Highly conducting poly(methyl methacrylate)/carbon nanotubes composites: Investigation on their thermal, dynamic-mechanical, electrical and dielectric properties

Logakis, E; Pandis, CH; Pissis, P; Pionteck, J; Potschke, P

dc.contributor.author	Logakis, E	en
dc.contributor.author	Pandis, CH	en
dc.contributor.author	Pissis, P	en
dc.contributor.author	Pionteck, J	en
dc.contributor.author	Potschke, P	en
dc.date.accessioned	2014-03-01T01:35:48Z
dc.date.available	2014-03-01T01:35:48Z
dc.date.issued	2011	en
dc.identifier.issn	0266-3538	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21200
dc.subject	A. Carbon nanotubes	en
dc.subject	A. Nano composites	en
dc.subject	B. Electrical properties	en
dc.subject	B. Thermomechanical properties	en
dc.subject.classification	Materials Science, Composites	en
dc.subject.other	A. Carbon nanotubes	en
dc.subject.other	B. Electrical properties	en
dc.subject.other	Carbon nanotubes composites	en
dc.subject.other	Crystallinities	en
dc.subject.other	Dc conductivity measurements	en
dc.subject.other	Dielectric relaxation spectroscopy	en
dc.subject.other	Electrical and dielectric properties	en
dc.subject.other	Electrical percolation threshold	en
dc.subject.other	EMI shielding	en
dc.subject.other	High conductivity	en
dc.subject.other	Maximum values	en
dc.subject.other	Melt mixing	en
dc.subject.other	PMMA matrices	en
dc.subject.other	Polymer-filler- Interaction	en
dc.subject.other	Temperature range	en
dc.subject.other	Thermomechanical properties	en
dc.subject.other	Dielectric properties of solids	en
dc.subject.other	Differential scanning calorimetry	en
dc.subject.other	Dynamic mechanical analysis	en
dc.subject.other	Dynamics	en
dc.subject.other	Esters	en
dc.subject.other	Filled polymers	en
dc.subject.other	Fillers	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Multiwalled carbon nanotubes (MWCN)	en
dc.subject.other	Nanocomposites	en
dc.subject.other	Solvents	en
dc.subject.other	Spectroscopy	en
dc.subject.other	Electric properties	en
dc.title	Highly conducting poly(methyl methacrylate)/carbon nanotubes composites: Investigation on their thermal, dynamic-mechanical, electrical and dielectric properties	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.compscitech.2011.01.029	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.compscitech.2011.01.029	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Nanocomposites of poly(methyl methacrylate) (PMMA) containing various multi-walled carbon nanotubes (MWCNT) contents were prepared using melt mixing. Several techniques were employed to study the influence of the MWCNT addition on the thermal, mechanical, electrical and dielectric properties of the PMMA matrix. The electrical percolation threshold (p(c)) was found to be 0.5 vol.% by performing AC and DC conductivity measurements. Significantly high conductivity levels (sigma(dc)) were achieved: ad, exceeds 10(-2) S/cm already at 1.1 vol.%, the criterion for EMI shielding (sigma(dc) > 10(-1) S/cm) is fulfilled at 2.9 vol.%, and the highest loaded sample (5.2 vol.%) gave a maximum value of 0.5 S/cm. Dielectric relaxation spectroscopy measurements in broad frequency (10(-1)-10(6) Hz) and temperature ranges (-150 to 170 degrees C) indicated weak polymer-filler interactions, in consistency with differential scanning calorimetry and dynamic-mechanical analysis findings. Weak polymer-filler interactions and absence of crystallinity facilitate the achievement of high conductivity levels in the nanocomposites. (C) 2011 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Composites Science and Technology	en
dc.identifier.doi	10.1016/j.compscitech.2011.01.029	en
dc.identifier.isi	ISI:000289921000010	en
dc.identifier.volume	71	en
dc.identifier.issue	6	en
dc.identifier.spage	854	en
dc.identifier.epage	862	en