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Kinetics of coarsening in immiscible poly (ε-caprolactone)/ poly(styrene-co-acrylonitrile) blends

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dc.title Kinetics of coarsening in immiscible poly (ε-caprolactone)/ poly(styrene-co-acrylonitrile) blends en
dc.contributor.author Jelínková, Lenka
dc.contributor.author Svoboda (FT), Petr
dc.contributor.author Sáha, Petr
dc.contributor.author Inoue, Takashi
dc.relation.ispartof Polymer Journal
dc.identifier.issn 0032-3896 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2012
utb.relation.volume 44
utb.relation.issue 2
dc.citation.spage 155
dc.citation.epage 161
dc.type article
dc.language.iso en
dc.publisher Society of Polymer Science, Japan (SPSJ) en
dc.identifier.doi 10.1038/pj.2011.110
dc.relation.uri http://www.nature.com/pj/journal/v44/n2/full/pj2011110a.html
dc.subject coarsening en
dc.subject poly(e-caprolactone) en
dc.subject poly(styrene-co- acrylonitrile) en
dc.subject polymer blend en
dc.description.abstract The morphological development of immiscible blends of poly(ε- caprolactone) (PCL) and poly(styrene-co-acrylonitrile) (SAN) during static annealing was studied using time-resolved light scattering and optical microscopy. In the melt-blended samples, coarsening was not observable at low temperatures, even above the glass transition temperature of SAN (T g=113 °C). It occurred when a critical temperature T* (for example, 170 °C for a PCL/SAN (50/50) blend) was reached. T* was found to have a strong dependence on the blend composition, and we suggest that this results from an effect of the large difference in viscosities of pure PCL and SAN on the particle collision rate. The morphological development of solution-prepared blends was found to differ greatly from that of the melt-blended samples. At first, spinodal decomposition (SD) began, and then collision kinetics prevailed over SD. After the particles grew to a size of approximately 10 μm, secondary SD took place and small domains (∼1 μm) appeared in both the matrix and the particles. Consequently, the overall coarsening behavior varied significantly from the predictions of current theories. © 2012 The Society of Polymer Science, Japan (SPSJ) All rights reserved. en
utb.faculty Faculty of Technology
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1002736
utb.identifier.rivid RIV/70883521:28110/12:43866856!RIV13-MSM-28110___
utb.identifier.rivid RIV/70883521:28610/12:43866856!RIV13-MSM-28610___
utb.identifier.obdid 43867060
utb.identifier.scopus 2-s2.0-84856837131
utb.identifier.wok 000300407800003
utb.identifier.coden POLJB
utb.source j-scopus
dc.date.accessioned 2012-03-12T09:40:00Z
dc.date.available 2012-03-12T09:40:00Z
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Jelínková, Lenka
utb.contributor.internalauthor Svoboda (FT), Petr
utb.contributor.internalauthor Sáha, Petr
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