Study of nanocrystals within lamellar structures of polyvinylidene fluoride using phase plate scanning transmission electron microscopy

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ID: 317390
2026
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Ranked #15 of 27 articles by views in Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

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Abstract
Polyvinylidene fluoride (PVDF) is a polymer with excellent piezoelectric properties. The close relationship between structure and properties necessitates structural investigation. The PVDF structure has been investigated using techniques such as X-ray diffraction, Fourier transform infrared spectroscopy, and polarized light microscopy. However, these methods only provide average structure information about the sample as a whole. To obtain local structure information, transmission electron microscopy should be used. Herein, the nanocrystals constituting the lamellar structure of heat-elongated PVDF were investigated using phase plate scanning transmission electron microscopy. Notably, the length of the nanocrystals increased with the increase in the elongation ratio, with no substantial change in its periodicity, and the nanocrystals exhibited a tendency to align with the lamellar structure orientation. This suggests that (1) the molecular chains within the nanocrystals elongate and tilt owing to the shear stress applied on them during elongation and (2) the entire lamellar structure rotates. To our knowledge, this is the first detailed study of nanocrystals in PVDF, which may further develop functional polymers.
Reference Key
openalex_W7164759135 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mayu Togashi, Yuki Tanaka, Toshiki Shimizu, Hiromu Saito, 蓑田弘喜
Journal Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada
Year 2026
DOI
10.1093/jmicro/dfag028
URL
https://doi.org/10.1093/jmicro/dfag028
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