Glass-like transparent and heat-sealable films of cellulose nanoworms <i>via</i> ethanol triggered swelling of esterified cellulose

Lakovaara, Matias; Sirviö, Juho Antti; Wang, Luyao; Suopajärvi, Terhi; Pratiwi, Feby; Zhang, Hao; Peltonen, Jouko; Xu, Chunlin; Liimatainen, Henrikki

doi:10.1039/d3ta05016e

J. Mater. Chem. A

2023

DOI: 10.1039/d3ta05016e

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Glass-like transparent and heat-sealable films of cellulose nanoworms via ethanol triggered swelling of esterified cellulose

Matias Lakovaara,

Juho Antti Sirviö,

Luyao Wang

et al.

Abstract: Producing a new type of cellulose nanomaterial using esterification of cellulose and ultrasonic treatment in ethanol.

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2024

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Cellulose Nanoworm Coatings for Enhancing the Water Resistance of Nanocellulose Film Substrates in Printed Electronics

Lakovaara,

Sirviö,

Sliz

et al. 2024

Biomacromolecules

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Cellulose-nanomaterial-derived films are promising platforms for engineering advanced substrates for printed electronics. However, they are highly susceptible to water and humidity, which limit their wide application. To overcome these drawbacks, cellulose nanoworms (distinct hydrophobized cellulose nanomaterials) were introduced in this study as sustainable coatings to enhance the water resistance of cellulose nanofiber (CNF) films. Alcogels of nanoworms, produced via ethanol-induced swelling and ultrasonication of a cellulose pulp esterified in a deep eutectic solvent, form a dense and transparent coating on the CNF films, significantly inhibiting their water absorption and improving their surface smoothness. Furthermore, the resulting coated CNF films exhibited enhanced hydrophobicity with improved wet mechanical properties and lower water vapor permeability. In addition, the results of the ink-printing tests revealed that the coated films partially or completely inhibited ink removal. Thus, this study demonstrated that cellulose nanoworm coatings provide a promising approach to overcome the moisture sensitivity of CNF films.

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Cellulose Nanoworm Coatings for Enhancing the Water Resistance of Nanocellulose Film Substrates in Printed Electronics

Lakovaara,

Sirviö,

Sliz

et al. 2024

Biomacromolecules

View full text Add to dashboard Cite

show abstract

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Glass-like transparent and heat-sealable films of cellulose nanoworms via ethanol triggered swelling of esterified cellulose

Abstract: Producing a new type of cellulose nanomaterial using esterification of cellulose and ultrasonic treatment in ethanol.

Cited by 1 publication

References 71 publications

Cellulose Nanoworm Coatings for Enhancing the Water Resistance of Nanocellulose Film Substrates in Printed Electronics

Cellulose Nanoworm Coatings for Enhancing the Water Resistance of Nanocellulose Film Substrates in Printed Electronics

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