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Open AccessArticle

Paper-Based Oil Barrier Packaging using Lignin-Containing Cellulose Nanofibrils

1
School of Forest Resources, University of Maine, 5755 Nutting Hall, Orono, ME 04469, USA
2
Department of Chemical and Biomedical Engineering, University of Maine, Orono, ME 04469, USA
3
Advanced Structures and Composites Center, University of Maine, 35 Flagstaff Road, Orono, ME 04469, USA
*
Author to whom correspondence should be addressed.
Molecules 2020, 25(6), 1344; https://doi.org/10.3390/molecules25061344
Received: 26 January 2020 / Revised: 5 March 2020 / Accepted: 6 March 2020 / Published: 16 March 2020
(This article belongs to the Special Issue Renewable Nanomaterials)
Environmental and health concerns are driving the need for new materials in food packaging to replace poly- or perfluorinated compounds, aluminum layers, and petroleum-based polymers. Cellulose nanofibrils (CNF) have been shown by a number of groups to form excellent barrier layers to oxygen and grease. However, the influence of lignin-containing cellulose nanofibrils (LCNF) on film barrier properties has not been well reported. Herein, thin films (16 g/m2) from LCNF and CNF were formed on paper substrates through a filtration technique that should mimic the addition of material at the wet end of a paper machine. Surface, barrier and mechanical attributes of these samples were characterized. The analysis on the surface free energy and water contact angle pointed to the positive role of lignin distribution in inducing a certain degree of water repellency. The observed oxygen transmission rate (OTR) and water vapor permeability (WVP) values of LCNF-coated samples were nearly similar to those with CNF. However, the presence of lignin improved the oil proof performance; these layered designs exhibited an excellent resistance to grease (kit No. 12). The attained papers with LCNF coat were formed into bowl-like containers using metal molds and a facile oven drying protocol to evaluate their resistance to oil penetration over a longer period. The results confirmed the capability of LCNF layer in holding commercially available cooking oils with no evidence of leakage for over five months. Also, an improvement in the tensile strength and elongation at break was observed in the studied papers. Overall, the proposed packaging material possesses viable architecture and can be considered as a fully wood-based alternative for the current fluorocarbon systems. View Full-Text
Keywords: lignin-containing cellulose nanofibrils; food packaging; grease barrier properties; oxygen barrier; bio-based oil proof paper lignin-containing cellulose nanofibrils; food packaging; grease barrier properties; oxygen barrier; bio-based oil proof paper
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MDPI and ACS Style

H. Tayeb, A.; Tajvidi, M.; Bousfield, D. Paper-Based Oil Barrier Packaging using Lignin-Containing Cellulose Nanofibrils. Molecules 2020, 25, 1344. https://doi.org/10.3390/molecules25061344

AMA Style

H. Tayeb A, Tajvidi M, Bousfield D. Paper-Based Oil Barrier Packaging using Lignin-Containing Cellulose Nanofibrils. Molecules. 2020; 25(6):1344. https://doi.org/10.3390/molecules25061344

Chicago/Turabian Style

H. Tayeb, Ali; Tajvidi, Mehdi; Bousfield, Douglas. 2020. "Paper-Based Oil Barrier Packaging using Lignin-Containing Cellulose Nanofibrils" Molecules 25, no. 6: 1344. https://doi.org/10.3390/molecules25061344

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Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

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