Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of β-crystal polymorph rich matrix through mechanical activation of the filler
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2014
Authors
Mofokeng, Tladi G.Luyt, Adriaan S.
Pavlović, Vera P.

Pavlović, Vladimir B.

Dudić, Duško
Vlahović, Branislav

Đoković, Vladimir

Article (Published version)

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Show full item recordAbstract
Nanocomposites of polyvinylidene fluoride/polymethyl methacrylate (PVDF/PMMA) blend and mechanically activated barium titanate (BaTiO3) particles were prepared by melt mixing. Modification of filler by means of mechanical activation has a profound effect on the crystallization of PVDF in the blend matrix. Raman analysis showed that the modified BaTiO3 particles, due to higher specific surfaces, induce, predominantly, the crystallization of the electrically active β-phase of PVDF, while the initial micron size particles induce the formation of the most common but non-polar α-crystal form. The introduction of activated particles reduces the overall crystallinity but slightly affects the crystallization and melting temperatures of the matrix. Dielectric spectroscopy revealed that at fixed filler content the dielectric constant of the blend increases with decreasing of the particle size (increasing of the activation time). A similar trend was observed for the storage moduli in dynamic mech...anical analysis; the stiffness of the composite was higher when mechanically activated particles were used.
Keywords:
polyvinylidene fluoride and polymethyl methacrylate / PVDF and PMMA / mechanical activation / barium titanateSource:
Journal of Applied Physics, 2014, 115, 084109-Publisher:
- AIP Publishing
Funding / projects:
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-45020)
- Directed synthesis, structure and properties of multifunctional materials (RS-172057)
- Size-, shape- and structure- dependent properties of nanoparticles and nanocomposites (RS-172056)
- United States National Science Foundation (NSF) / Centers of Research Excellence in Science and Technology (CREST), Grant HRD-0833184
- United States National Aeronautics and Space Administration (NASA), Grant NNX09AV07A
- National Research Foundation in South Africa
DOI: 10.1063/1.4866694
ISSN: 0021-8979 (Print); 1089-7550 (Online)
WoS: 000332619600066
Scopus: 2-s2.0-84896795393
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Mofokeng, Tladi G. AU - Luyt, Adriaan S. AU - Pavlović, Vera P. AU - Pavlović, Vladimir B. AU - Dudić, Duško AU - Vlahović, Branislav AU - Đoković, Vladimir PY - 2014 UR - https://dais.sanu.ac.rs/123456789/660 AB - Nanocomposites of polyvinylidene fluoride/polymethyl methacrylate (PVDF/PMMA) blend and mechanically activated barium titanate (BaTiO3) particles were prepared by melt mixing. Modification of filler by means of mechanical activation has a profound effect on the crystallization of PVDF in the blend matrix. Raman analysis showed that the modified BaTiO3 particles, due to higher specific surfaces, induce, predominantly, the crystallization of the electrically active β-phase of PVDF, while the initial micron size particles induce the formation of the most common but non-polar α-crystal form. The introduction of activated particles reduces the overall crystallinity but slightly affects the crystallization and melting temperatures of the matrix. Dielectric spectroscopy revealed that at fixed filler content the dielectric constant of the blend increases with decreasing of the particle size (increasing of the activation time). A similar trend was observed for the storage moduli in dynamic mechanical analysis; the stiffness of the composite was higher when mechanically activated particles were used. PB - AIP Publishing T2 - Journal of Applied Physics T1 - Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of β-crystal polymorph rich matrix through mechanical activation of the filler SP - 084109 VL - 115 DO - 10.1063/1.4866694 UR - https://hdl.handle.net/21.15107/rcub_dais_660 ER -
@article{ author = "Mofokeng, Tladi G. and Luyt, Adriaan S. and Pavlović, Vera P. and Pavlović, Vladimir B. and Dudić, Duško and Vlahović, Branislav and Đoković, Vladimir", year = "2014", abstract = "Nanocomposites of polyvinylidene fluoride/polymethyl methacrylate (PVDF/PMMA) blend and mechanically activated barium titanate (BaTiO3) particles were prepared by melt mixing. Modification of filler by means of mechanical activation has a profound effect on the crystallization of PVDF in the blend matrix. Raman analysis showed that the modified BaTiO3 particles, due to higher specific surfaces, induce, predominantly, the crystallization of the electrically active β-phase of PVDF, while the initial micron size particles induce the formation of the most common but non-polar α-crystal form. The introduction of activated particles reduces the overall crystallinity but slightly affects the crystallization and melting temperatures of the matrix. Dielectric spectroscopy revealed that at fixed filler content the dielectric constant of the blend increases with decreasing of the particle size (increasing of the activation time). A similar trend was observed for the storage moduli in dynamic mechanical analysis; the stiffness of the composite was higher when mechanically activated particles were used.", publisher = "AIP Publishing", journal = "Journal of Applied Physics", title = "Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of β-crystal polymorph rich matrix through mechanical activation of the filler", pages = "084109", volume = "115", doi = "10.1063/1.4866694", url = "https://hdl.handle.net/21.15107/rcub_dais_660" }
Mofokeng, T. G., Luyt, A. S., Pavlović, V. P., Pavlović, V. B., Dudić, D., Vlahović, B.,& Đoković, V.. (2014). Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of β-crystal polymorph rich matrix through mechanical activation of the filler. in Journal of Applied Physics AIP Publishing., 115, 084109. https://doi.org/10.1063/1.4866694 https://hdl.handle.net/21.15107/rcub_dais_660
Mofokeng TG, Luyt AS, Pavlović VP, Pavlović VB, Dudić D, Vlahović B, Đoković V. Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of β-crystal polymorph rich matrix through mechanical activation of the filler. in Journal of Applied Physics. 2014;115:084109. doi:10.1063/1.4866694 https://hdl.handle.net/21.15107/rcub_dais_660 .
Mofokeng, Tladi G., Luyt, Adriaan S., Pavlović, Vera P., Pavlović, Vladimir B., Dudić, Duško, Vlahović, Branislav, Đoković, Vladimir, "Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of β-crystal polymorph rich matrix through mechanical activation of the filler" in Journal of Applied Physics, 115 (2014):084109, https://doi.org/10.1063/1.4866694 ., https://hdl.handle.net/21.15107/rcub_dais_660 .