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Synthesis of Graphene Nanofluids with Controllable Flake Size Distributions
Published on: July 17, 2019
Highly concentrated graphene solutions via polymer enhanced solvent exfoliation and iterative solvent exchange
1Northwestern University, Department of Materials Science and Engineering and Department of Chemistry, 2220 Campus Drive, Evanston, Illinois 60208-3108, United States.
Abstract:
Efficient graphene exfoliation in a nontraditional solvent, ethanol, is achieved through the addition of a stabilizing polymer, ethyl cellulose. Iterative solvent exchange is further demonstrated as a rapid, room-temperature, ultracentrifugation-free approach to concentrate the graphene solution to a level exceeding 1 mg/mL. The outstanding processability and electrical properties of these graphene inks are verified through the realization of aligned graphene-polymer nanocomposites and transparent conductive graphene thin films.
