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Influence of Spray Drying Parameters on the Formation of β ‐Phase Poly(vinylidene fluoride)
Author(s) -
Wiegmann Jens,
Beuermann Sabine,
Weber Alfred P.
Publication year - 2021
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202000194
Subject(s) - materials science , piezoelectricity , fluoride , electrospray , chemical engineering , phase (matter) , spray drying , electric field , volumetric flow rate , composite material , analytical chemistry (journal) , corona discharge , polyvinylidene fluoride , chromatography , chemistry , polymer , organic chemistry , mass spectrometry , inorganic chemistry , thermodynamics , electrode , physics , quantum mechanics , engineering
A simple one‐step spraying method to produce poly(vinylidene fluoride) (PVDF) in the desired conformation is presented. The content of the piezoelectric β ‐phase is measured at different spray drying conditions and during electrospray. The influence of a strong electrical field and charges on the droplet are investigated separately from the electrospray setup with a pneumatic atomizer. For this purpose, the electric field is integrated into a pneumatic atomization process by a plate capacitor and the charge of the droplets by corona discharge. To investigate the drying properties, the drying temperature and the flow rate of dry air are examined. The presented process offers the possibility to deposit PVDF films or to produce PVDF powders, in their piezoelectric β ‐ and γ ‐phases or in the nonpolar α ‐phase.