Title : The Layer by Layer Assembly Thin Film of Cationic Cellulose and Cellulose Nanocrystals and Their Antireflection, anti-fogging and anti-frosting properties
In this research, multifunctional nanoporous thin films are prepared from cellulose derivatives, cellulose nanocrystals (CNC) as a nanofiller reinforcement and cationic cellulose (CC) as matrices, via layer by layer assembly. The effect of dipping time, number of bilayers, solution pH, ionic strength, the temperature on the thickness of the as-prepared thin films are studied. The results show a continuous increase on the film thickness with increasing dipping time and a number of bilayers, while more complicated changes are observed with the change of solution pH, ionic strength, and temperature. The transmittance and anti-reflective properties of the as-prepared thin films are investigated by using UV-Vis. The surface morphology and the wettability properties are also studied by atomic force microscopy (AFM) and optical contact angle meter, respectively. Further, the resultant films are demonstrated to exhibit anti-fogging and anti-frosting behaviors due to their porous structure and hydrophilic surface.