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Structure-property relationships in novel poly(imide-amide)-poly(ethylene glycol) hybrid networks

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dc.contributor.author Kripotou, S en
dc.contributor.author Pissis, P en
dc.contributor.author Sysel, P en
dc.contributor.author Sindelar, V en
dc.contributor.author Bershtein, VA en
dc.date.accessioned 2014-03-01T01:25:12Z
dc.date.available 2014-03-01T01:25:12Z
dc.date.issued 2006 en
dc.identifier.issn 0032-3861 en
dc.identifier.uri http://hdl.handle.net/123456789/17597
dc.subject Dielectric techniques en
dc.subject Hybrid polymer networks en
dc.subject Molecular mobility en
dc.subject.classification Polymer Science en
dc.subject.other Crystallization en
dc.subject.other Dielectric relaxation en
dc.subject.other Differential scanning calorimetry en
dc.subject.other Glass transition en
dc.subject.other Morphology en
dc.subject.other Spectroscopic analysis en
dc.subject.other Dielectric relaxation spectroscopy (DRS) en
dc.subject.other Dielectric techniques en
dc.subject.other Hybrid polymer networks en
dc.subject.other Molecular mobility en
dc.subject.other Thermally stimulated depolarization currents (TSDC) en
dc.subject.other Polyethylene glycols en
dc.subject.other polymer science en
dc.title Structure-property relationships in novel poly(imide-amide)-poly(ethylene glycol) hybrid networks en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.polymer.2005.11.012 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.polymer.2005.11.012 en
heal.language English en
heal.publicationDate 2006 en
heal.abstract Broadband dielectric relaxation spectroscopy (DRS), thermally stimulated depolarisation currents (TSDC), differential scanning calorimetry (DSC) and to a lesser extent water uptake measurements, were employed to investigate molecular mobility, morphology and crystallization/melting events of PEG in poly(imide-amide)-polyethylene glycol hybrid networks (PIA-PEG) with short (M-n = 1000 g/mol) and long (M-n. = 3400 g/mol) PEG crosslinks. The results obtained suggest long range connectivity of the PEG component in the hybrids with short PEG crosslinks at PEG content higher than 40 wt% and in these with long PEG crosslinks at PEG content higher that] 20 wt%. Crystallization of the PEG component is observed by DSC in the hybrids with the longer crosslinks at sufficiently high content of PEG, only, The glass transition temperature, T-g, of PEG component in the hybrids with the shorter PEG crosslinks is shifted to higher temperatures compared to that of the hybrids with longer PEG crosslinks, while suppression of the glass transition of the PEG component is observed in the hybrids with the shorter PEG crosslinks at PEG content lower than 40 wt%. The results are discussed in terms of constraints to segmental motion of the PEG crosslinks, imposed by fixed PEG chain ends on the rigid PI chains. (c) 2005 Elsevier Ltd. All rights reserved. en
heal.publisher ELSEVIER SCI LTD en
heal.journalName Polymer en
dc.identifier.doi 10.1016/j.polymer.2005.11.012 en
dc.identifier.isi ISI:000234617600047 en
dc.identifier.volume 47 en
dc.identifier.issue 1 en
dc.identifier.spage 357 en
dc.identifier.epage 366 en


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