Electrically Conductive Thin Films Based on Nanofibrillated Cellulose: Interactions with Water and Applications in Humidity Sensing

Katariina Solin; Maryam Borghei; Ozlem Sel; Hannes Orelma; Leena Sisko Johansson; Hubert Perrot; Orlando J. Rojas

doi:10.1021/acsami.0c09997

Electrically Conductive Thin Films Based on Nanofibrillated Cellulose: Interactions with Water and Applications in Humidity Sensing

Katariina Solin
, Maryam Borghei
, Ozlem Sel^*
, Hannes Orelma
, Leena Sisko Johansson
, Hubert Perrot
, Orlando J. Rojas^*

^*Corresponding author for this work

Aalto University
Pierre and Marie Curie University
University of British Columbia

Research output: Contribution to journal › Article › Scientific › peer-review

30 Citations (Scopus)

Abstract

TEMPO-oxidized cellulose nanofibrils (TOCNF) and oxidized carbon nanotubes (CNT) were used as humidity-responsive films and evaluated using electroacoustic admittance (quartz crystal microbalance with impedance monitoring, QCM-I) and electrical resistivity. Water uptake and swelling phenomena were investigated in a range of relative humidity (% RH) between 30 and 60% and temperatures between 25 and 50 °C. The presence of CNT endowed fibril networks with high water accessibility, enabling fast and sensitive response to changes in humidity, with mass gains of up to 20%. The TOCNF-based sensors became viscoelastic upon water uptake, as quantified by the Martin-Granstaff model. Sensing elements were supported on glass and paper substrates and confirmed a wide window of operation in terms of cyclic % RH, bending, adhesion, and durability. The electrical resistance of the supported films increased by ∼15% with changes in % RH from 20 to 60%. The proposed system offers a great potential to monitor changes in smart packaging.

Original language	English
Pages (from-to)	36437-36448
Journal	ACS Applied Materials & Interfaces
Volume	12
Issue number	32
DOIs	https://doi.org/10.1021/acsami.0c09997
Publication status	Published - 12 Aug 2020
MoE publication type	A1 Journal article-refereed

Funding

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 760876. This work was a part of the Academy of Finland’s Flagship Programme under projects nos. 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES). K.S. acknowledges funding by the Aalto University School of Chemical Engineering doctoral programme. The authors acknowledge the provision of facilities and technical support by Aalto University at OtaNano—Nanomicroscopy Center (Aalto-NMC). Finally, O.J.R. acknowledges funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (ERC Advanced Grant Agreement No. 788489, “BioElCell”), the Canada Excellence Research Chair initiative, and the Canada Foundation for Innovation (CFI).

Keywords

carbon nanotubes
conductive ink
humidity sensing
nanocellulose
quartz crystal microbalance with impedance measurement (QCM-I)
viscoelastic properties
water interactions

Access to Document

10.1021/acsami.0c09997

Cite this

@article{129194d978324f869a51089d0ceba7f7,

title = "Electrically Conductive Thin Films Based on Nanofibrillated Cellulose: Interactions with Water and Applications in Humidity Sensing",

abstract = "TEMPO-oxidized cellulose nanofibrils (TOCNF) and oxidized carbon nanotubes (CNT) were used as humidity-responsive films and evaluated using electroacoustic admittance (quartz crystal microbalance with impedance monitoring, QCM-I) and electrical resistivity. Water uptake and swelling phenomena were investigated in a range of relative humidity (\% RH) between 30 and 60\% and temperatures between 25 and 50 °C. The presence of CNT endowed fibril networks with high water accessibility, enabling fast and sensitive response to changes in humidity, with mass gains of up to 20\%. The TOCNF-based sensors became viscoelastic upon water uptake, as quantified by the Martin-Granstaff model. Sensing elements were supported on glass and paper substrates and confirmed a wide window of operation in terms of cyclic \% RH, bending, adhesion, and durability. The electrical resistance of the supported films increased by ∼15\% with changes in \% RH from 20 to 60\%. The proposed system offers a great potential to monitor changes in smart packaging.",

keywords = "carbon nanotubes, conductive ink, humidity sensing, nanocellulose, quartz crystal microbalance with impedance measurement (QCM-I), viscoelastic properties, water interactions",

author = "Katariina Solin and Maryam Borghei and Ozlem Sel and Hannes Orelma and Johansson, \{Leena Sisko\} and Hubert Perrot and Rojas, \{Orlando J.\}",

note = "Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",

year = "2020",

month = aug,

day = "12",

doi = "10.1021/acsami.0c09997",

language = "English",

volume = "12",

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AU - Solin, Katariina

AU - Borghei, Maryam

AU - Sel, Ozlem

AU - Orelma, Hannes

AU - Johansson, Leena Sisko

AU - Perrot, Hubert

AU - Rojas, Orlando J.

PY - 2020/8/12

Y1 - 2020/8/12

N2 - TEMPO-oxidized cellulose nanofibrils (TOCNF) and oxidized carbon nanotubes (CNT) were used as humidity-responsive films and evaluated using electroacoustic admittance (quartz crystal microbalance with impedance monitoring, QCM-I) and electrical resistivity. Water uptake and swelling phenomena were investigated in a range of relative humidity (% RH) between 30 and 60% and temperatures between 25 and 50 °C. The presence of CNT endowed fibril networks with high water accessibility, enabling fast and sensitive response to changes in humidity, with mass gains of up to 20%. The TOCNF-based sensors became viscoelastic upon water uptake, as quantified by the Martin-Granstaff model. Sensing elements were supported on glass and paper substrates and confirmed a wide window of operation in terms of cyclic % RH, bending, adhesion, and durability. The electrical resistance of the supported films increased by ∼15% with changes in % RH from 20 to 60%. The proposed system offers a great potential to monitor changes in smart packaging.

AB - TEMPO-oxidized cellulose nanofibrils (TOCNF) and oxidized carbon nanotubes (CNT) were used as humidity-responsive films and evaluated using electroacoustic admittance (quartz crystal microbalance with impedance monitoring, QCM-I) and electrical resistivity. Water uptake and swelling phenomena were investigated in a range of relative humidity (% RH) between 30 and 60% and temperatures between 25 and 50 °C. The presence of CNT endowed fibril networks with high water accessibility, enabling fast and sensitive response to changes in humidity, with mass gains of up to 20%. The TOCNF-based sensors became viscoelastic upon water uptake, as quantified by the Martin-Granstaff model. Sensing elements were supported on glass and paper substrates and confirmed a wide window of operation in terms of cyclic % RH, bending, adhesion, and durability. The electrical resistance of the supported films increased by ∼15% with changes in % RH from 20 to 60%. The proposed system offers a great potential to monitor changes in smart packaging.

KW - carbon nanotubes

KW - conductive ink

KW - humidity sensing

KW - nanocellulose

KW - quartz crystal microbalance with impedance measurement (QCM-I)

KW - viscoelastic properties

KW - water interactions

UR - https://www.scopus.com/pages/publications/85089711694

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DO - 10.1021/acsami.0c09997

M3 - Article

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SN - 1944-8244

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JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

IS - 32

ER -

Electrically Conductive Thin Films Based on Nanofibrillated Cellulose: Interactions with Water and Applications in Humidity Sensing

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Electrically Conductive Thin Films Based on Nanofibrillated Cellulose: Interactions with Water and Applications in Humidity Sensing

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INNPAPER: Innovative and Smart Printed Electronics based on Multifunctionalized Paper: from Smart Labelling to Point of Care Bioplatforms

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