Structure and segmental dynamics heterogeneity in hybrid polycyanurate-polyurethane networks

Bershtein, VA; Egorova, LM; Ryzhov, VA; Yakushev, PN; Fainleib, AM; Shantalii, TA; Pissis, P

dc.contributor.author	Bershtein, VA	en
dc.contributor.author	Egorova, LM	en
dc.contributor.author	Ryzhov, VA	en
dc.contributor.author	Yakushev, PN	en
dc.contributor.author	Fainleib, AM	en
dc.contributor.author	Shantalii, TA	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:17:09Z
dc.date.available	2014-03-01T01:17:09Z
dc.date.issued	2001	en
dc.identifier.issn	0022-2348	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14378
dc.subject	hybrid materials	en
dc.subject	polymer networks	en
dc.subject	dynamic heterogeneity	en
dc.subject	glass transition	en
dc.subject.classification	Polymer Science	en
dc.subject.other	HETEROCYCLIC POLYMER NETWORKS	en
dc.subject.other	NUCLEAR-MAGNETIC-RESONANCE	en
dc.subject.other	CREEP RATE SPECTROSCOPY	en
dc.subject.other	GLASS-TRANSITION	en
dc.subject.other	LINEAR POLYURETHANE	en
dc.subject.other	LASER INTERFEROMETER	en
dc.subject.other	BLOCK-COPOLYMERS	en
dc.subject.other	MISCIBLE BLENDS	en
dc.subject.other	CHAIN DYNAMICS	en
dc.subject.other	COMMON NATURE	en
dc.title	Structure and segmental dynamics heterogeneity in hybrid polycyanurate-polyurethane networks	en
heal.type	journalArticle	en
heal.identifier.primary	10.1081/MB-100000057	en
heal.identifier.secondary	http://dx.doi.org/10.1081/MB-100000057	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Structure and segmental dynamics (at 140-600 K) in a series of hybrid materials with regularly varied composition, based on polycyanurate (PCN) networks and linear polyurethane (PUR), were studied by infrared spectroscopy, small-angle X-ray scattering, differential scanning calorimetry, and laser-interferometric creep rate spectroscopy (CRS) techniques. Hybridization effect via cyanate/urethane group chemical interaction was evidenced in these systems and that led to formation of a completely homogeneous structure on a scale of > 2 nm, irrespective of material composition. At the same time, combined CRS/differential scanning calorimetry analysis indicated the pronounced nanoscale (less than or equal to2 nm) dynamic heterogeneity within or below the extraordinarily broad glass transition in these single-phase materials. Discrete CRS analysis of constituent motions, associated with the predicted kinds of polyurethane segmental relaxations (cooperative and noncooperative) and with the dynamics in differ entry cross-linked PCN network sections, has been performed.	en
heal.publisher	MARCEL DEKKER INC	en
heal.journalName	JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS	en
dc.identifier.doi	10.1081/MB-100000057	en
dc.identifier.isi	ISI:000167676800008	en
dc.identifier.volume	B40	en
dc.identifier.issue	1	en
dc.identifier.spage	105	en
dc.identifier.epage	131	en