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dc.contributor.authorMartins, Pedro
dc.contributor.authorCaparrós Vázquez, Cristina Maria
dc.contributor.authorGonçalves, Renato
dc.contributor.authorManuel, Pedro
dc.contributor.authorBenelmekki, Maria
dc.contributor.authorBotelho, Gabriela
dc.contributor.authorLanceros Méndez, Senentxu
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2014-05-07T09:43:54Z
dc.date.created2012-06-26
dc.date.issued2012-06-26
dc.identifier.citationMartins, P. [et al.]. Role of Nanoparticle Surface Charge on the Nucleation of the Electroactive ß-Poly(vinylidene ¿uoride) Nanocomposites for Sensor and Actuator Applications. "Journal of physical chemistry", 26 Juny 2012, vol. 116, núm. 29, p. 15790-15794.
dc.identifier.issn0022-3654
dc.identifier.urihttp://hdl.handle.net/2117/22877
dc.description.abstractThe electroactive ß-phase of poly(vinylidene fluoride) (PVDF) can be nucleated by introducing CoFe2O4 nanoparticles within the polymer matrix, leading to electroactive materials with large potential for sensor and actuator applications. The effects of the CoFe2O4 nanoparticle electrostatic charge on the phase crystallization of PVDF polymer is reported. For this purpose, CoFe2O4 nanoparticles were coated with anionic (SDS), nonanionic (Triton X-100), and cationic (CTAB) surfactants, and the obtained coated nanoparticles were used as fillers. It is found that the piezoelectric ß-form of the polymer increases when CoFe2O4 nanoparticles with higher negative electrostatic charge are added. This behavior is attributed to the interaction between the negatively charged magnetic particles and the polymer CH2 groups, having a positive charge density. Further the relationship between the ß-phase content and the piezoelectric response has been demonstrated. The magnetostriction of the ferrite nanoparticles and the proven piezoelectricity of the polymer allows the use of the material in piezoelectric and magnetoelectric sensors or/and actuators.
dc.format.extent5 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshNanocomposites (Materials)
dc.titleRole of Nanoparticle Surface Charge on the Nucleation of the Electroactive ß-Poly(vinylidene ¿uoride) Nanocomposites for Sensor and Actuator Applications
dc.typeArticle
dc.subject.lemacMaterials nanoestructurals
dc.identifier.doi10.1021/jp3038768
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://pubs.acs.org/doi/abs/10.1021/jp3038768
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac13636058
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorMartins, P.; Caparros, C.; Gonçalves, R.; Manuel, P.; Benelmekki, M.; Botelho, G.; Lanceros-Mendez, S.
local.citation.publicationNameJournal of physical chemistry
local.citation.volume116
local.citation.number29
local.citation.startingPage15790
local.citation.endingPage15794


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