Structure and electrical conductivity in novel polyurethane ionomers

Polizos, G; Georgoussis, G; Kyritsis, A; Shilov, VV; Shevchenko, VV; Gomza, YP; Nesin, SD; Klimenko, NS; Wartewig, S; Pissis, P

dc.contributor.author	Polizos, G	en
dc.contributor.author	Georgoussis, G	en
dc.contributor.author	Kyritsis, A	en
dc.contributor.author	Shilov, VV	en
dc.contributor.author	Shevchenko, VV	en
dc.contributor.author	Gomza, YP	en
dc.contributor.author	Nesin, SD	en
dc.contributor.author	Klimenko, NS	en
dc.contributor.author	Wartewig, S	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:50:23Z
dc.date.available	2014-03-01T01:50:23Z
dc.date.issued	2000	en
dc.identifier.issn	0959-8103	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26027
dc.subject	ionomers	en
dc.subject	microphase separation	en
dc.subject	ionic aggregation	en
dc.subject	crystallization	en
dc.subject	ionic conductivity	en
dc.subject.classification	Polymer Science	en
dc.subject.other	RAY-SCATTERING DATA	en
dc.subject.other	MORPHOLOGY	en
dc.subject.other	MODEL	en
dc.title	Structure and electrical conductivity in novel polyurethane ionomers	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	Novel polyurethane (PU) ionomers based on poly(teramethylene oxide) (PTMO) or poly(ethylene oxide) (PEG), with nonionic hard segments of varying length and flexible segments containing sodium ions (Nat), have been prepared and their structure-property relationships have been investigated. The structure and the morphology were studied by means of differential scanning calorimetry (DSC), infrared (IR) spectroscopy and small-angle X-ray scattering (SAXS). Ionic conductivity was studied by means of broadband dielectric relaxation spectroscopy (DRS, 10(-2)-10(9)Hz). PTMO-based ionomers are characterized by the coexistence of segment microphase separation and ionic group segregation morphologies. In the PEG-based ionomers, crystallization is observed at low hard segment content, with a tendency for crystallization to decrease upon hard segment extension. Values of ionic conductivity are in the range 10(-7) Sm-1 to 10(-4)Sm(-1) at 323 K for PU ionomers based on PTMO and PEG, respectively. (C) 2000 Society of Chemical Industry.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	POLYMER INTERNATIONAL	en
dc.identifier.isi	ISI:000088986200015	en
dc.identifier.volume	49	en
dc.identifier.issue	9	en
dc.identifier.spage	987	en
dc.identifier.epage	992	en