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Molecular mobility in biodegradable poly(epsilon-caprolactone)/poly(hydroxyethyl acrylate) networks

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dc.contributor.author Serra, RSI en
dc.contributor.author Kyritsis, A en
dc.contributor.author Ivirico, JLE en
dc.contributor.author Ribelles, JLG en
dc.contributor.author Pissis, P en
dc.contributor.author Salmeron-Sanchez, M en
dc.date.accessioned 2014-03-01T02:05:26Z
dc.date.available 2014-03-01T02:05:26Z
dc.date.issued 2011 en
dc.identifier.issn 1292-8941 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/29477
dc.subject.classification Chemistry, Physical en
dc.subject.classification Materials Science, Multidisciplinary en
dc.subject.classification Physics, Applied en
dc.subject.classification Polymer Science en
dc.subject.other DIELECTRIC-RELAXATION SPECTROSCOPY en
dc.subject.other INTERPENETRATING POLYMER NETWORKS en
dc.subject.other POLYCARBONATE/POLY(EPSILON-CAPROLACTONE) BLENDS en
dc.subject.other ISOTHERMAL CRYSTALLIZATION en
dc.subject.other AMORPHOUS PHASE en
dc.subject.other WATER SORPTION en
dc.subject.other HYDROGELS en
dc.subject.other TRANSITION en
dc.subject.other DYNAMICS en
dc.subject.other MISCIBILITY en
dc.title Molecular mobility in biodegradable poly(epsilon-caprolactone)/poly(hydroxyethyl acrylate) networks en
heal.type journalArticle en
heal.identifier.secondary 37 en
heal.language English en
heal.publicationDate 2011 en
heal.abstract Poly(epsilon-caprolactone)/poly(hydroxyethyl acrylate) networks have been investigated by thermally stimulated depolarization currents (TSDC) and differential scanning calorimetry (DSC). The introduction of hydrophilic units (HEA) in the system aiming at tailoring the hydrophilicity of the system results in a series of copolymer networks with microphase separation into hydrophobic/hydrophilic domains. Polycaprolactone (PCL) crystallization is prevented by the topological constraints HEA units imposed in such heterogeneous domains. Moreover, the mobility of the amorphous PCL chains is enhanced as revealed by the main relaxation process which becomes faster. The glass transition of PHEA-rich domains shifts to lower temperatures, as the total amount of PCL in the copolymer increases, due to the presence of PCL units within the same region. The behaviour of the copolymer networks swollen with different content of water has been investigated to analyze the interaction between water molecules and hydrophobic/hydrophilic domains and provide further insights into the molecular structure of the system. en
heal.publisher SPRINGER en
heal.journalName EUROPEAN PHYSICAL JOURNAL E en
dc.identifier.isi ISI:000290537800004 en
dc.identifier.volume 34 en
dc.identifier.issue 4 en


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