Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics

Bershtein, VA; Egorov, VM; Egorova, LM; Yakushev, PN; David, L; Sysel, P; Sindelar, V; Pissis, P

dc.contributor.author	Bershtein, VA	en
dc.contributor.author	Egorov, VM	en
dc.contributor.author	Egorova, LM	en
dc.contributor.author	Yakushev, PN	en
dc.contributor.author	David, L	en
dc.contributor.author	Sysel, P	en
dc.contributor.author	Sindelar, V	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:18:13Z
dc.date.available	2014-03-01T01:18:13Z
dc.date.issued	2002	en
dc.identifier.issn	0032-3861	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14872
dc.subject	Constrained dynamics	en
dc.subject	Hybrid polymer networks	en
dc.subject	Poly(ethylene adipate)-crosslinked poly(imide-amide)	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Glass transition	en
dc.subject.other	Nanostructured materials	en
dc.subject.other	Polyamideimides	en
dc.subject.other	Polyethylenes	en
dc.subject.other	Segmental dynamics	en
dc.subject.other	Polymers	en
dc.subject.other	glass	en
dc.subject.other	polyamide	en
dc.subject.other	polyethylene derivative	en
dc.subject.other	polyimide	en
dc.subject.other	article	en
dc.subject.other	chemical composition	en
dc.subject.other	creep rate spectroscopy	en
dc.subject.other	cross linking	en
dc.subject.other	dispersion	en
dc.subject.other	energy	en
dc.subject.other	hybrid	en
dc.subject.other	molecular dynamics	en
dc.subject.other	phase transition	en
dc.subject.other	spectroscopy	en
dc.subject.other	structure analysis	en
dc.subject.other	X ray crystallography	en
dc.subject.other	polymer science	en
dc.title	Poly(imide-amide)-poly(ethylene adipate) hybrid networks. I. Nanostructure and segmental dynamics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0032-3861(02)00665-1	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0032-3861(02)00665-1	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Segmental dynamics at 200-500 K and nanometer-scale structure were studied by SAXS, DSC and creep rate spectroscopy (CRS) techniques in two series of poly(ethylene adipate)-crosslinked poly(imide-amide)s with regularly varied composition and different lengths of PEA crosslinks (M-n = 1.300 and 2.700 g mol(-1)). The crystallization ability was observed in networks with longer PEA crosslinks. Shorter PEA crosslinks induced non-crystalline, nanostructured PIA-PEA networks. Combined DSC/CRS analysis indicated the pronounced heterogeneity of segmental dynamics in the latter networks. The wide dispersions of motional activation energies within the glass transitions were found by DSC, and manifestation of a few constituent segmental motions was shown in the creep rate spectra. The observed effects could be explained in terms of (i) the different constraining influence of PIA rigid constituents on dynamics in PEA crosslinks, and (ii) the breakdown of motional cooperativity as a result of loosening of PEA chain packing in presence of the PIA rigid nanodomains. (C) 2002 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Polymer	en
dc.identifier.doi	10.1016/S0032-3861(02)00665-1	en
dc.identifier.isi	ISI:000179075700034	en
dc.identifier.volume	43	en
dc.identifier.issue	25	en
dc.identifier.spage	6943	en
dc.identifier.epage	6953	en