Temperature and pressure effects on molecular mobility and ionic conductivity in telechelics based on poly(ethylene oxide) capped with hydroxyl groups at both ends

Polizos, G; Shilov, VV; Pissis, P

dc.contributor.author	Polizos, G	en
dc.contributor.author	Shilov, VV	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T02:42:10Z
dc.date.available	2014-03-01T02:42:10Z
dc.date.issued	2002	en
dc.identifier.issn	0022-3093	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30830
dc.subject	Dielectric Relaxation	en
dc.subject	Glass Transition	en
dc.subject	Glass Transition Temperature	en
dc.subject	Ionic Conductivity	en
dc.subject	Pressure Effect	en
dc.subject	Poly Ethylene Oxide	en
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Electric conductivity	en
dc.subject.other	Glass transition	en
dc.subject.other	Ionic conduction	en
dc.subject.other	Pressure effects	en
dc.subject.other	Protons	en
dc.subject.other	Spectroscopic analysis	en
dc.subject.other	Dielectric relaxation spectroscopy (DRS)	en
dc.subject.other	Polyphenylene oxides	en
dc.title	Temperature and pressure effects on molecular mobility and ionic conductivity in telechelics based on poly(ethylene oxide) capped with hydroxyl groups at both ends	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/S0022-3093(02)01108-0	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0022-3093(02)01108-0	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Functionalized telechelics based on poly(ethylene oxide) capped with OH-groups, with protons (H+) in the terminals have been prepared and the effects of structure on molecular mobility and protonic conductivity have been investigated. Molecular mobility and protonic conductivity were measured by means of broadband dielectric relaxation spectroscopy (10(-2)-10(9) Hz). Pressure effects were also studied by using a multianvil apparatus to generate conditions up to 5 kbar. The features of relaxation, associated to the glass transition, and of dc conductivity sigma(dc), determined from ac conductivity (sigma(ac)(f)) plots, were analysed in detail. Protonic conductivity is governed by the motion of the polymeric chains, however a decoupling between translational and rotational motion is observed, as the temperature decreases towards the glass transition temperature. Dc conductivity was found to decrease with increasing pressure. (C) 2002 Elsevier Science B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Non-Crystalline Solids	en
dc.identifier.doi	10.1016/S0022-3093(02)01108-0	en
dc.identifier.isi	ISI:000176261600027	en
dc.identifier.volume	305	en
dc.identifier.issue	1-3	en
dc.identifier.spage	212	en
dc.identifier.epage	217	en