Cellulose nanofibril films as templates for functional membranes

Minna Hakalahti, Tuomas Hänninen, Harri Setälä, Andreas Mautner, Eero Kontturi, Alexander Bismarck, Tekla Tammelin

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

Renewable and sustainable membrane systems are required in technological fields ranging from water purification to biosensors and analytics. Tunable membrane materials are demanded for such systems, as each application entails its own characteristic performance requirements. Wood-based cellulose nanofibrils are intriguing building blocks for such materials due to their large surface area, strong film-forming tendency and numerous reactive groups. Reactive groups on fibril and film surfaces can be used for customizing mechanical and surface characteristics of the membrane material by chemical modification, enabling their utilization as for example organic solvent nanofilters and ion capturing materials. In this work, TEMPO oxidized cellulosic nanofibrils were covalently bonded with poly(vinyl alcohol) to render water stable films with adjustable mechanical properties. Stimuli-responsive poly(N-isopropylacrylamide) was grafted in order to control the hydrophilic-hydrophobic balance and adhesion properties of the membrane. Film characterization performed using surface sensitive methods showed that grafting could be carried out effectively as a surface reaction, without affecting the morphological features of the film. The nanocellulosic film developed here offers a template for diverse chemical modifications and can be tailored to meet the requirements of membrane applications.
Original languageEnglish
Title of host publicationYoung Researchers' Abstracts 2015
Publication statusPublished - 2015
EventMarcus Wallenberg Prize Award Symposium 2015: Young Researchers' Poster Session - Stockholm, Sweden
Duration: 28 Sep 201530 Sep 2015

Conference

ConferenceMarcus Wallenberg Prize Award Symposium 2015
CountrySweden
CityStockholm
Period28/09/1530/09/15

Fingerprint

Cellulose films
Membranes
Chemical modification
Water
Surface reactions
Biosensors
Cellulose
Organic solvents
Purification
Wood
Adhesion
Alcohols
Ions
Mechanical properties

Keywords

  • cellulose nanofibrils
  • films
  • membranes
  • TEMPO oxidation
  • poly(N-isopropylacrylamide)
  • stimuli-responsive polymers

Cite this

Hakalahti, M., Hänninen, T., Setälä, H., Mautner, A., Kontturi, E., Bismarck, A., & Tammelin, T. (2015). Cellulose nanofibril films as templates for functional membranes. In Young Researchers' Abstracts 2015
Hakalahti, Minna ; Hänninen, Tuomas ; Setälä, Harri ; Mautner, Andreas ; Kontturi, Eero ; Bismarck, Alexander ; Tammelin, Tekla. / Cellulose nanofibril films as templates for functional membranes. Young Researchers' Abstracts 2015. 2015.
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Hakalahti, M, Hänninen, T, Setälä, H, Mautner, A, Kontturi, E, Bismarck, A & Tammelin, T 2015, Cellulose nanofibril films as templates for functional membranes. in Young Researchers' Abstracts 2015. Marcus Wallenberg Prize Award Symposium 2015, Stockholm, Sweden, 28/09/15.

Cellulose nanofibril films as templates for functional membranes. / Hakalahti, Minna; Hänninen, Tuomas; Setälä, Harri; Mautner, Andreas; Kontturi, Eero; Bismarck, Alexander; Tammelin, Tekla.

Young Researchers' Abstracts 2015. 2015.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

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T1 - Cellulose nanofibril films as templates for functional membranes

AU - Hakalahti, Minna

AU - Hänninen, Tuomas

AU - Setälä, Harri

AU - Mautner, Andreas

AU - Kontturi, Eero

AU - Bismarck, Alexander

AU - Tammelin, Tekla

PY - 2015

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N2 - Renewable and sustainable membrane systems are required in technological fields ranging from water purification to biosensors and analytics. Tunable membrane materials are demanded for such systems, as each application entails its own characteristic performance requirements. Wood-based cellulose nanofibrils are intriguing building blocks for such materials due to their large surface area, strong film-forming tendency and numerous reactive groups. Reactive groups on fibril and film surfaces can be used for customizing mechanical and surface characteristics of the membrane material by chemical modification, enabling their utilization as for example organic solvent nanofilters and ion capturing materials. In this work, TEMPO oxidized cellulosic nanofibrils were covalently bonded with poly(vinyl alcohol) to render water stable films with adjustable mechanical properties. Stimuli-responsive poly(N-isopropylacrylamide) was grafted in order to control the hydrophilic-hydrophobic balance and adhesion properties of the membrane. Film characterization performed using surface sensitive methods showed that grafting could be carried out effectively as a surface reaction, without affecting the morphological features of the film. The nanocellulosic film developed here offers a template for diverse chemical modifications and can be tailored to meet the requirements of membrane applications.

AB - Renewable and sustainable membrane systems are required in technological fields ranging from water purification to biosensors and analytics. Tunable membrane materials are demanded for such systems, as each application entails its own characteristic performance requirements. Wood-based cellulose nanofibrils are intriguing building blocks for such materials due to their large surface area, strong film-forming tendency and numerous reactive groups. Reactive groups on fibril and film surfaces can be used for customizing mechanical and surface characteristics of the membrane material by chemical modification, enabling their utilization as for example organic solvent nanofilters and ion capturing materials. In this work, TEMPO oxidized cellulosic nanofibrils were covalently bonded with poly(vinyl alcohol) to render water stable films with adjustable mechanical properties. Stimuli-responsive poly(N-isopropylacrylamide) was grafted in order to control the hydrophilic-hydrophobic balance and adhesion properties of the membrane. Film characterization performed using surface sensitive methods showed that grafting could be carried out effectively as a surface reaction, without affecting the morphological features of the film. The nanocellulosic film developed here offers a template for diverse chemical modifications and can be tailored to meet the requirements of membrane applications.

KW - cellulose nanofibrils

KW - films

KW - membranes

KW - TEMPO oxidation

KW - poly(N-isopropylacrylamide)

KW - stimuli-responsive polymers

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Hakalahti M, Hänninen T, Setälä H, Mautner A, Kontturi E, Bismarck A et al. Cellulose nanofibril films as templates for functional membranes. In Young Researchers' Abstracts 2015. 2015