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

doi:10.1021/acsami.5b12300

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 journal › Article › Scientific › peer-review

44 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 language	English
Pages (from-to)	2923-2927
Journal	ACS Applied Materials & Interfaces
Volume	8
Issue number	5
DOIs	https://doi.org/10.1021/acsami.5b12300
Publication status	Published - 2016
MoE publication type	A1 Journal article-refereed

Keywords

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

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10.1021/acsami.5b12300

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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.",

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

AU - Hakalahti, Minna

AU - Mautner, Andreas

AU - Johansson, Leena-Sisko

AU - Hänninen, Tuomas

AU - Setälä, Harri

AU - Kontturi, Eero

AU - Bismarck, Alexander

AU - Tammelin, Tekla

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PY - 2016

Y1 - 2016

N2 - 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.

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.

KW - cellulose nanofibrils

KW - films

KW - thermoresponsive polymers

KW - surface modification

KW - membranes

KW - poly(N-isopropylacrylamide)

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M3 - Article

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EP - 2927

JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

IS - 5

ER -

Direct Interfacial Modification of Nanocellulose Films for Thermoresponsive Membrane Templates

Abstract

Keywords

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