In order to develop functional natural fiber reinforcements derived from cellulose nanofibers(CNF),surface modification of CNF by oxidative polymerization of dopamine was carried out.Resulting polydopamine(PDA)-coated CNF was blended with polypropylene(PP)to prepare the surface-modified CNF/PP nanocomposites.Obtained PDA-coated CNF and its nanocomposites were analyzed as to their morphologies,structures,and various properties.From analyses by Fourier transform infrared spectroscopy,scanning electron microscopy equipped with energy dispersive spectroscopy,X-ray photoelectron spectroscopy,and thermogravimetry,it was clarified that the treated CNF surface was homogeneously coated by PDA without re-aggregation of CNF.Moreover,it was confirmed that the PDA-coated CNF/PP nanocomposites had excellent mechanical performances and good antistatic properties.
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