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(a) Absorption spectra of pure PVA, hemp particle/PVA, and L-CNCs/PVA films (5 wt. %), (b) digital images of pure PVA and L-CNCs/PVA films (5 wt. %), (c) transmission spectra of L-CNCs7(10)/PVA at 5 wt. %, 10 wt. %, and 20 wt. % ratio and (d) Schematic diagram of L-CNCs’ distribution in PVA film.
