Show simple item record

dc.contributor.authorPalacios, Jordana
dc.contributor.authorMugica, Agurtzane
dc.contributor.authorZubitur, Manuela
dc.contributor.authorIturrospe, Amaia
dc.contributor.authorArbe, A.
dc.contributor.authorLiu, Guoming
dc.contributor.authorWang, Dujin
dc.contributor.authorZhao, Junpeng
dc.contributor.authorHadjichristidis, Nikos
dc.contributor.authorMuller, Alejandro
dc.date.accessioned2016-01-10T10:08:22Z
dc.date.available2016-01-10T10:08:22Z
dc.date.issued2016
dc.identifier.citationSequential crystallization and morphology of triple crystalline biodegradable PEO-b-PCL-b-PLLA triblock terpolymers 2016 RSC Adv.
dc.identifier.issn2046-2069
dc.identifier.doi10.1039/C5RA25812J
dc.identifier.urihttp://hdl.handle.net/10754/593139
dc.description.abstractThe sequential crystallization of poly(ethylene oxide)-b-poly(e-caprolactone)-b-poly(L-lactide) (PEO-b-PCL-b-PLLA) triblock terpolymers, in which the three blocks are able to crystallize separately and sequentially from the melt, is presented. Two terpolymers with identical PEO and PCL block lengths and two different PLLA block lengths were prepared, thus the effect of increasing PLLA content on the crystallization behavior and morphology was evaluated. Wide angle X-Ray scattering (WAXS) experiments performed on cooling from the melt confirmed the triple crystalline nature of these terpolymers and revealed that they crystallize in sequence: the PLLA block crystallizes first, then the PCL block, and finally the PEO block. Differential scanning calorimetry (DSC) analysis further demonstrated that the three blocks can crystallize from the melt when a low cooling rate is employed. The crystallization process takes place from a homogenous melt as indicated by small angle X-Ray scattering (SAXS) experiments. The crystallization and melting enthalpies and temperatures of both PEO and PCL blocks decrease as PLLA content in the terpolymer increases. Polarized light optical microscopy (PLOM) demonstrated that the PLLA block templates the morphology of the terpolymer, as it forms spherulites upon cooling from the melt. The subsequent crystallization of PCL and PEO blocks occurs inside the interlamellar regions of the previously formed PLLA block spherulites. In this way, unique triple crystalline mixed spherulitic superstructures have been observed for the first time. As the PLLA content in the terpolymer is reduced the superstructural morphology changes from spherulites to a more axialitic-like structure.
dc.language.isoen
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/C5RA25812J
dc.rightsArchived with thanks to RSC Adv.
dc.titleSequential crystallization and morphology of triple crystalline biodegradable PEO-b-PCL-b-PLLA triblock terpolymers
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentPolymer Synthesis Laboratory
dc.identifier.journalRSC Adv.
dc.eprint.versionPost-print
dc.contributor.institutionPOLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
dc.contributor.institutionChemical and Environmental Engineering Department, Polytechnic School, University of the Basque Country UPV/EHU, 20018 Donostia-San Sebastián, Spain
dc.contributor.institutionMaterials Physics Center (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
dc.contributor.institutionBeijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
dc.contributor.institutionIKERBASQUE, Basque Foundation for Science, Bilbao, Spain
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personZhao, Junpeng
kaust.personHadjichristidis, Nikos
refterms.dateFOA2017-01-05T00:00:00Z


Files in this item

Thumbnail
Name:
c5ra25812j.pdf
Size:
1.562Mb
Format:
PDF
Description:
Accepted Manuscript
Thumbnail
Name:
c5ra25812j1.pdf
Size:
331.6Kb
Format:
PDF
Description:
Supplemental files
Thumbnail
Name:
c5ra25812j2.mp4
Size:
3.066Mb
Format:
Unknown
Description:
Supplemental files
Thumbnail
Name:
c5ra25812j3.mp4
Size:
5.860Mb
Format:
Unknown
Description:
Supplemental files

This item appears in the following Collection(s)

Show simple item record