High-Throughput Tailoring of Nanocellulose Films : From Complex Bio-Based Materials to Defined Multifunctional Architectures
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2020-11-16
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Language
en
Pages
11
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ACS Applied Bio Materials, Volume 3, issue 11, pp. 7428-7438
Abstract
This paper demonstrates a high-throughput approach to fabricate nanocellulose films with multifunctional performance using conventionally existing unit operations. The approach comprises cast-coating and direct interfacial atmospheric plasma-assisted gas-phase modification along with the microscale patterning technique (nanoimprint lithography, NIL), all applied in roll-to-roll mode, to introduce organic functionalities in conjunction with structural manipulation. Our strategy results in multifunctional cellulose nanofibrils (CNF) films in which the high optical transmittance (∼90%) is retained while the haze can be adjusted (2-35%). Concomitantly, the hydrophobic/hydrophilic balance can be tuned (50-21 mJ/m2 with the water contact angle ranging from ∼20 up to ∼120°), while intrinsic hygroscopicity of CNF films is not significantly compromised. Therefore, a challenge to produce multifunctional bio-based materials with properties defined by various high-performance applications conjoined to the lack of efficient processing strategies is elucidated. Overall, economically and ecologically viable strategy, which was realized by facile and upscalable unit operations using the R2R technology, is introduced to expand the properties' spaces and thus offer a vast variety of interesting applications for CNF films.Description
| openaire: EC/H2020/760876/EU//INNPAPER
Keywords
cellulose nanofibrils film, hydrophobic and barrier coating, light management, plasma polymerization, surface chemical modification
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Citation
Khakalo, A, Mäkelä, T, Johansson, L S, Orelma, H & Tammelin, T 2020, ' High-Throughput Tailoring of Nanocellulose Films : From Complex Bio-Based Materials to Defined Multifunctional Architectures ', ACS Applied Bio Materials, vol. 3, no. 11, pp. 7428-7438 . https://doi.org/10.1021/acsabm.0c00576