Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studies

Crystallization of a biodegradable segmented copolymer constituted by polyglycolide hard segments and a middle soft segment constituted by a random disposition of glycolyl, e-caproyl and trimethylene carbonyl units has been studied by means of optical microscopy, atomic force microscopy and time res...

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Authors: Márquez Lobato, Yolanda, Franco García, María Lourdes|||0000-0001-5968-285X, Martínez, Juan Carlos, Estrany, Francesc, Turón Dols, Pau, Puiggalí Bellalta, Jordi|||0000-0002-0640-4474
Format: article
Publication Date:2015
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/82346
Online Access:https://hdl.handle.net/2117/82346
https://dx.doi.org/10.1016/j.eurpolymj.2015.10.014
Access Level:Open access
Keyword:Copolymers
Absorbable sutures
Glycolide copolymer
Crystallization kinetics
Isothermal crystallization
Non-isothermal crystallization
Spherulitic morphology
Copolímers
Àrees temàtiques de la UPC::Enginyeria química
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spelling Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studiesMárquez Lobato, YolandaFranco García, María Lourdes|||0000-0001-5968-285XMartínez, Juan CarlosEstrany, FrancescTurón Dols, PauPuiggalí Bellalta, Jordi|||0000-0002-0640-4474CopolymersAbsorbable suturesGlycolide copolymerCrystallization kineticsIsothermal crystallizationNon-isothermal crystallizationSpherulitic morphologyCopolímersÀrees temàtiques de la UPC::Enginyeria químicaCrystallization of a biodegradable segmented copolymer constituted by polyglycolide hard segments and a middle soft segment constituted by a random disposition of glycolyl, e-caproyl and trimethylene carbonyl units has been studied by means of optical microscopy, atomic force microscopy and time resolved X-ray diffraction techniques. This Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer is widely employed as surgical suture and has similar characteristics than previously studied copolymers having a middle soft segment constituted by only two monomers (i.e. glycolide and trimethylene carbonate). FTIR and NMR spectroscopies demonstrated that the middle segment had an amorphous character and a random microstructure as consequence of transesterification reactions that took place during synthesis. Nevertheless, polyglycolide segments were able to crystallize giving rise to peculiar positive birefringent spherulites with a morphology, which depends on crystallization temperature (i.e. flat-on and edge-on crystals) as verified by AFM and electron diffraction patterns. Complete bell shaped curves that defined the temperature dependence of the crystal growth rate could be experimentally obtained from both, isothermal and non-isothermal crystallizations. Data from both analyses were in close agreement and pointed out a secondary nucleation constant (2.42–2.88 × 105 K2) which was clearly higher than that determined for the related system with two components. Lamellar morphologic parameters were similar for samples crystallized from the melt state and after the reordering process that took place on heating. Comparing to the bicomponent system, significant differences were again observed highlighting the influence of the soft segment on the crystallization behaviorPeer Reviewed20152015-12-0120162016-02-01journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/82346https://dx.doi.org/10.1016/j.eurpolymj.2015.10.014reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/823462026-05-27T15:37:01Z
dc.title.none.fl_str_mv Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studies
title Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studies
spellingShingle Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studies
Márquez Lobato, Yolanda
Copolymers
Absorbable sutures
Glycolide copolymer
Crystallization kinetics
Isothermal crystallization
Non-isothermal crystallization
Spherulitic morphology
Copolímers
Àrees temàtiques de la UPC::Enginyeria química
title_short Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studies
title_full Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studies
title_fullStr Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studies
title_full_unstemmed Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studies
title_sort Spherulitic morphologies of the triblock Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer: Isothermal and non-isothermal crystallization studies
dc.creator.none.fl_str_mv Márquez Lobato, Yolanda
Franco García, María Lourdes|||0000-0001-5968-285X
Martínez, Juan Carlos
Estrany, Francesc
Turón Dols, Pau
Puiggalí Bellalta, Jordi|||0000-0002-0640-4474
author Márquez Lobato, Yolanda
author_facet Márquez Lobato, Yolanda
Franco García, María Lourdes|||0000-0001-5968-285X
Martínez, Juan Carlos
Estrany, Francesc
Turón Dols, Pau
Puiggalí Bellalta, Jordi|||0000-0002-0640-4474
author_role author
author2 Franco García, María Lourdes|||0000-0001-5968-285X
Martínez, Juan Carlos
Estrany, Francesc
Turón Dols, Pau
Puiggalí Bellalta, Jordi|||0000-0002-0640-4474
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Copolymers
Absorbable sutures
Glycolide copolymer
Crystallization kinetics
Isothermal crystallization
Non-isothermal crystallization
Spherulitic morphology
Copolímers
Àrees temàtiques de la UPC::Enginyeria química
topic Copolymers
Absorbable sutures
Glycolide copolymer
Crystallization kinetics
Isothermal crystallization
Non-isothermal crystallization
Spherulitic morphology
Copolímers
Àrees temàtiques de la UPC::Enginyeria química
description Crystallization of a biodegradable segmented copolymer constituted by polyglycolide hard segments and a middle soft segment constituted by a random disposition of glycolyl, e-caproyl and trimethylene carbonyl units has been studied by means of optical microscopy, atomic force microscopy and time resolved X-ray diffraction techniques. This Poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) copolymer is widely employed as surgical suture and has similar characteristics than previously studied copolymers having a middle soft segment constituted by only two monomers (i.e. glycolide and trimethylene carbonate). FTIR and NMR spectroscopies demonstrated that the middle segment had an amorphous character and a random microstructure as consequence of transesterification reactions that took place during synthesis. Nevertheless, polyglycolide segments were able to crystallize giving rise to peculiar positive birefringent spherulites with a morphology, which depends on crystallization temperature (i.e. flat-on and edge-on crystals) as verified by AFM and electron diffraction patterns. Complete bell shaped curves that defined the temperature dependence of the crystal growth rate could be experimentally obtained from both, isothermal and non-isothermal crystallizations. Data from both analyses were in close agreement and pointed out a secondary nucleation constant (2.42–2.88 × 105 K2) which was clearly higher than that determined for the related system with two components. Lamellar morphologic parameters were similar for samples crystallized from the melt state and after the reordering process that took place on heating. Comparing to the bicomponent system, significant differences were again observed highlighting the influence of the soft segment on the crystallization behavior
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-12-01
2016
2016-02-01
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/2117/82346
https://dx.doi.org/10.1016/j.eurpolymj.2015.10.014
url https://hdl.handle.net/2117/82346
https://dx.doi.org/10.1016/j.eurpolymj.2015.10.014
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

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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
repository.mail.fl_str_mv
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