Our new article in Cellulose has now been published. Here we show that spray coating can be used to produce a strong, dense and robust nanocellulose (NC) films. Basis weight of NC films can be easily tailored with combinations of conveyor velocity and suspension concentration. The strength of the spray coated NC film is up to 45% lower than the strength of NC film via vacuum filtration and the optical uniformity of the spray coated film could be controlled by adjusting the process setup. Under optimum conditions, both measured optical uniformity and strength were comparable to films prepared by vacuum filtration. The results confirm spraying to be a suitable alternative for fabricating NC films, allowing for high throughput mass production and the tailoring for properties for desired applications.
Authors: Kirubanandan Shanmugam, Hamid Doosthosseini, Swambabu Varanasi, Gil Garnier, Warren Batchelor
The article may be downloaded here