Effect of the dispersion state of minerals on the properties of cellulose nanofiber-based composite films

The dispersion state and the efficiency of mixture different components in a composite film have an important impact on its mechanical optical properties. In present work, impacts treatments disaggregation fibrous clay particles water, properties related cellulose nanofiber (CNF)-based films, were evaluated. X-ray diffraction studies, performed samples sepiolite palygorskite, revealed only minor changes pattern when minerals subjected to ultrasonic treatment, with or without addition chemical dispersing agents. Conversely, microscopic studies differences samples, induced by dispersants, showing improvement mineral crystals. films prepared (and carboxymethylcellulose, as dispersant) dispersed using types CNF, showed improved compared composites same counterparts high-speed shear disperser.