Twin-roll forming, a novel method for producing high-consistency microfibrillated cellulosic films

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2022-12
Major/Subject
Mcode
Degree programme
Language
en
Pages
9627-9636
Series
Cellulose, Volume 29, issue 18
Abstract
Micro-nano fibrillated cellulose (MNFC) films have the potential for applications in, e.g., packaging and printed electronics. However, the production paradigm for these types of products has still not been established. This study uses twin-rollers to form films from high consistency (15% w/w) micro fibrillated cellulose furnishes. MFC furnishes were produced at 20% wt dry matter content with enzymatic hydrolysis and PFI refining. We used the twin-roller method to spread the material over a supporting substrate by repeatedly passing between two parallel rollers with decreasing nip. Rheological behavior and physical properties of furnishes were analyzed. We found that only some furnishes with relatively short fiber lengths were formable. Refining improved the formation of the sheets. Roll-formed sheets showed comparable strength and formation to conventional wet-laid hand sheets.
Description
Funding Information: Open Access funding provided by Aalto University. This work was supported by Jane and Aatos Erkko foundation (3269-7422e).
Keywords
Enzyme treatment, Formability, High consistency, Microfibrillated cellulose, Nanocellulose, PFI refining, Rheology, Roll forming, Twin rollers
Other note
Citation
Sharifi Zamani , E , Ahadian , H & Maloney , T 2022 , ' Twin-roll forming, a novel method for producing high-consistency microfibrillated cellulosic films ' , Cellulose , vol. 29 , no. 18 , pp. 9627-9636 . https://doi.org/10.1007/s10570-022-04884-0