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Updated: Jan 11, 2026
Synthesis of Graphene Nanofluids with Controllable Flake Size Distributions
Published on: July 17, 2019
Highly stable water-based dispersion of multilayer graphene modified with sodium dodecyl benzene sulfonate and
Minghua Li1,2,3, Peng Wu1,2, Honglin Chen1,2
1School of Energy Materials and Chemical Engineering, Hefei University Hefei Anhui 230601 China liminghua@hfuu.edu.cn.
Abstract:
In this study, a facile and low-cost π-π non-covalent surface modification of commercial multilayer graphene (m-GR) was achieved by ball milling with an anionic surfactant (sodium dodecyl benzene sulfonate, SDBS) and a polyacrylate terpolymer binder (LA132) frequently used in lithium-ion batteries. Results from transmittance spectroscopy, zeta potential analysis, sedimentation photo, scanning electron microscopy (SEM), and atomic force microscopy (AFM) demonstrate that the modified m-GR exhibits good dispersion stability in water. Thermogravimetric analysis (TGA) confirms the successful adsorption of both modifiers onto the commercial m-GR surface. Importantly, while commercial m-GR is insoluble in water, the m-GRSL dispersion modified with 1.8 wt% SDBS and 20.0 wt% LA132 under the condition of a total 4 h ball milling time shows good aqueous dispersibility and long-term storage stability, maintaining no sedimentation for over one month. From an industrial perspective, this method is green and low-cost to achieve large-scale production.
