Dielectric relaxation of water in the water-methylcellulose system

Pissis, P; Daoukaki-Daimanti, D

dc.contributor.author	Pissis, P	en
dc.contributor.author	Daoukaki-Daimanti, D	en
dc.date.accessioned	2014-03-01T01:39:23Z
dc.date.available	2014-03-01T01:39:23Z
dc.date.issued	1988	en
dc.identifier.issn	03010104	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/22755
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0001300021&partnerID=40&md5=e81159edca401a0e0ca86ad6a3d90e2d	en
dc.title	Dielectric relaxation of water in the water-methylcellulose system	en
heal.type	journalArticle	en
heal.publicationDate	1988	en
heal.abstract	Thermally stimulated depolarization current (TSDC) measurements on frozen methylcellulose aqueous solutions in a wide concentration range, c = 0.025-2.0 g/ℓ, and on hydrated methylcellulose solid samples in a wide range of water contents, h = 1.8-48.1%, show a complex dispersion in the temperature range 100-160 K. The dispersion is attributed to orientational polarization of water molecules: free and loosely bound water molecules in the solutions and loosely bound water molecules in the solid samples. The dielectric relaxation of water molecules sorbed in the solid samples was studied in detail. It is described by a continuous distribution of relaxation times with both the activation energy W and the pre-exponential factor τ0 in the Arrhenius equation being distributed parameters. The results suggest hydration in multilayers. © 1988.	en
heal.journalName	Chemical Physics	en
dc.identifier.volume	123	en
dc.identifier.issue	1	en
dc.identifier.spage	165	en
dc.identifier.epage	173	en