研究目的
To investigate the enhancement of electroactive phase in PVDF/BaTiO3 nanocomposites through plasma treatment of BaTiO3 nanoparticles and its effects on dielectric properties.
研究成果
Plasma treatment of BaTiO3 nanoparticles enhances the electroactive γ-phase in PVDF nanocomposites, improves dispersion, and results in higher dielectric constant and lower dielectric loss. The study demonstrates the potential of plasma treatment in modifying filler surfaces for enhanced polymer nanocomposite properties.
研究不足
The study focuses on the effects of plasma treatment on BaTiO3 nanoparticles and their incorporation into PVDF. The scalability of the plasma treatment process and the long-term stability of the nanocomposites under operational conditions were not explored.
1：Experimental Design and Method Selection
The study utilized non-thermal plasma treatment to functionalize BaTiO3 nanoparticles, followed by their incorporation into PVDF matrix to form nanocomposites. The interaction between functional groups on BaTiO3 and PVDF was analyzed.
2：Sample Selection and Data Sources
BaTiO3 nanoparticles with 400 nm diameter were used. PVDF powder and N,N-dimethylformamide (DMF) were selected for matrix preparation.
3：List of Experimental Equipment and Materials
Nanosecond-pulse generator (MPC-30),X-ray photoelectron spectroscopy (XPS) (ESCALAB250, Thermo VG, USA),Scanning electron microscope (SEM, SU 3500, Hitachi Instrument Co., Ltd, Japan),Fourier transform infrared spectrometer (FTIR) (Bruker, model IFS 48),Philips PW1820-X-ray diffractometer,Polarizing microscope (POM, BM-57XCC, Shuangxu Electron Co., Ltd, China),Drop shape analyzer (Krüss TC40-Mk1, Germany),Frequency response analyzer (Agilent 4294A)
4：Experimental Procedures and Operational Workflow
BaTiO3 nanoparticles were plasma-treated and then mixed with PVDF in DMF. The mixture was cast onto glass plates, dried, and characterized for structural, morphological, and dielectric properties.
5：Data Analysis Methods
XPS, SEM, FTIR, XRD, POM, contact angle measurements, and dielectric property measurements were used to analyze the nanocomposites.
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X-ray photoelectron spectroscopy
ESCALAB250
Thermo VG
Used for surface elemental analysis of BaTiO3 nanoparticles.
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Fourier transform infrared spectrometer
IFS 48
Bruker
Used for identifying the crystal phase of the composites.
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Frequency response analyzer
4294A
Agilent
Used for measuring the dielectric properties of the nanocomposites.
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Nanosecond-pulse generator
MPC-30
Institute of Electrical Engineering, Chinese Academy of Sciences
Used for plasma treatment of BaTiO3 nanoparticles.
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Scanning electron microscope
SU 3500
Hitachi Instrument Co., Ltd
Used for observing the micro-morphology of the samples.
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X-ray diffractometer
PW1820
Philips
Used for characterizing the crystal structure of the composites.
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Polarizing microscope
BM-57XCC
Shuangxu Electron Co., Ltd
Used for recording crystal phase morphological images of the nanocomposite.
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Drop shape analyzer
TC40-Mk1
Krüss
Used for static water contact angle measurement.
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