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(a) SEM of EFB powder. Tensile fractured surface of (b) untreated RC biocomposite film containing 2 wt% EFB, (c) untreated RC biocomposite film containing 4 wt% EFB, (d) treated RC biocomposite film containing 2 wt% EFB and (e) treated RC biocomposite film containing 4 wt% EFB as observed through SEM.
