Degradable collagen/sodium alginate/polyvinyl butyral high barrier coating with water/oil-resistant in a facile and effective approach.

Xin Jing, Xia Li, Yifei Jiang, Jiang Lou, Zhuqing Liu, Qijun Ding, Wenjia Han

Carbohydrate polymers 2022 Feb 15

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Degradable bio-based materials have been widely considered as functional coatings, however, it is a great challenge to fabricate biodegradable coatings with high barrier, water- and oil- resistance. In this work, such coatings were fabricated by using collagen fibers (CF), sodium alginate (SA), and polyvinyl butyral (PVB). CF and SA were mixed evenly and coated on Ca2+ pretreated filter paper. It was mainly due to the electrostatic adsorption between collagen fibers and sodium alginate, and the crosslinking between the adsorption products and Ca2+. By coating PVB solution, the barrier performance was further improved. Notably, the composite exhibited excellent water vapor resistance (48 g/m2·24 h), water resistance (31 g/m2), oil resistance (kit rating: 12/12) and good mechanical properties. This degradable, environmentally friendly, and simple composite paper method has excellent barrier properties, mechanical properties and fluorine-free properties, and will have many applications in the food and packaging fields. Copyright © 2021. Published by Elsevier Ltd.

Citation

Xin Jing, Xia Li, Yifei Jiang, Jiang Lou, Zhuqing Liu, Qijun Ding, Wenjia Han. Degradable collagen/sodium alginate/polyvinyl butyral high barrier coating with water/oil-resistant in a facile and effective approach. Carbohydrate polymers. 2022 Feb 15;278:118962