A Study on the Preparation, Characterization, and Application of Spray-Coated Cellulose Nanofiber Films
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Cellulose nanofibers
Free-standing films
Air permeance
Thickness mapping
Water vapor permeability



Submitted : 2023-12-05
Accepted : 2023-12-20
Published : 2024-01-04


Spraying cellulose nanofibers (CNF) on a polished stainless-steel plate is a novel approach to the fabrication of free-standing cellulose nanofiber film. Recently, free-standing cellulose nanofiber film has been attracting attention as an alternative to synthetic plastic film. Free-standing/self-standing CNF film can be used as a potential barrier, packaging application, membranes for wastewater application, fabrication of biomedical film for wound repair, and other applications in the fabrication of functional materials. To speed up the production of free-standing CNF film, the spraying process is a considerably intensified method for large-scale production of the film in a rapid manner. Spraying CNF on the stainlesssteel plate produces unique surfaces, namely a rough surface exposed to air and a smooth surface on the steel surface. The smooth surface of the film was shiny and provided a platform for utilizing this smoothness for fabricating functional materials such as substrates for flexible electronics and solar cells, etc. This paper summarizes the production of freestanding CNF film via spraying, along with its characterization and application.


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