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Synthesis and characterization of poly(vinylidene‐trifluoroethylene)/NiTiO 2
Author(s) -
Kuang Xiwen,
Lin Shuang,
Zhu Hong
Publication year - 2013
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201228585
Subject(s) - materials science , crystallinity , differential scanning calorimetry , microstructure , permittivity , dielectric , sol gel , scanning electron microscope , composite number , transmission electron microscopy , chemical engineering , nanoparticle , composite material , nanotechnology , physics , optoelectronics , engineering , thermodynamics
NiTiO 2 nanoparticles were prepared by the sol–gel method, and a composite film of poly(vinylidene‐trifluoroethylene) (PVDF‐TrFE)/NiTiO 2 was prepared by the solution cast method. The microstructure of NiTiO 2 was investigated by transmission electron microscopy (TEM). The film was characterized by TEM, X‐ray diffraction (XRD), differential scanning calorimetry (DSC), and dielectric property testing. The results showed that the NiTiO 2 nanoparticles were well dispersed in the polymer matrix. With the increase of NiTiO 2 content, the crystallinity of PVDF‐TrFE/NiTiO 2 decreased. The permittivity of the films improved significantly with the increase of NiTiO 2 content. The permittivity at 1000 Hz and room temperature increased to 18.56 for PVDF‐TrFE/Ni 0.1 TiO 2 (60 wt%) from the value of 11.17 for the pure PVDF‐TrFE film. Furthermore, the permittivity of the composite film increased with the increase of temperature.