solids)
Mechanical properties
Permeability
Polyethylene terephthalate
topic Cristal·lització
Estructura cristal·lina (Sòlids)
Propietats mecàniques
Permeabilitat
Tereftalat de polietilè
Crystallization
Layer structure (Solids)
Mechanical properties
Permeability
Polyethylene terephthalate
description The influence of incorporating 5-tert-butyl isophthalic units (tBI) in the polymer chain of poly(ethylene terephthalate) (PET) on the crystallization behavior, crystal structure, and tensile and gas transport properties of this polyester was evaluated. Random poly(ethyleneterephthalate-co-5-tert-butyl isophthalate) copolyesters (PETtBI) containing between 5 and 40 mol% of tBI units were examined. Isothermal crystallization studies were performed on amorphous glassy films at 120 8C and on molten samples at 200 8C by means of differential scanning calorimetry. Furthermore, the non-isothermal crystallization behavior of the copolyesters was investigated. It was observed that both crystallinity and crystallization rate of the PETtBI copolyesters tend to decrease largely with the comonomeric content, except for the copolymer containing 5 mol% of tBI units, which crystallized faster than PET. Fiber X-ray diffraction patterns of the semicrystalline PETtBI copolyesters proved that they adopt the same triclinic crystal structure as PET with the comonomeric units being excluded from the crystalline phase. Although PETtBI copolyesters became brittle for higher contents in tBI, the tensile modulus and strength of PET were barely affected by copolymerization. The ncorporation of tBI units slightly increased the permeability of PET, but copolymers containing up to 20 mol% of the comonomeric units were still able to present barrier properties.
publishDate 2002
dc.date.none.fl_str_mv 2002
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/46684
url https://hdl.handle.net/2445/46684
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: http://dx.doi.org/10.1016/S0032-3861(02)00715-2
Polymer, 2002, vol. 43, num. 26, p. 7529-7537
http://dx.doi.org/10.1016/S0032-3861(02)00715-2
dc.rights.none.fl_str_mv (c) Elsevier B.V., 2002
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier B.V., 2002
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Química i Química Analítica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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