Modified chain dynamics in poly(dimethylsiloxane)/silica nanocomposites

Fragiadakis, D; Pissis, P; Bokobza, L

dc.contributor.author	Fragiadakis, D	en
dc.contributor.author	Pissis, P	en
dc.contributor.author	Bokobza, L	en
dc.date.accessioned	2014-03-01T01:24:39Z
dc.date.available	2014-03-01T01:24:39Z
dc.date.issued	2006	en
dc.identifier.issn	0022-3093	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17377
dc.subject	Dielectric properties	en
dc.subject	Glass transition	en
dc.subject	Nanoparticles	en
dc.subject	Polymers and organics	en
dc.subject	Relaxation, electric modulus	en
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Computer simulation	en
dc.subject.other	Dielectric relaxation	en
dc.subject.other	Glass transition	en
dc.subject.other	Molecular dynamics	en
dc.subject.other	Silica	en
dc.subject.other	Spectroscopic analysis	en
dc.subject.other	Synthesis (chemical)	en
dc.subject.other	Thin films	en
dc.subject.other	Dielectric relaxation spectroscopy	en
dc.subject.other	Electric modulus	en
dc.subject.other	Nanoconfined glass	en
dc.subject.other	Supercooled liquids	en
dc.subject.other	Nanostructured materials	en
dc.title	Modified chain dynamics in poly(dimethylsiloxane)/silica nanocomposites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jnoncrysol.2006.02.159	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jnoncrysol.2006.02.159	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	The molecular dynamics of a series of poly(dimethylsiloxane) networks filled with silica nanoparticles synthesized in situ was studied using dielectric relaxation spectroscopy. In addition to the alpha-relaxation associated with the glass transition of the polymer matrix, we observe a slower alpha-relaxation. This behavior is discussed in terms of a gradual increase of relaxation times close to the surface of the nanoparticles. The range of this effect is estimated to be around 3 nm at T-g decreasing slightly with increasing temperature. The results are discussed in rclation to molecular dynarnics simulations of supercooled liquids close to an interface, as well as experimental studies of nanoconfined -lass forming liquids and thin polymer films. (c) 2006 Elsevier B.V. All riolits reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Non-Crystalline Solids	en
dc.identifier.doi	10.1016/j.jnoncrysol.2006.02.159	en
dc.identifier.isi	ISI:000242821800102	en
dc.identifier.volume	352	en
dc.identifier.issue	42-49 SPEC. ISS.	en
dc.identifier.spage	4969	en
dc.identifier.epage	4972	en