Direct Interfacial Modification of Nanocellulose Films for Thermoresponsive Membrane Templates

Minna Hakalahti, Andreas Mautner, Leena-Sisko Johansson, Tuomas Hänninen, Harri Setälä, Eero Kontturi, Alexander Bismarck, Tekla Tammelin

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)

Abstract

This letter proposes a strategy to construct tunable films combining the physical characteristics of cellulose nanofibrils and smart polymers for membrane applications. A functional membrane template was obtained by first fabricating a water stable film from cellulose nanofibrils and subsequently surface grafting it with a thermoresponsive polymer, poly(N-isopropylacrylamide). The behavior of the membrane template was dependent on temperature. The slope of relative water permeance around the lower critical solution temperature of poly(N-isopropylacrylamide) increased from 18 % to 100 % upon polymer attachment. While the membrane template essentially consisted of wood-based materials, the benefits of smart synthetic polymers were achieved.
Original languageEnglish
Pages (from-to)2923-2927
JournalACS applied materials & interfaces
Volume8
Issue number5
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

Polymers
Membranes
Cellulose
Water
Wood
Temperature
poly-N-isopropylacrylamide

Keywords

  • cellulose nanofibrils
  • films
  • thermoresponsive polymers
  • surface modification
  • membranes
  • poly(N-isopropylacrylamide)

Cite this

Hakalahti, Minna ; Mautner, Andreas ; Johansson, Leena-Sisko ; Hänninen, Tuomas ; Setälä, Harri ; Kontturi, Eero ; Bismarck, Alexander ; Tammelin, Tekla. / Direct Interfacial Modification of Nanocellulose Films for Thermoresponsive Membrane Templates. In: ACS applied materials & interfaces. 2016 ; Vol. 8, No. 5. pp. 2923-2927.
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Direct Interfacial Modification of Nanocellulose Films for Thermoresponsive Membrane Templates. / Hakalahti, Minna; Mautner, Andreas; Johansson, Leena-Sisko; Hänninen, Tuomas; Setälä, Harri; Kontturi, Eero; Bismarck, Alexander; Tammelin, Tekla.

In: ACS applied materials & interfaces, Vol. 8, No. 5, 2016, p. 2923-2927.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Direct Interfacial Modification of Nanocellulose Films for Thermoresponsive Membrane Templates

AU - Hakalahti, Minna

AU - Mautner, Andreas

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AU - Setälä, Harri

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AB - This letter proposes a strategy to construct tunable films combining the physical characteristics of cellulose nanofibrils and smart polymers for membrane applications. A functional membrane template was obtained by first fabricating a water stable film from cellulose nanofibrils and subsequently surface grafting it with a thermoresponsive polymer, poly(N-isopropylacrylamide). The behavior of the membrane template was dependent on temperature. The slope of relative water permeance around the lower critical solution temperature of poly(N-isopropylacrylamide) increased from 18 % to 100 % upon polymer attachment. While the membrane template essentially consisted of wood-based materials, the benefits of smart synthetic polymers were achieved.

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