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首页> 外文期刊>Polymers for advanced technologies >Polyvinylidene fluoride-poly(vinyl acetate)-natural graphite blend nanocomposites: Investigations of electroactive phase formation, electrical, thermal, and wetting properties
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Polyvinylidene fluoride-poly(vinyl acetate)-natural graphite blend nanocomposites: Investigations of electroactive phase formation, electrical, thermal, and wetting properties

机译：Polyvinylidene fluoride-poly(vinyl acetate)-natural graphite blend nanocomposites: Investigations of electroactive phase formation, electrical, thermal, and wetting properties

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摘要

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℃ 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.

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