Graphene oxide-doped polyvinylidene fluoride particles with enhanced beta-phase crystallinity

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United States of America Patent

PATENT NO 11932735
APP PUB NO 20220396674A1
SERIAL NO

17346737

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Abstract

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High spherical particles for use in piezoelectric applications may be produced mixing a mixture comprising a graphene oxide-polyvinylidene fluoride (GO-PVDF) composite, a carrier fluid that is immiscible with the PVDF, and optionally an emulsion stabilizer at a temperature equal to or greater than a melting point or softening temperature of the PVDF to disperse the GO-PVDF composite in the carrier fluid, wherein the GO-PVDF composite has a transmission FTIR minimum transmittance ratio of β-phase PVDF to α-phase PVDF of about 1 or less; cooling the mixture to below the melting point or softening temperature of the PVDF to form GO-PVDF particles; and separating the GO-PVDF particles from the carrier fluid, wherein the GO-PVDF particles comprise the graphene oxide dispersed in the PVDF, and wherein the GO-PVDF particles have a transmission FTIR minimum transmittance ratio of β-phase PVDF to α-phase PVDF of about 1 or less.

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Patent Owner(s)

Patent OwnerAddress
XEROX CORPORATION201 MERRITT 7 P O BOX 4505 NORWALK CT 06851

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Claridge, Robert Kitchener, CA 25 22
Farrugia, Valerie M Oakville, CA 210 1243
Jamali, Hojjat Seyed Mississauga, CA 11 4

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