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¿-Phase nucleation and electrical response of poly(vinylidene fluoride)/microporous titanosilicates composites

Identificadores del recurso

Caparros, C. [et al.]. ¿-Phase nucleation and electrical response of poly(vinylidene fluoride)/microporous titanosilicates composites. "Materials chemistry and physics", 09 Desembre 2012, vol. 138, núm. 2-3, p. 553-558.

0254-0584

http://hdl.handle.net/2117/22876

10.1016/j.matchemphys.2012.12.018

Procedencia

(Universitat Politècnica de Catalunya. UPCommons - Recerca)

Ficha

Título:: ¿-Phase nucleation and electrical response of poly(vinylidene fluoride)/microporous titanosilicates composites
Tema:: Àrees temàtiques de la UPC::Enginyeria dels materials; Composite materials; Nanostructures--Thermal properties; Nanostructures; Thermal properties; Electrical properties; Materials compostos; Nanoestructures
Descripción:: 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 ¿-phase when the sample is melted at temperatures below 200 °C. 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 1 kHz. 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.; Peer Reviewed; Postprint (published version)
Idioma:: English
Relación:: http://www.sciencedirect.com/science/article/pii/S0254058412010516#
Autor/Productor:: Caparrós Vázquez, Cristina Maria; Lopes, Ana Catarina; Ferdov, Stanislav; Lanceros Méndez, Senentxu
Otros colaboradores/productores:: Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
Derechos:: Attribution-NonCommercial-NoDerivs 3.0 Spain; http://creativecommons.org/licenses/by-nc-nd/3.0/es/; Restricted access - publisher's policy
Fecha:: 2012-12-09
Tipo de recurso:: Article
Formato:: 6 p.; application/pdf

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3. < dc:creator > Lopes, Ana Catarina </ dc:creator >
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5. < dc:creator > Lanceros Méndez, Senentxu </ dc:creator >
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  3. < dc:creator > Lopes, Ana Catarina </ dc:creator >
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