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Published in: Cellulose 8/2020

09-03-2020 | Original Research

Barrier coatings with various types of cellulose nanofibrils and their barrier properties

Authors: Simyub Yook, Heetae Park, Hyeonji Park, Sun-Young Lee, Jaegyung Kwon, Hye Jung Youn

Published in: Cellulose | Issue 8/2020

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Abstract

Needs for biodegradable packaging materials are growing to reduce the negative environmental impact of petroleum-based polymer packaging. Barrier paper packaging is in demand as environmentally-friendly barrier coating materials to improve biodegradability and recyclability. Cellulose nanofibril (CNF) is considered an alternative to conventional polymers for barrier coatings due to the barrier properties of its films. In this work, various types of CNFs were prepared and coated on linerboard and wood-free paper to evaluate the barrier properties of these papers against air, liquid water, water vapor, oxygen, and grease, and the major factors of the barrier performance of the CNFs-based coatings were investigated. A coat weight of at least 10 g/m2 was desirable to impart efficient the barrier properties to papers. The average fibril size and hydrophobicity were strongly related to the barrier properties. CNFs with smaller fibril sizes are beneficial for enhancing barrier properties, and hydrophobization improves the water resistance. Hydrophobic functional groups with sufficient chain lengths decreased the water vapor barrier properties. The average fibril diameter of CNFs may be related to the air resistance, oxygen barrier properties, and grease resistance.

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Metadata
Title
Barrier coatings with various types of cellulose nanofibrils and their barrier properties
Authors
Simyub Yook
Heetae Park
Hyeonji Park
Sun-Young Lee
Jaegyung Kwon
Hye Jung Youn
Publication date
09-03-2020
Publisher
Springer Netherlands
Published in
Cellulose / Issue 8/2020
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-020-03061-5

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