Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/26900
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Caparrós Vásquez, Cristina Maria | - |
dc.contributor.author | Lopes, A. C. | - |
dc.contributor.author | Ferdov, S. | - |
dc.contributor.author | Lanceros-Méndez, S. | - |
dc.date.accessioned | 2013-12-11T14:41:56Z | - |
dc.date.available | 2013-12-11T14:41:56Z | - |
dc.date.issued | 2013 | - |
dc.identifier.issn | 0254-0584 | por |
dc.identifier.uri | https://hdl.handle.net/1822/26900 | - |
dc.description.abstract | Microporous titanosilicates ETS-10, ETS-4 and GTS-1 were applied in the preparation of poly(vinylidene fluoride), PVDF, composites by solvent casting and melt crystallization. The spherulitic microstructure of neat PVDF is maintained but the crystallization phase is altered to the piezoelectric y-phase when the sample is melted at temperatures below 200ºC. The crystallinity and the temperature of polymer degradation are hardly influenced by the introduced titanosilicates, however ETS-4 incorporated in the polymer showed improved thermal stability. The dimensional characteristics of the porous framework, different confined mobility of the charge compensating cations and the interfacial polarization led to gradually increased dielectric constant that reached values of 18 at 1kHz. This behavior was accompanied by increased dielectric losses and a.c. conductivity. The reported PVDF/microporous titanosilicate composites represent a new class of materials with application potential for sensors and actuators. | por |
dc.description.sponsorship | This work is funded by FEDER funds through the "Programa Operacional Factores de Competitividade – COMPETE" and by national funds by FCT- Fundação para a Ciência e a Tecnologia, project references NANO/NMed-SD/0156/2007, PTDC/CTM/69316/2006 and PTDC/CTM-NAN/112574/2009. ACL thanks the support of the FCT under grant SFRH/BD/62507/2009. The authors thank support from the COST Action MP1003 ‘European Scientific Network for Artificial Muscles’ (ESNAM). S. Ferdov thanks the support of the FCT project PTDC/CTM/108953/2008 and SEMAT at the UM. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier Science SA | por |
dc.rights | restrictedAccess | por |
dc.subject | Microporous titanosilicates | por |
dc.subject | Electroactive polymers | por |
dc.subject | PVDF | por |
dc.subject | Electrical properties | por |
dc.subject | Composite materials | por |
dc.subject | Nanostructures | por |
dc.subject | Thermal properties | por |
dc.title | gamma-phase nucleation and electrical response of poly(vinylidene fluoride)/microporous titanosilicates composites | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 553 | por |
oaire.citationEndPage | 558 | por |
oaire.citationIssue | 2-3 | por |
oaire.citationTitle | Materials Chemistry and Physics | por |
oaire.citationVolume | 138 | por |
dc.identifier.doi | 10.1016/j.matchemphys.2012.12.018 | - |
dc.subject.wos | Science & Technology | por |
sdum.journal | Materials Chemistry and Physics | por |
Aparece nas coleções: | CDF - FCD - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Titanossilicates_PVDF_F.pdf Acesso restrito! | paper | 913,38 kB | Adobe PDF | Ver/Abrir |