期刊
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
卷 52, 期 8, 页码 1073-1081出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00222348.2012.754707
关键词
dielectric properties; interfacial adhesion; interfacial area; interparticle distance; particle size effect; percolative polymer composite
资金
- National Natural Science Foundation of China [51072151, 51173139]
The dependence of the dielectric properties of micro- (m-) and nano- (n-) silver (Ag)/poly(vinylidene fluoride) (PVDF) composites on the Ag particle size was determined. The magnitude of dielectric constant and conductivity for the PVDF/n-Ag composites was much higher than that of the PVDF/m-Ag composites at the same Ag volume loading. Our results suggest that the percolative behaviors were quite different for the m- and n-systems owing to the Ag particle size effect. The dielectric property depends on the synergistic effects of interfacial area, interparticle distance, and interfacial adhesion, all of which are highly dependent on the Ag particle size. The increased interfacial area, reduced interparticle distance, and improved interfacial adhesion contributed to the better dielectric properties of the PVDF/n-Ag composites.
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