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Published in: Cellulose 3/2022

11-01-2022 | Original Research

Highly foldable, robust and water-resistant cellulose specialty paper reinforced by aramid nanofibers

Authors: Bin Yang, Qiankun Zhou, Meiyun Zhang, Lin Wang, Weiwei Li, Peng Lu

Published in: Cellulose | Issue 3/2022

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Abstract

Mechanical strength and water resistance are typical issues with cellulose paper due to the nature of cellulose. Specialty papers that are highly foldable, such as banknotes and securities, must be able to withstand multiple folding actions while also providing exceptional durability. In this paper, a multi-approach strategy involving direct addition, in-situ growth, and coating is proposed for introducing aramid nanofibers (ANFs) as 1D nanofillers and 2D membranes to improve the overall properties of cellulose specialty paper. The flexible and fatigue-resistant ANFs with a large aspect ratio play the roles of filling and bridging between cellulose fibers and ANF via massive hydrogen bonds. The resulting 1.5 wt% ANF reinforced paper has a tensile index of 79.1 N m/g, an impressive folding endurance of over 3500 times, and strong water resistance (a water contact angle of 85.2°). Furthermore, SEM observation of paper during various folding periods reveals that the filling and bridging effects of ANFs, as well as their highly entangled nanofibrous network, contribute to paper's excellent foldability. This work facilitates promising candidates for simultaneously achieving robust, highly foldable, durable and water-resistant cellulose specialty paper.

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Literature
go back to reference Wang Q, Du H, Zhang F, Zhang Y, Wu M, Yu G et al (2018) Flexible cellulose nanopaper with high wet tensile strength, high toughness and tunable ultraviolet blocking ability fabricated from tobacco stalk via a sustainable method. J Mater Chem A 6(27):13021–13030. https://doi.org/10.1039/C8TA01986JCrossRef Wang Q, Du H, Zhang F, Zhang Y, Wu M, Yu G et al (2018) Flexible cellulose nanopaper with high wet tensile strength, high toughness and tunable ultraviolet blocking ability fabricated from tobacco stalk via a sustainable method. J Mater Chem A 6(27):13021–13030. https://​doi.​org/​10.​1039/​C8TA01986JCrossRef
Metadata
Title
Highly foldable, robust and water-resistant cellulose specialty paper reinforced by aramid nanofibers
Authors
Bin Yang
Qiankun Zhou
Meiyun Zhang
Lin Wang
Weiwei Li
Peng Lu
Publication date
11-01-2022
Publisher
Springer Netherlands
Published in
Cellulose / Issue 3/2022
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-021-04404-6

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