Quantitative modelling of water transport in ultrathin cellulose nanofibril films

Minna Hakalahti, Eero Kontturi, Tekla Tammelin

Research output: Contribution to conferenceConference AbstractScientificpeer-review

Abstract

Cellulose nanoparticles exhibit distinct water uptake behaviour in response to changing humidity conditions. Models that describe the associated phenomena, such as diffusivity and permeability, are needed for fundamental understanding of behaviour of cellulose nanoparticles. Cellulose thin films combined with surface-sensitive methods provide a unique platform for studying the fundamental aspects of water transport in cellulose nanofibril films quantitatively. We use the quartz crystal microbalance with dissipation monitoring (QCM-D) equipped with humidity uptake module to determine the water diffusivity and permeability of water in ultrathin cellulose nanofibril films. Additionally, we evaluate the relevance of the Langmuir-Flory-Huggins bimodal sorption model with regard to cellulose nanofibril films over the whole range of water activity. The model provides new insights into the peculiar behaviour of cellulose nanofibrils with respect to applications, such as membranes, barriers and sensors.
Original languageEnglish
Publication statusPublished - Apr 2017
MoE publication typeNot Eligible
Event253rd ACS National Meeting - San Francisco, United States
Duration: 2 Apr 20176 Apr 2017

Conference

Conference253rd ACS National Meeting
CountryUnited States
CitySan Francisco
Period2/04/176/04/17

Fingerprint

nanofibers
films (materials)
cellulose
water
nanoparticles
diffusivity
humidity
permeability
quartz
water activity
water uptake
sorption
crystals
uptake mechanisms
monitoring

Cite this

Hakalahti, M., Kontturi, E., & Tammelin, T. (2017). Quantitative modelling of water transport in ultrathin cellulose nanofibril films. Abstract from 253rd ACS National Meeting, San Francisco, United States.
Hakalahti, Minna ; Kontturi, Eero ; Tammelin, Tekla. / Quantitative modelling of water transport in ultrathin cellulose nanofibril films. Abstract from 253rd ACS National Meeting, San Francisco, United States.
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Hakalahti, M, Kontturi, E & Tammelin, T 2017, 'Quantitative modelling of water transport in ultrathin cellulose nanofibril films' 253rd ACS National Meeting, San Francisco, United States, 2/04/17 - 6/04/17, .

Quantitative modelling of water transport in ultrathin cellulose nanofibril films. / Hakalahti, Minna; Kontturi, Eero; Tammelin, Tekla.

2017. Abstract from 253rd ACS National Meeting, San Francisco, United States.

Research output: Contribution to conferenceConference AbstractScientificpeer-review

TY - CONF

T1 - Quantitative modelling of water transport in ultrathin cellulose nanofibril films

AU - Hakalahti, Minna

AU - Kontturi, Eero

AU - Tammelin, Tekla

PY - 2017/4

Y1 - 2017/4

N2 - Cellulose nanoparticles exhibit distinct water uptake behaviour in response to changing humidity conditions. Models that describe the associated phenomena, such as diffusivity and permeability, are needed for fundamental understanding of behaviour of cellulose nanoparticles. Cellulose thin films combined with surface-sensitive methods provide a unique platform for studying the fundamental aspects of water transport in cellulose nanofibril films quantitatively. We use the quartz crystal microbalance with dissipation monitoring (QCM-D) equipped with humidity uptake module to determine the water diffusivity and permeability of water in ultrathin cellulose nanofibril films. Additionally, we evaluate the relevance of the Langmuir-Flory-Huggins bimodal sorption model with regard to cellulose nanofibril films over the whole range of water activity. The model provides new insights into the peculiar behaviour of cellulose nanofibrils with respect to applications, such as membranes, barriers and sensors.

AB - Cellulose nanoparticles exhibit distinct water uptake behaviour in response to changing humidity conditions. Models that describe the associated phenomena, such as diffusivity and permeability, are needed for fundamental understanding of behaviour of cellulose nanoparticles. Cellulose thin films combined with surface-sensitive methods provide a unique platform for studying the fundamental aspects of water transport in cellulose nanofibril films quantitatively. We use the quartz crystal microbalance with dissipation monitoring (QCM-D) equipped with humidity uptake module to determine the water diffusivity and permeability of water in ultrathin cellulose nanofibril films. Additionally, we evaluate the relevance of the Langmuir-Flory-Huggins bimodal sorption model with regard to cellulose nanofibril films over the whole range of water activity. The model provides new insights into the peculiar behaviour of cellulose nanofibrils with respect to applications, such as membranes, barriers and sensors.

M3 - Conference Abstract

ER -

Hakalahti M, Kontturi E, Tammelin T. Quantitative modelling of water transport in ultrathin cellulose nanofibril films. 2017. Abstract from 253rd ACS National Meeting, San Francisco, United States.