Heteroaggregation of cellulose nanocrystals with Fe2O3 nanoparticles

Authors: Mikhaylov V.I., Torlopov M.A., Krivoshapkina E.F., Martakov I.S., Krivoshapkin P.V.


Hybrid dispersion systems based on cellulose nanocrystals (CNC) and ferric oxide nanoparticles have been prepared, and heteroaggregation process for a wide range of the concentration ratio of the components have been studied. It is established that one can obtain stable colloidal dispersions with both negatively and positively charged particles or hybrid systems with a neutralized surface charge by controlling the CNC/Fe2O3 concentration ratio. It is shown that the heteroaggregation of cellulose nanocrystals-Fe2O3 hybrid dispersions occurs by the “charge neutralization–charge reversal” mechanism. The hybrid systems are stable outside the range of the ζ-potential values between −30 and +30 mV.

DOI: doi.org/10.1007/s10971-017-4374-3

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