"BNNSs-OH/CAB COMPOSITE COATINGS AS A NOVEL FILM FOR HIGHLY EFFICIENT WATER VAPOR BARRIER PROPERTY "

Cellulose-based composite packaging films are regarded as environmentally friendly materials due to their complete degradability, as compared with plastic materials. Herein, a high-barrier composite coated paper was fabricated by coating cellulose acetate butyrate (CAB) with different concentrations of edge hydroxylated boron nitride (BNNSs-OH), and then the effects of water vapor barrier, along with composition ratio and film-forming thickness in gradient setting were evaluated. The composite membrane is more likely to create higher barrier performance as the concentration of BNNSs-OH increases. In view of mechanical properties and barrier properties, the best barrier effect is achieved when the hydroxylated boron nitride solution content is 12.5 wt% and the composite thickness is 100 μm, and the water vapor transmission rate is as low as 120.8 g/m2•day. Paper coated with BNNSs-OH/CAB may be used for packaging, showing promising potential not only for the food sector, but also for other application areas.