Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/22669

TitleEffect of zeolite content in the electrical, mechanical and thermal degradation response of poly(vinylidene fluoride)/NaY zeolite composites
Author(s)Lopes, A. C.
Gonçalves, Renato Ferreira
Costa, C. M.
Fonseca, A. Maurício C.
Botelho, Gabriela
Neves, Isabel C.
Lanceros-Méndez, S.
KeywordsZeolites
Electroctive polymers
Nanocomposites
Electrical response
Electroactive Polymers
Issue dateAug-2012
PublisherAmerican Scientific Publishers
JournalJournal of Nanoscience and Nanotechnology
Abstract(s)Polymer based composites of α-PVDF doped with different NaY zeolite (Na53Al53Si139O384) content were investigated. A good dispersion of NaY zeolite within the polymer matrix is achieved. The introduction of NaY nanoparticles enhance the storage modulus and the dielectric constant at room temperature. The dielectric constant at room temperature increases up to the value of 500 for the 32 wt% composite, at 1 kHz. The increase of the dielectric constant is mainly attributed to interfacial polarization effects. For increasing zeolite content, the nanocomposite conductivity shows two conducting regimes separted by the so called breaking voltage, which is associated to an intrazeolite charge transport. Thermogravimetric results show that the introduction of zeolites affects the thermal degradation of the polymer for low zeolite contents and also indicate the presence of water that also plays an important role in the electrical response of the materials.
TypeArticle
URIhttp://hdl.handle.net/1822/22669
DOI10.1166/jnn.2012.4574
ISSN1533-4880
Publisher versionhttp://www.ingentaconnect.com/content/asp/jnn/2012/00000012/00000008/art00108
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

Files in This Item:
File Description SizeFormat 
JNN_zeolites.pdf
  Restricted access
710,07 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID