1. Investigations on dielectric and mechanical properties of poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP)/single-walled carbon nanotube composites.
- Author
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Sharma, Saloni, Hasan, Mohsin, Rajulapati, Koteswararao V., Kumar, Rajesh, Ajayan, Pulickel M., and Yadav, Ram Manohar
- Subjects
DIELECTRIC properties ,CARBON composites ,FIELD emission electron microscopy ,PERMITTIVITY ,TENSILE strength ,CARBON nanotubes ,FERROELECTRIC polymers - Abstract
Due to their unique properties and potential uses in many fields, composite materials have attracted much attention and been extensively investigated. We have investigated the mechanical and dielectric properties of single-walled carbon nanotubes (SWCNTs)–reinforced poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) composite films. Composite films were prepared with SWCNTs concentrations ranging from 0.2 to 1.0% using a solution casting technique. Impedance spectroscopy was used to investigate the composite dielectric behavior, and tensile testing was performed to examine their mechanical properties. Field emission scanning electron microscopy, transmission electron microscopy, and atomic force microscopy were used for morphological analyses, and an X-ray diffractometer was used to determine the crystalline phase. The results showed that adding SWCNTs improved mechanical properties, including ultimate tensile strength (UTS) and elastic modulus (E). It also increased the dielectric constant. However, the dielectric loss also increased slightly. These enhancements can be attributed to the unique characteristics of the SWCNTs, such as their high aspect ratio and surface area. This research demonstrates the potential of PVDF-HFP/SWCNTs composites in various applications such as electronic devices, sensors, and capacitors. This study offers valuable insights for developing and designing composite films with improved properties for various applications. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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