Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/10945
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dc.contributor.authorD'hollander, Stijn-
dc.contributor.authorGommes, Cedric Joseph-
dc.contributor.authorMENS, Raoul-
dc.contributor.authorADRIAENSENS, Peter-
dc.contributor.authorGoderis, Bart-
dc.contributor.authorDu Prez, Filip-
dc.date.accessioned2010-05-21T14:10:07Z-
dc.date.availableNO_RESTRICTION-
dc.date.available2010-05-21T14:10:07Z-
dc.date.issued2010-
dc.identifier.citationJOURNAL OF MATERIALS CHEMISTRY, 20(17). p. 3475-3486-
dc.identifier.issn0959-9428-
dc.identifier.urihttp://hdl.handle.net/1942/10945-
dc.description.abstractA combination of solid-state proton Wide-line Nuclear Magnetic Resonance (NMR) relaxometry and synchrotron Small-angle (SAXS) and Wide-angle (WAXD) X-ray scattering was used to elucidate the microphase morphology of shape memory thermoplastic multi-block polyurethanes based on poly(epsilon-caprolactone), as switching segment and polyurethane based permanent or hard segments (HS). The polyurethanes are produced from the condensation of 1,4-butanediol (BDO) with hexamethylenediisocyanate (HDI). The morphology - induced by the hard-segment crystallization - converts from dispersed randomly placed hard-segment domains into progressively more periodic, but interconnected HS nanophases with increasing HS content. Irrespective of the actual morphology, the SAXS data could be described satisfactorily by using a clipped Gaussian random field (GRF) model. The NMR data demonstrate that the HS domain fraction corresponds to the chemical feed, pointing at a complete phase separation. The material mechanical behavior during repeated deformation cycles can be explained on morphological grounds and involves a spatially heterogeneous plastic deformation of the hard domains.-
dc.description.sponsorshipThe authors thank the IWT (The Institute for the Promotion of Innovation through Science and Technology in Flanders, Belgium) for a PhD scholarship. CJG is grateful to the F.R.S.-FNRS (Fonds de la Recherche Scientifique, Belgium) for a postdoctoral researcher position. The authors gratefully acknowledge the staff of DUBBLE at the ESRF in France for assisting in the SAXS and WAXS measurements and FWO-Vlaanderen for supporting the DUBBLE project. BELSPO in the frame of network IAP P6/27 initiated by the Belgian State, Prime Minister's office (Program P6/27) is acknowledged for financial support.-
dc.language.isoen-
dc.publisherROYAL SOC CHEMISTRY-
dc.titleModeling the morphology and mechanical behavior of shape memory polyurethanes based on solid-state NMR and synchrotron SAXS/WAXD-
dc.typeJournal Contribution-
dc.identifier.epage3486-
dc.identifier.issue17-
dc.identifier.spage3475-
dc.identifier.volume20-
local.format.pages12-
local.bibliographicCitation.jcatA1-
dc.description.notes[Gommes, Cedric Joseph; Goderis, Bart] Univ Liege, Dept Chem Engn, B-4000 Liege, Belgium. [D'hollander, Stijn; Du Prez, Filip] Univ Ghent, Dept Organ Chem, Polymer Chem Res Grp, B-9000 Ghent, Belgium. [Gommes, Cedric Joseph] Catholic Univ Leuven KU Leuven, Div Mol & Nanomat, Dept Chem, B-3001 Heverlee, Belgium. [Mens, Raoul; Adriaensens, Peter] Hasselt Univ, Div Chem, Inst Mat Res, IMO, B-3590 Diepenbeek, Belgium. bart.goderis@chem.kuleuven.be; filip.duprez@ugent.be-
local.type.refereedRefereed-
local.type.specifiedArticle-
dc.bibliographicCitation.oldjcatA1-
dc.identifier.doi10.1039/b923734h-
dc.identifier.isi000276553300017-
item.fulltextNo Fulltext-
item.fullcitationD'hollander, Stijn; Gommes, Cedric Joseph; MENS, Raoul; ADRIAENSENS, Peter; Goderis, Bart & Du Prez, Filip (2010) Modeling the morphology and mechanical behavior of shape memory polyurethanes based on solid-state NMR and synchrotron SAXS/WAXD. In: JOURNAL OF MATERIALS CHEMISTRY, 20(17). p. 3475-3486.-
item.contributorD'hollander, Stijn-
item.contributorGommes, Cedric Joseph-
item.contributorMENS, Raoul-
item.contributorADRIAENSENS, Peter-
item.contributorGoderis, Bart-
item.contributorDu Prez, Filip-
item.validationecoom 2011-
item.accessRightsClosed Access-
crisitem.journal.issn0959-9428-
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