Structure-property relationships in segmented polyurethanes with metal chelates in the main chain

Georgoussis, G; Kanapitsas, A; Pissis, P; Savelyev, YV; Veselov, VY; Privalko, EG

dc.contributor.author	Georgoussis, G	en
dc.contributor.author	Kanapitsas, A	en
dc.contributor.author	Pissis, P	en
dc.contributor.author	Savelyev, YV	en
dc.contributor.author	Veselov, VY	en
dc.contributor.author	Privalko, EG	en
dc.date.accessioned	2014-03-01T01:15:54Z
dc.date.available	2014-03-01T01:15:54Z
dc.date.issued	2000	en
dc.identifier.issn	0014-3057	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13811
dc.subject	Complex Permittivity	en
dc.subject	Dielectric Relaxation	en
dc.subject	Differential Scanning Calorimetry	en
dc.subject	Glass Transition	en
dc.subject	Metal Ion	en
dc.subject	Small Angle X Ray Scattering	en
dc.subject	Structural Properties	en
dc.subject	Time Scale	en
dc.subject.classification	Polymer Science	en
dc.subject.other	NUCLEAR-MAGNETIC-RESONANCE	en
dc.subject.other	GLASS-TRANSITION	en
dc.subject.other	DIELECTRIC-RELAXATION	en
dc.subject.other	BLOCK-COPOLYMERS	en
dc.subject.other	POLYMER ELECTROLYTES	en
dc.subject.other	END GROUPS	en
dc.subject.other	CONDUCTIVITY	en
dc.subject.other	SPECTROSCOPY	en
dc.subject.other	DIFFUSION	en
dc.subject.other	HYDROGELS	en
dc.title	Structure-property relationships in segmented polyurethanes with metal chelates in the main chain	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0014-3057(99)00177-9	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0014-3057(99)00177-9	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	The relationships between structure and morphology on the one hand and molecular mobility on the other hand in segmented polyurethanes (SPU) based on oligo-oxytetramethylene glycol with metal ions (Cu, Ni) incorporated in the chains (SPU metal chelates) were investigated by means of differential scanning calorimetry (DSC), small-angle X-ray scattering, water sorption and diffusion measurements, thermally stimulated depolarization currents (TSDC) techniques and broadband (10(-2) to 10(9) Hz) dielectric relaxation spectroscopy (DRS). These systems may be considered as models for the investigation of single ionic (anionic) conductivity. The various techniques employed provided several indications that the degree of microphase separation into hard-segment microdomains and soft-segment microphase is higher in the system with Ni than with Cu ions. The relationships between DSC, TSDC and DRS, with respect to characteristic time scales, were investigated on the basis of Arrhenius plot for the cc relaxation associated with the glass transition of soft-segment microphase. Conductivity effects were studied within the formalisms of complex permittivity and complex electric modulus. (C) 2000 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	EUROPEAN POLYMER JOURNAL	en
dc.identifier.doi	10.1016/S0014-3057(99)00177-9	en
dc.identifier.isi	ISI:000085986000004	en
dc.identifier.volume	36	en
dc.identifier.issue	6	en
dc.identifier.spage	1113	en
dc.identifier.epage	1126	en