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Percolation Model for Renewable-Carbon Doped Functional Composites in Packaging Application: A Brief Review

Center for Biocomposites and Biomaterials Processing, Department of Mechanical and Industrial Engineering, University of Toronto, 33 Willcocks St., Toronto, ON M5S 3B3, Canada
Key Laboratory of Food Nutrition and Safety (Tianjin University of Science and Technology), Ministry of Education, Tianjin 300457, China
Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
Key Laboratory of Pulp & Paper Science and Technology of Shandong Province, Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
Author to whom correspondence should be addressed.
Coatings 2020, 10(2), 193;
Received: 23 January 2020 / Revised: 18 February 2020 / Accepted: 21 February 2020 / Published: 24 February 2020
(This article belongs to the Special Issue Bio-Based Active Packaging for Shelf Life Extension)
This review summarizes the application of percolation theory for the behavior simulation of renewable-carbon in its doped packaging composites. Such dopant-reinforced materials have sparked considerable interest due to the significant improvement on the aesthetic and mechanical properties at considerable low filler content (<1% in some cases), which would further boost their potential use in the food and pharmaceutical packaging industries. We focused mainly on the percolation behavior, which is closely related to the distribution of renewable carbon particles in the presence of polymeric matrix. The effect of geometry, alignment and surface property is of particular relevance to the percolation threshold of composites containing carbon fillers. Validity, as well as limitations of the mostly used percolation models, is further discussed. Finally, despite its recent emergence as functional filler, carbon-based nanocellulose has been extensively developed for a wide range of applications. This inspired the concept to use nanocellulose as a secondary bio-additive for packaging purposes, such as functional nanocellulose-coated film where primarily synthetic polymers are used. The microstructure and functionality of rod-like nanocellulose in its use for film composite are specifically discussed. View Full-Text
Keywords: packaging; renewable carbon; percolation; functional film; nanocellulose packaging; renewable carbon; percolation; functional film; nanocellulose
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Sun, B.; Kong, F.; Zhang, M.; Wang, W.; KC, B.S.; Tjong, J.; Sain, M. Percolation Model for Renewable-Carbon Doped Functional Composites in Packaging Application: A Brief Review. Coatings 2020, 10, 193.

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