High-speed fabrication of clear transparent cellulose nanopaper by applying humidity-controlled multi-stage drying method

Li, Chenyang; Kasuga, Takaaki; Uetani, Kojiro et al.

Nanomaterials, 2020, 10(11), 2194

Number of Access:840（2025-08-15 06:45 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/78433

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Title
High-speed fabrication of clear transparent cellulose nanopaper by applying humidity-controlled multi-stage drying method
Creator
CreatorName
Li, Chenyang
NRID
1000040915584 1000040915584
researchmap permalink
tkasuga tkasuga
CreatorName
Kasuga, Takaaki
NRID
1000020733306 1000020733306
CreatorName
Uetani, Kojiro
NRID
1000030634539 1000030634539
ORCID
0000-0001-6295-1731 0000-0001-6295-1731
researchmap permalink
hkoga hkoga
Scopus Author ID
7201439917 7201439917
CreatorName
Koga, Hirotaka
NRID
1000080379031 1000080379031
researchmap permalink
read0151141 read0151141
Scopus Author ID
9846851200 9846851200
CreatorName
Nogi, Masaya
Subject
Cellulose nanofibers
Fast-drying fabrication
Multi-stage drying
Relative humidity control
Transparent nanopaper
Description
Li, C.; Kasuga, T.; Uetani, K.; Koga, H.; Nogi, M. High-Speed Fabrication of Clear Transparent Cellulose Nanopaper by Applying Humidity-Controlled Multi-Stage Drying Method. Nanomaterials 2020, 10, 2194. https://doi.org/10.3390/nano10112194.
Abstract
As a renewable nanomaterial, transparent nanopaper is one of the promising materials for electronic devices. Although conventional evaporation drying method endows nanopaper with superior optical properties, the long fabrication time limits its widely use. In this work, we propose a multi-stage drying method to achieve high-speed fabrication of clear transparent nanopaper. Drying experiments reveal that nanopaper’s drying process can be separated into two periods. For the conventional single-stage evaporation drying, the drying condition is kept the same. In our newly proposed multi-stage drying, the relative humidity (RH), which is the key parameter for both drying time and haze, is set differently during these two periods. Applying this method in a humidity-controllable environmental chamber, the drying time can be shortened by 35% (from 11.7 h to 7.6 h) while maintaining the same haze level as that from single-stage drying. For a conventional humidity-uncontrollable oven, a special air flow system is added. The air flow system enables decrease of RH by removing water vapor at the water/air interface during the earlier period, thus fabricating clear transparent nanopaper in a relatively short time. Therefore, this humidity-controlled multi-stage drying method will help reduce the manufacturing time and encourage the widespread use of future nanopaper-based flexible electronics.
Publisher
MDPI
Source Title
Nanomaterials
Volume (Issue)
10(11)
Page
2194
Date of Issued
2020-11-04
Language
English
Handle URL
https://hdl.handle.net/11094/78433
eISSN
20794991
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.3390/nano10112194
Access Rights
open access
CopyRight
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article