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- Title
Polyvinylidene fluoride‐poly(vinyl acetate)‐natural graphite blend nanocomposites: Investigations of electroactive phase formation, electrical, thermal, and wetting properties.
- Authors
Haridas Menon, Niranjan; Sabu, Aleena; B. T. S., Ramanujam
- Abstract
Solution blended polyvinylidene fluoride (PVDF)‐20 wt% poly(vinyl acetate) (PVAc)‐natural graphite (NtGr) blend nanocomposites exhibit a very low electrical percolation threshold of less than 0.5 wt% NtGr due to the formation of graphite nanosheets. The electroactive gamma phase induced with and without NtGr in PVDF‐20 wt% PVAc blend film is confirmed by X‐ray diffraction, fourier transform infrared spectroscopy, and differential scanning calorimetry analyzes. The onset degradation temperature corresponding to PVDF in PVDF‐20 wt% PVAc blend nanocomposites is increased by 27°C when 1 wt% NtGr is incorporated into the blend, suggesting enhanced thermal stability of blend nanocomposites. Due to an increase in surface roughness of PVDF‐20 wt% PVAc‐3 wt% NtGr as evidence by field emission scanning electron microscopy analysis, the water contact angle increases to 141.6° from 83.44° for PVDF‐20 wt% PVAc blend. AC conductivity analysis suggests hopping conduction in PVDF‐20 wt% PVAc‐x wt% NtGr (x = 1, 3, 5) blend nanocomposites. The interjunction capacitance increases with graphite loading in the blend.
- Subjects
VINYL acetate; FOURIER transform infrared spectroscopy; NANOCOMPOSITE materials; FIELD emission electron microscopy; CONDUCTING polymer composites; GRAPHITE; HOPPING conduction; DIFFERENTIAL scanning calorimetry
- Publication
Polymers for Advanced Technologies, 2022, Vol 33, Issue 12, p4023
- ISSN
1042-7147
- Publication type
Article
- DOI
10.1002/pat.5833