WtF-Nano: One-Pot Dewatering and Water-Free Topochemical Modification of Nanocellulose in Ionic Liquids or γ-Valerolactone

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WtF-Nano : One-Pot Dewatering and Water-Free Topochemical Modification of Nanocellulose in Ionic Liquids or γ-Valerolactone. / Laaksonen, Tiina; Helminen, Jussi K.J.; Lemetti, Laura; Långbacka, Jesper; Rico del Cerro, Daniel; Hummel, Michael; Filpponen, Ilari; Rantamäki, Antti H.; Kakko, Tia; Kemell, Marianna L.; Wiedmer, Susanne K.; Heikkinen, Sami; Kilpeläinen, Ilkka; King, Alistair W.T.

In: ChemSusChem, Vol. 10, No. 24, 22.12.2017, p. 4879-4890.

Research output: Contribution to journalArticleScientificpeer-review

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Laaksonen, T, Helminen, JKJ, Lemetti, L, Långbacka, J, Rico del Cerro, D, Hummel, M, Filpponen, I, Rantamäki, AH, Kakko, T, Kemell, ML, Wiedmer, SK, Heikkinen, S, Kilpeläinen, I & King, AWT 2017, 'WtF-Nano: One-Pot Dewatering and Water-Free Topochemical Modification of Nanocellulose in Ionic Liquids or γ-Valerolactone', ChemSusChem, vol. 10, no. 24, pp. 4879-4890. https://doi.org/10.1002/cssc.201701344

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Laaksonen, Tiina ; Helminen, Jussi K.J. ; Lemetti, Laura ; Långbacka, Jesper ; Rico del Cerro, Daniel ; Hummel, Michael ; Filpponen, Ilari ; Rantamäki, Antti H. ; Kakko, Tia ; Kemell, Marianna L. ; Wiedmer, Susanne K. ; Heikkinen, Sami ; Kilpeläinen, Ilkka ; King, Alistair W.T. / WtF-Nano : One-Pot Dewatering and Water-Free Topochemical Modification of Nanocellulose in Ionic Liquids or γ-Valerolactone. In: ChemSusChem. 2017 ; Vol. 10, No. 24. pp. 4879-4890.

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@article{557f0b6e41164c8194cb476c2d139f29,
title = "WtF-Nano: One-Pot Dewatering and Water-Free Topochemical Modification of Nanocellulose in Ionic Liquids or γ-Valerolactone",
abstract = "Ionic liquids are used to dewater a suspension of birch Kraft pulp cellulose nanofibrils (CNF) and as a medium for water-free topochemical modification of the nanocellulose (a process denoted as “WtF-Nano”). Acetylation was applied as a model reaction to investigate the degree of modification and scope of effective ionic liquid structures. Little difference in reactivity was observed when water was removed, after introduction of an ionic liquid or molecular co-solvent. However, the viscoelastic properties of the CNF suspended in two ionic liquids show that the more basic, but non-dissolving ionic liquid, allows for better solvation of the CNF. Vibrio fischeri bacterial tests show that all ionic liquids in this study were harmless. Scanning electron microscopy and wide-angle X-ray scattering on regenerated samples show that the acetylated CNF is still in a fibrillar form. 1 D and 2 D NMR analyses, after direct dissolution in a novel ionic liquid electrolyte solution, indicate that both cellulose and residual xylan on the surface of the nanofibrils reacts to give acetate esters.",
keywords = "acetylation, cellulose, ionic liquids, nanofibers, topochemistry",
author = "Tiina Laaksonen and Helminen, {Jussi K.J.} and Laura Lemetti and Jesper L{\aa}ngbacka and {Rico del Cerro}, Daniel and Michael Hummel and Ilari Filpponen and Rantam{\"a}ki, {Antti H.} and Tia Kakko and Kemell, {Marianna L.} and Wiedmer, {Susanne K.} and Sami Heikkinen and Ilkka Kilpel{\"a}inen and King, {Alistair W.T.}",
year = "2017",
month = "12",
day = "22",
doi = "10.1002/cssc.201701344",
language = "English",
volume = "10",
pages = "4879--4890",
journal = "ChemSusChem",
issn = "1864-5631",
publisher = "WILEY-VCH VERLAG",
number = "24",

}

RIS - Download

TY - JOUR

T1 - WtF-Nano

T2 - One-Pot Dewatering and Water-Free Topochemical Modification of Nanocellulose in Ionic Liquids or γ-Valerolactone

AU - Laaksonen, Tiina

AU - Helminen, Jussi K.J.

AU - Lemetti, Laura

AU - Långbacka, Jesper

AU - Rico del Cerro, Daniel

AU - Hummel, Michael

AU - Filpponen, Ilari

AU - Rantamäki, Antti H.

AU - Kakko, Tia

AU - Kemell, Marianna L.

AU - Wiedmer, Susanne K.

AU - Heikkinen, Sami

AU - Kilpeläinen, Ilkka

AU - King, Alistair W.T.

PY - 2017/12/22

Y1 - 2017/12/22

N2 - Ionic liquids are used to dewater a suspension of birch Kraft pulp cellulose nanofibrils (CNF) and as a medium for water-free topochemical modification of the nanocellulose (a process denoted as “WtF-Nano”). Acetylation was applied as a model reaction to investigate the degree of modification and scope of effective ionic liquid structures. Little difference in reactivity was observed when water was removed, after introduction of an ionic liquid or molecular co-solvent. However, the viscoelastic properties of the CNF suspended in two ionic liquids show that the more basic, but non-dissolving ionic liquid, allows for better solvation of the CNF. Vibrio fischeri bacterial tests show that all ionic liquids in this study were harmless. Scanning electron microscopy and wide-angle X-ray scattering on regenerated samples show that the acetylated CNF is still in a fibrillar form. 1 D and 2 D NMR analyses, after direct dissolution in a novel ionic liquid electrolyte solution, indicate that both cellulose and residual xylan on the surface of the nanofibrils reacts to give acetate esters.

AB - Ionic liquids are used to dewater a suspension of birch Kraft pulp cellulose nanofibrils (CNF) and as a medium for water-free topochemical modification of the nanocellulose (a process denoted as “WtF-Nano”). Acetylation was applied as a model reaction to investigate the degree of modification and scope of effective ionic liquid structures. Little difference in reactivity was observed when water was removed, after introduction of an ionic liquid or molecular co-solvent. However, the viscoelastic properties of the CNF suspended in two ionic liquids show that the more basic, but non-dissolving ionic liquid, allows for better solvation of the CNF. Vibrio fischeri bacterial tests show that all ionic liquids in this study were harmless. Scanning electron microscopy and wide-angle X-ray scattering on regenerated samples show that the acetylated CNF is still in a fibrillar form. 1 D and 2 D NMR analyses, after direct dissolution in a novel ionic liquid electrolyte solution, indicate that both cellulose and residual xylan on the surface of the nanofibrils reacts to give acetate esters.

KW - acetylation

KW - cellulose

KW - ionic liquids

KW - nanofibers

KW - topochemistry

UR - http://www.scopus.com/inward/record.url?scp=85034957437&partnerID=8YFLogxK

U2 - 10.1002/cssc.201701344

DO - 10.1002/cssc.201701344

M3 - Article

AN - SCOPUS:85034957437

VL - 10

SP - 4879

EP - 4890

JO - ChemSusChem

JF - ChemSusChem

SN - 1864-5631

IS - 24

ER -

ID: 16586073