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FTIR spectra of starch, montmorillonite, hectorite, kaolinite, starch–glycerin film, starch–glycerin–montmorillonite 2 wt % nanocomposite film, starch–glycerin–hectorite 2 wt % nanocomposite film, and starch–glycerin–kaolinite 2 wt % nanocomposite film.
