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Improving the dielectric constants and breakdown strength of polymer composites: effects of the shape of the BaTiO3 nanoinclusions, surface modification and polymer matrix
Abstract
Flexible polymer composite films are prepared by a solution cast method with polar polyvinylidene fluoride (PVDF) or non-polar epoxy as the polymer matrix. BaTiO3 nanoparticles and BaTiO3 nanofibers with large aspect ratio are used as dielectric fillers after surface modification by polydopamine. The effects of filler shape, surface modification and polarity of polymer matrix on the microstructure, dielectric constants and breakdown strength of polymer composites are investigated in detail. Surface modification by polydopamine improves the compatibility between BaTiO3 and polymer as well as passivating the surfaces of BaTiO3. At the same volume fraction, composites filled with BaTiO3 nanofibers exhibit greater dielectric constants than the composites filled with BaTiO3 nanoparticles. The polydopamine layers on BaTiO3 nanofibers give rise to stronger interfaces between the fillers and polymer matrices. Improved breakdown strengths are achieved in both composites. This work may provide a general strategy for flexible polymer nanocomposites with greatly enhanced dielectric constants and breakdown strength.
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Cites
Mussel-inspired surface chemistry for multifunctional coatings
Lee, H., Dellatore, S. M., Miller, W. M., & Messersmith, P. B. (2007) · Science · doi:10.1126/science.1147241 · Cited by 10,965
Cited by
Flexible Nanodielectric Materials with High Permittivity for Power Energy Storage
Dang, Z., Yuan, J., Yao, S., & Liao, R. (2013) · Advanced Materials · doi:10.1002/adma.201301752 · Cited by 1,454
Zhang, X., Shen, Y., Xu, B., Zhang, Q., Gu, L., Jiang, J., Ma, J., Lin, Y., & Nan, C. (2016) · Advanced Materials · doi:10.1002/adma.201503881 · Cited by 601
Self-citationYang, Y., Pan, H., Xie, G., Jiang, Y., Chen, C., Su, Y., Wang, Y., & Tai, H. (2020) · Sensors and Actuators A: Physical · doi:10.1016/j.sna.2019.111789 · Cited by 496
Guan, X., Xu, B., & Gong, J. (2020) · Nano Energy · doi:10.1016/j.nanoen.2020.104516 · Cited by 359
Zhang, X., Jiang, J., Shen, Z., Dan, Z., Li, M., Lin, Y., Nan, C., Chen, L., & Shen, Y. (2018) · Advanced Materials · doi:10.1002/adma.201707269 · Cited by 322
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Metadata
- Authors
- Song, Y., Shen, Y., Liu, H., Lin, Y., Li, M., & Nan, C.-W.
- Venue
- Journal of Materials Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2012
- Volume
- 22
- Issue
- 32
- Pages
- 16491
- ISSN
- 0959-9428 (ISSN-L)
- 1364-5501
- OpenAlex
- W2142565553
- Cited by
- 381
- References
- 1
- FWCI
- 12.91
- Type
- journal article
- Language
- en
- Open access
- closed
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- Song, Y., Shen, Y., Liu, H., Lin, Y., Li, M., & Nan, C.-W. (2012). Improving the dielectric constants and breakdown strength of polymer composites: effects of the shape of the BaTiO3 nanoinclusions, surface modification and polymer matrix. Journal of Materials Chemistry. https://doi.org/10.1039/c2jm32579a
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