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dc.contributor.authorFranco García, María Lourdes
dc.contributor.authorRodríguez Galán, Rafael Alfonso
dc.contributor.authorPuiggalí Bellalta, Jordi
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2011-03-04T11:23:45Z
dc.date.available2011-03-04T11:23:45Z
dc.date.created2010-12
dc.date.issued2010-12
dc.identifier.citationFranco, M.; Rodriguez, R.; Puiggali, J. Influence of degradation on the crystallization behaviour of a biodegradable segmented copolymer constituted by glycolide and trimethylene carbonate units. "Polymer degradation and stability", Desembre 2010, vol. 95, núm. 12, p. 2376-2387.
dc.identifier.issn0141-3910
dc.identifier.urihttp://hdl.handle.net/2117/11660
dc.description.abstractThe influence of degradation on non-isothermal crystallization from the melt of a segmented copolymer constituted of glycolide and trimethylene carbonate units and used as a bioabsorbable surgical suture was studied by optical microscopy, differential scanning calorimetry and time-resolved X-ray diffraction. Fibrillar positive spherulites were obtained with slightly degraded samples but new axialitic morphologies were detected when samples had a molecular weight, Mw, lower than 29,000 g/mol and the crystallization started at a high temperature. Crystal growth kinetics of samples degraded under different conditions was evaluated over a wide temperature range by a non-isothermal method. Two crystallization regimes (I and II) were determined for the more degraded samples (i.e., those able to crystallize according to axialitic and spherulitic morphologies), whereas only regime II was found for samples of higher molecular weights. Primary nucleation density decreased with the extent of degradation provided no morphological changes occurred, and so did the regularity of lamellar stacking, as shown by synchrotron measurements, although the morphological parameters remained practically constant.
dc.format.extent12 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshCopolymers
dc.subject.lcshBiodegradation
dc.titleInfluence of degradation on the crystallization behaviour of a biodegradable segmented copolymer constituted by glycolide and trimethylene carbonate units
dc.typeArticle
dc.subject.lemacPolímers
dc.contributor.groupUniversitat Politècnica de Catalunya. PSEP - Polimers Sintètics: Estructura i Propietats. Polimers Biodegradables.
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac5281458
dc.description.versionPostprint (published version)
local.citation.authorFranco, M.; Rodriguez, R.; Puiggali, J.
local.citation.publicationNamePolymer degradation and stability
local.citation.volume95
local.citation.number12
local.citation.startingPage2376
local.citation.endingPage2387


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Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain