keywords BARRIER BIO-NANOCOMPOSITES COMPOSITES HUMIDITY SENSORS MECHANICAL-PROPERTIES Materials Science Materials Science, Multidisciplinary NANOCELLULOSE NANOPARTICLES Nanoscience & Nanotechnology POLY(VINYL ALCOHOL) SIEBIMM Science & Technology Science & Technology - Other Topics Technology WHISKERS YOUNGS MODULUS cellulose nanocrystals coatings mechanical properties polyvinyl alcohol