In-situ chemical oxidative polymerization of aniline mixed in cellulose nanofiber (CNF) suspension (that was isolated from jute fibers) was done to synthesize polyaniline (PANI)/CNF composite films, using aniline monomer as the starting material. During this synthesis, K₂Cr₂O₇ acted as an oxidant, while HCl worked as solvent for K₂Cr₂O₇ as well as for nanocellulose-aniline mixture. Different aniline concentrations were taken. The composite was characterized for its crystalline properties using X-ray diffraction (XRD), supported by Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy, which revealed the presence of bonding among C, O, H, N, etc., constituent elements. The result shows the decrement in crystalline properties as the concentration of aniline decreases. The composites will be used for electrical and mechanical measurements in future.

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