Transparent, water-stable, cellulose nanofiber-based packaging film with a low oxygen permeability

Joong-Kwon Kim; Byeongwook Choi; Jungho Jin

doi:10.1016/j.carbpol.2020.116823

Transparent, water-stable, cellulose nanofiber-based packaging film with a low oxygen permeability

Carbohydr Polym. 2020 Dec 1:249:116823. doi: 10.1016/j.carbpol.2020.116823. Epub 2020 Jul 29.

Authors

Joong-Kwon Kim¹, Byeongwook Choi¹, Jungho Jin²

Affiliations

¹ School of Materials Science and Engineering, University of Ulsan, Ulsan, 44776, Republic of Korea.
² School of Materials Science and Engineering, University of Ulsan, Ulsan, 44776, Republic of Korea. Electronic address: jinuine@ulsan.ac.kr.

PMID: 32933670
DOI: 10.1016/j.carbpol.2020.116823

Abstract

Herein, we report on a transparent, water-stable, high oxygen barrier packaging film made from a combination of cellulose nanofiber (CNF) and a fluoropolymer (FP) coating. Nanofibrillation of the hardwood kraft pulp was carried out using succinic anhydride pretreatment and aqueous counter collision (ACC) technique to obtain ultrafine (5-7 nm) succinylated cellulose nanofibers (SCNF), which was readily fabricated into a thin coating (on PET film) as well as a self-standing film. Introducing the FP topcoat on SCNF enabled a synergistic enhancement of both oxygen barrier performance and stability against water-swelling.

Keywords: Aqueous counter collision; Cellulose nanofiber; Fluoropolymer; Oxygen barrier film; Succinic anhydride.