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Fourier-transform infrared spectra of polymers used in film formation, drug-loaded nanoparticles, and nanoparticle-incorporated film with various compositions (S1, S2, S3, and S4).
Abbreviations: HA, hyaluronic acid; SA, sodium alginate; PVA, polyvinyl alcohol; XL, xylitol; PEG, polyethylene glycol; NPs, nanoparticles.
