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Published in: Cellulose 3/2022

08-01-2022 | Original Research

Freshwater-durable and marine-degradable cellulose nanofiber reinforced starch film

Authors: Raghav Soni, Taka-Aki Asoh, Yu-I Hsu, Hiroshi Uyama

Published in: Cellulose | Issue 3/2022

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Abstract

Cellulose can replace single-use petrochemical packaging; however, its lack of freshwater durability restricts its applicability. This study used a wet pulverization process to prepare mechanically fibrillated cellulose nanofibers (MCNFs). They were followed by sodium periodate oxidation to prepare oxidized cellulose nanofibers (OMCNFs). The MCNFs and OMCNFs were converted into films through solvent casting. The OMCNF film with an aldehyde concentration of 176 µmol/g had a wet tensile strength of ~ 20 MPa, which was significantly higher than that of the MCNF film (~ 2 MPa). In addition, the water durability of the OMCNF film could be further increased to ~ 35 MPa by adding hydroxypropyl starch (HPS). Moreover, starch addition enhanced the degradability of the OMCNF/HPS film in marine conditions. Thus, the OMCNF/HPS film had adequate freshwater durability and marine degradability and has the potential to serve as a next-generation packaging material.

Graphical abstract

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Appendix
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Metadata
Title
Freshwater-durable and marine-degradable cellulose nanofiber reinforced starch film
Authors
Raghav Soni
Taka-Aki Asoh
Yu-I Hsu
Hiroshi Uyama
Publication date
08-01-2022
Publisher
Springer Netherlands
Published in
Cellulose / Issue 3/2022
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-021-04410-8

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