title: Robust Guar Gum/Cellulose Nanofibrils Multilayer Films with Good Barrier Properties.
abstract: The pursuit of sustainable functional materials requires development of materials based on renewable resources and efficient fabrication methods. Hereby, we fabricated all-polysaccharides multilayer films using cationic guar gum (CGG) and anionic cellulose nanofibrils (i.e., TEMPO-oxidized cellulose nanofibrils, TOCNs) through a layer-by-layer casting method. This technique is based on alternate depositions of oppositely charged water-based CGG and TOCNs onto laminated films. The resultant polyelectrolyte multilayer films were transparent, ductile, and strong. More importantly, the self-standing films exhibited excellent gas (water vapor and oxygen) and oil barrier performances. Another outstanding feature of these resultant films was their resistance to various organic solvents including methanol, acetone, N,N-dimethylacetamide (DMAc) and tetrahydrofuran (THF). The proposed film fabrication process is environmentally benign, cost-effective, and easy to scale-up. The developed CGG/TOCNs multilayer films can be used as a renewable material for industrial applications such as packaging.
authors.affiliation: Department of Chemical Engineering, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada.
authors.forename: Lei
authors.identifier: http://orcid.org/0000-0002-9011-2246
authors.initials: L
authors.lastname: Dai
authors.affiliation: Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University , Wuxi 214122, China.
authors.forename: Zhu
authors.initials: Z
authors.lastname: Long
authors.affiliation: Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University , Wuxi 214122, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Chen
authors.affiliation: Department of Chemical Engineering, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada.|Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology , Tianjin 300457, China.
authors.forename: Xingye
authors.initials: X
authors.lastname: An
authors.affiliation: Department of Chemical Engineering, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada.|Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology , Tianjin 300457, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Cheng
authors.affiliation: Department of Chemical Engineering, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada.
authors.forename: Avik
authors.initials: A
authors.lastname: Khan
authors.affiliation: Department of Chemical Engineering, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada.
authors.forename: Yonghao
authors.initials: Y
authors.lastname: Ni
keywords: cationic guar gum; cellulose nanofibrils; gas barrier; multilayer; oil barrier