Clearly transparent nanopaper from highly concentrated cellulose nanofiber dispersion using dilution and sonication

Kasuga, Takaaki; Isobe, Noriyuki; Yagyu, Hitomi; Koga, Hirotaka; Nogi, Masaya

doi:https://doi.org/10.3390/nano8020104

Clearly transparent nanopaper from highly concentrated cellulose nanofiber dispersion using dilution and sonication

Kasuga, Takaaki; Isobe, Noriyuki; Yagyu, Hitomi et al.

Nanomaterials, 2018, 8(2), 104

Number of Access:805（2025-08-14 11:47 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/78446

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Title	Clearly transparent nanopaper from highly concentrated cellulose nanofiber dispersion using dilution and sonication
Creator	NRID 1000040915584 1000040915584 researchmap permalink tkasuga tkasuga CreatorName Kasuga, Takaaki
	CreatorName Isobe, Noriyuki
	CreatorName Yagyu, Hitomi
	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 nanofiber
	Nanocellulose
	Transparent conductive film
	Transparent nanopaper
Description	Kasuga, T.; Isobe, N.; Yagyu, H.; Koga, H.; Nogi, M. Clearly Transparent Nanopaper from Highly Concentrated Cellulose Nanofiber Dispersion Using Dilution and Sonication. Nanomaterials 2018, 8, 104. https://doi.org/10.3390/nano8020104.
Abstract	Nanopaper prepared from holocellulose pulp is one of the best substrates for flexible electronics because of its high thermal resistance and high clear transparency. However, the clearness of nanopaper decreases with increasing concentration of the starting cellulose nanofiber dispersion—with the use of a 2.2 wt % dispersion, for example—resulting in translucent nanopaper with a high haze of 44%. To overcome this problem, we show that the dilution of this high-concentration dispersion with water followed by sonication for 10 s reduces the haze to less than 10% while maintaining the high thermal resistance of the nanopaper. Furthermore, the combination of water dilution and a short sonication treatment improves the clearness of the nanopaper, which would translate into cost savings for the transportation and storage of this highly concentrated cellulose nanofiber dispersion. Finally, we demonstrate the improvement of the electrical conductivity of clear transparent nanopaper prepared from an initially high-concentration dispersion by dropping and heating silver nanowire ink on the nanopaper. These achievements will pave the way toward the realization of the mass production of nanofiber-based flexible devices.
Publisher	MDPI
Source Title	Nanomaterials
Volume (Issue)	8(2)
Page	104
Date of Issued	2018-02-12
Language	English
Handle URL	https://hdl.handle.net/11094/78446
eISSN	20794991
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.3390/nano8020104
Access Rights	open access
CopyRight	© 2018 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

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Nanomaterials. 2018, 8(2), p. 104
DC.title	Clearly transparent nanopaper from highly concentrated cellulose nanofiber dispersion using dilution and sonication
DC.creator	Kasuga, Takaaki
	Isobe, Noriyuki
	Yagyu, Hitomi
	Koga, Hirotaka
	Nogi, Masaya
DC.publisher	MDPI
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2018-02-12
DC.identifier	https://doi.org/10.3390/nano8020104
DC.subject	Cellulose nanofiber
	Nanocellulose
	Transparent conductive film
	Transparent nanopaper
DC.description	Kasuga, T.; Isobe, N.; Yagyu, H.; Koga, H.; Nogi, M. Clearly Transparent Nanopaper from Highly Concentrated Cellulose Nanofiber Dispersion Using Dilution and Sonication. Nanomaterials 2018, 8, 104. https://doi.org/10.3390/nano8020104.
DCTERMS.abstract	Nanopaper prepared from holocellulose pulp is one of the best substrates for flexible electronics because of its high thermal resistance and high clear transparency. However, the clearness of nanopaper decreases with increasing concentration of the starting cellulose nanofiber dispersion—with the use of a 2.2 wt % dispersion, for example—resulting in translucent nanopaper with a high haze of 44%. To overcome this problem, we show that the dilution of this high-concentration dispersion with water followed by sonication for 10 s reduces the haze to less than 10% while maintaining the high thermal resistance of the nanopaper. Furthermore, the combination of water dilution and a short sonication treatment improves the clearness of the nanopaper, which would translate into cost savings for the transportation and storage of this highly concentrated cellulose nanofiber dispersion. Finally, we demonstrate the improvement of the electrical conductivity of clear transparent nanopaper prepared from an initially high-concentration dispersion by dropping and heating silver nanowire ink on the nanopaper. These achievements will pave the way toward the realization of the mass production of nanofiber-based flexible devices.
DC.rights	© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	78446
citation_title	Clearly transparent nanopaper from highly concentrated cellulose nanofiber dispersion using dilution and sonication
citation_author	Kasuga, Takaaki
	Isobe, Noriyuki
	Yagyu, Hitomi
	Koga, Hirotaka
	Nogi, Masaya
citation_publisher	MDPI
citation_language	English
citation_date	2018-02-12
citation_journal_title	Nanomaterials
citation_volume	8
citation_issue	2
citation_firstpage	104
citation_doi	https://doi.org/10.3390/nano8020104
citation_public_url	https://hdl.handle.net/11094/78446

Clearly transparent nanopaper from highly concentrated cellulose nanofiber dispersion using dilution and sonication

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