Show simple item record

dc.contributor.authorYousefzade, Omid
dc.contributor.authorJeddi, Javad
dc.contributor.authorFranco García, María Lourdes
dc.contributor.authorPuiggalí Bellalta, Jordi
dc.contributor.authorGarmabi, Hamid
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.identifier.citationYousefzade, O. [et al.]. Crystallization kinetics of chain extended poly(L-lactide)s having different molecular structures. "Materials chemistry and physics", 15 Gener 2020, vol. 240, núm. 122217, p. 122217:1-122217:11.
dc.description.abstractPoly(L-lactide)s (PLLAs) with different chain structures were prepared by reactive melt processing and using Joncryl ADR as chain extender. Results of gel permeation chromatography (GPC) revealed that chain extended PLLAs had high molecular weights and two differentiated molecular weight distributions. Linear rheology was sensitive to the obtained molecular structures and revealed as the increase on the amount of chain extender gradually led to a decrease of the loss factor in the whole frequency region and to an increase of melt viscosity and both storage and loss moduli. In addition, the entanglement density increased significantly with addition of chain extender and had a significant influence on crystallization kinetics. Correlation of molecular weight, viscosity and entanglements changed the crystallinity and crystallization kinetics of chain extended PLLAs in both isothermal and non-isothermal crystallizations. Specifically, samples prepared from 1 wt-% of Joncryl (PLLA1R) revealed the highest nucleation and the fastest crystallization rate.
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshPolylactic acid
dc.subject.otherChain extended PLLA
dc.subject.otherMolecular structure
dc.subject.otherRheological properties
dc.subject.otherCrystallization kinetics
dc.titleCrystallization kinetics of chain extended poly(L-lactide)s having different molecular structures
dc.subject.lemacÀcid polilàctic
dc.contributor.groupUniversitat Politècnica de Catalunya. PSEP - Polimers Sintètics: Estructura i Propietats. Polimers Biodegradables.
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (author's final draft)
local.citation.authorYousefzade, O.; Jeddi, J.; Franco, L.; Puiggali, J.; Garmabi, H.
local.citation.publicationNameMaterials chemistry and physics

Files in this item


This item appears in the following Collection(s)

Show simple item record

All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder