Abstract
ABSTRACTThe role of negative charges on cellulose nanowhiskers (CNWs) in the aqueous dispersion behaviors of graphene has been investigated. The sulfate groups were partially removed from the CNWs with sodium hydroxide solution. Both CNWs and desulfated cellulose nanowhiskers (D-CNWs) were applied in the aqueous dispersion process of graphene. The dispersing result was evaluated by ultraviolet-visible (UV-Vis) absorption spectra. It revealed the dispersing ability of D-CNWs became worse due to the removal of sulfate groups. It demonstrated the negative charged sulfate groups on CNWs played an important role in the graphene dispersing process.
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