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Title: Thermal degradation of Pb(Zr0.53Ti0.47 )O-3/poly(vinylidene fluoride) composites as a function of ceramic grain size and concentration
Author: Mendes, Sergio Firmino
Costa, Carlos Miguel
Sencadas, Vitor
Pereira, Mario
Wu, Aiying
Vilarinho, Paula Maria
Gregorio, Rinaldo, Jr.
Lanceros-Mendez, Senentxu
Issue Date: 2013
Publisher: SPRINGER
Abstract: Poly(vinylidene fluoride)/Pb(Zr0.53Ti0.47)O-3,([PVDF](1-x)/[PZT](x)) composites of volume fractions x and (0-3) type connectivity were prepared in the form of thin films. PZT powders with average grain sizes of 0.2, 0.84, and 2.35 mu m in different volume fraction of PZT up to 40 % were mixed with the polymeric matrix. The influence of the inorganic particle size and its content on the thermal degradation properties of the composites was then investigated by means of thermo-gravimetric analysis. It is observed that filler size affects more than filler concentration the degradation temperature and activation energy of the polymer. In the same way and due to their larger specific area, smaller particles leave larger solid residuals after the polymer degradation. The polymer degradation mechanism is not significantly modified by the presence of the inorganic fillers. On the other hand, an inhibition effect occurs due to the presence of the fillers, affecting particularly the activation energy of the process.
Peer review: yes
DOI: 10.1007/s10973-012-2918-x
ISSN: 1388-6150
Publisher Version: 10.1007/s10973-012-2918-x
Appears in Collections:CICECO - Artigos

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