Abstract
RESS enables the transformation from α to β phase PVDF. Piezoresponse force microscopy confirmed the piezoelectricity of the obtained particles.
Highlights
The excellent resistance to chemical, thermal, ultraviolet, weathering and radiation environments has led to the wideranging applications of semicrystalline hydro uorocarbon poly(vinylidene uoride) (PVDF).[1]
The particle size was shown to decrease either by increasing molar mass, in case of identical polymer end groups, or by increasing the degree of crystallinity, in case of similar molar mass and different end groups.[40]. In this contribution we describe the impact of rapid expansion of supercritical solutions (RESS) on poly(vinylidene fluoride) (PVDF) properties for a model polymer with a number average molar mass of Mn 1⁄4 2000 g molÀ1
The rapid expansion of the scCO2–PVDF mixture led to the formation of submicron polymer particles with a median particle size of 47 nm
Summary
The excellent resistance to chemical, thermal, ultraviolet, weathering and radiation environments has led to the wideranging applications of semicrystalline hydro uorocarbon poly(vinylidene uoride) (PVDF).[1]. PVDF applications exploiting piezoelectric properties in special devices like sensors, capacitors or actuators are highly interesting. The potential for future applications is remarkable.[18] So far, the electrical properties of PVDF have mainly been investigated in polymer lms.[19,20,21,22,23,24]
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