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Radiation induced modification of dielectric and structural properties of Cu/PMMA polymer composites

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dc.contributor.authorGÜLLÜOĞLU, ARİF NİHAT
dc.contributor.authorsSingh, Dolly; Singh, N. L.; Qureshi, Anjum; Kulriya, P.; Tripathi, Ambuj; Avasthi, D. K.; Gulluoglu, Arif N.
dc.date.accessioned2022-03-12T17:48:42Z
dc.date.available2022-03-12T17:48:42Z
dc.date.issued2010
dc.description.abstractIn this study, composite films consisting of an insulating polymethyl methacrylate (PMMA) polymer matrix and metal powder (Cu) additive were prepared by solution costing method. These films were irradiated with 140 MeV silver ions at the fluences of 1 x 10(11) ions/cm(2) and 1 x 10(12) ions/cm2. The radiation induced changes in dielectric, structural and surface properties of PMMA/Cu composites were studied using impedance/gain phase-analyzer, X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). It was observed that the dielectric properties and ac electrical conductivity increased significantly with the concentration of dispersed metal powder (Cu) and also with the fluence. This reveals that ion beam irradiation creates free radicals, unsaturation etc. due to emission of hydrogen and/or other volatile gases, which makes the polymer more conductive. XRD analysis of the pristine and irradiated samples shows that the crystallinity improved upon irradiation at low fluence and deteriorated on further increase of the fluence, which could be attributed to cross linking of polymer chains at low fluence and degradation at higher fluence. High energy ion beam irradiation of semicrystalline polymer composite films changes its Tg behavior as observed from DSC analysis. This result is also corroborated with the results of XRD. The average surface roughness and topography of surfaces changed with the concentration of filler and also with the ion fluence as revealed from AFM/SEM analysis. (C) 2010 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.jnoncryso1.2010.01.006
dc.identifier.eissn1873-4812
dc.identifier.issn0022-3093
dc.identifier.urihttps://hdl.handle.net/11424/229999
dc.identifier.wosWOS:000276714000004
dc.language.isoeng
dc.publisherELSEVIER SCIENCE BV
dc.relation.ispartofJOURNAL OF NON-CRYSTALLINE SOLIDS
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectMeasurement techniques
dc.subjectPolymers and organics
dc.subjectRadiation
dc.subjectThermal properties
dc.subjectELECTRICAL-CONDUCTIVITY
dc.subjectBLACK COMPOSITE
dc.subjectPVA/PPY BLENDS
dc.subjectFILLED POLYMER
dc.subjectTHIN-FILMS
dc.subjectIRRADIATION
dc.subjectBEHAVIOR
dc.subjectMATRIX
dc.titleRadiation induced modification of dielectric and structural properties of Cu/PMMA polymer composites
dc.typearticle
dspace.entity.typePublication
local.avesis.id9dfceb7f-23ca-4197-bebf-2618a266852a
local.import.packageSS17
local.indexed.atWOS
local.journal.numberofpages8
oaire.citation.endPage863
oaire.citation.issue18-19
oaire.citation.startPage856
oaire.citation.titleJOURNAL OF NON-CRYSTALLINE SOLIDS
oaire.citation.volume356
relation.isAuthorOfPublication7da786ed-9363-4dbb-a622-162981938621
relation.isAuthorOfPublication.latestForDiscovery7da786ed-9363-4dbb-a622-162981938621

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