6. Optical properties
The optical properties of 100% nanocellulose films, or nanocomposites, have been studied mainly for MFC. These properties may be important for packaging applications. Visible light transmittance is usually determined using a UV-visible spectrometer. Measurements are typically taken in the 200-1,000 nm wavelength range.
6.1 100% cellulose films
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Films obtained from aqueous suspensions of MFC can be optically transparent if the cellulose nanoparticles are arranged compactly and the interstices between them are small enough to avoid light scattering
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