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Open AccessArticle

Lignin Redistribution for Enhancing Barrier Properties of Cellulose-Based Materials

1
School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224001, China
2
Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China
3
Jiangsu R & D Center of the Ecological Dyes and Chemicals, Yancheng Polytechnic College, Yancheng 224005, China
4
Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B5A3, Canada
*
Authors to whom correspondence should be addressed.
Polymers 2019, 11(12), 1929; https://doi.org/10.3390/polym11121929 (registering DOI)
Received: 5 November 2019 / Revised: 14 November 2019 / Accepted: 20 November 2019 / Published: 22 November 2019
(This article belongs to the Special Issue Antimicrobial Polymers II)
Renewable cellulose-based materials have gained increasing interest in food packaging because of its favorable biodegradability and biocompatibility, whereas the barrier properties of hydrophilic and porous fibers are inadequate for most applications. Exploration of lignin redistribution for enhancing barrier properties of paper packaging material was carried out in this work. The redistribution of nanolized alkali lignin on paper surface showed excellent water, grease, and water vapor barrier. It provided persisted water (contact angle decrease rate at 0.05°/s) and grease (stained area undetectable at 72 h) resistance under long-term moisture or oil direct contact conditions, which also inhibited the bacterial growth to certain degree. Tough water vapor transmission rate can be lowered 82% from 528 to 97 g/m2/d by lignin redistribution. The result suggests that alkali lignin, with multiple barrier properties, has great potential in bio-based application considering the biodegradability, biocompatibility, and recyclability. View Full-Text
Keywords: lignin; redistribution; cellulose; multiple barrier; biodegradability lignin; redistribution; cellulose; multiple barrier; biodegradability
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MDPI and ACS Style

Wang, W.; Guo, T.; Sun, K.; Jin, Y.; Gu, F.; Xiao, H. Lignin Redistribution for Enhancing Barrier Properties of Cellulose-Based Materials. Polymers 2019, 11, 1929.

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