Solvent impact on esterification and film formation ability of nanofibrillated cellulose

Sauli Vuoti (Corresponding Author), Riku Talja, L-S. Johansson, Harri Heikkinen, Tekla Tammelin

Research output: Contribution to journalArticleScientificpeer-review

24 Citations (Scopus)

Abstract

In this study we have manufactured nanofibrillar cellulose and modified the fibre surface with ester groups in order to hydrophobise the surface. Nanofibrillated cellulose was chosen to demonstrate the phenomena, since due to its high surface area the effects at issue are pronounced. The prepared NFC ester derivatives were butyrate, hexanoate, benzoate, naphtoate, diphenyl acetate, stearate and palmitate. X-ray photoelectron spectroscopy, solid state NMR and contact angle measurements were used to demonstrate the chemical changes taking place on the cellulose surface. NFC ester derivatives can be prepared after a careful solvent exchange to a water-free solvent medium has been carried out. Butyl and palmitoyl esters were chosen for film forming tests due to the difference in their carbon chain lengths, and their contact angles and water vapour and oxygen permeation rates were studied. The prepared nanocellulose esters show increased hydrophobicity even at very low levels of substitution and readily form films when the films are prepared from acetone dispersions. The permeation rates suggest a potential use as barrier materials.
Original languageEnglish
Pages (from-to)2359-2370
Number of pages12
JournalCellulose
Volume20
Issue number5
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Fingerprint

Esterification
Cellulose
Esters
Permeation
Contact angle
Derivatives
Stearates
Butyrates
Palmitates
Benzoates
Steam
Hydrophobicity
Angle measurement
Acetone
Dispersions
Chain length
Water vapor
Acetates
Substitution reactions
Carbon

Keywords

  • barrier materials
  • cellulose esters
  • films
  • nanofibrillated cellulose

Cite this

Vuoti, Sauli ; Talja, Riku ; Johansson, L-S. ; Heikkinen, Harri ; Tammelin, Tekla. / Solvent impact on esterification and film formation ability of nanofibrillated cellulose. In: Cellulose. 2013 ; Vol. 20, No. 5. pp. 2359-2370.
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Solvent impact on esterification and film formation ability of nanofibrillated cellulose. / Vuoti, Sauli (Corresponding Author); Talja, Riku; Johansson, L-S.; Heikkinen, Harri; Tammelin, Tekla.

In: Cellulose, Vol. 20, No. 5, 2013, p. 2359-2370.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Solvent impact on esterification and film formation ability of nanofibrillated cellulose

AU - Vuoti, Sauli

AU - Talja, Riku

AU - Johansson, L-S.

AU - Heikkinen, Harri

AU - Tammelin, Tekla

PY - 2013

Y1 - 2013

N2 - In this study we have manufactured nanofibrillar cellulose and modified the fibre surface with ester groups in order to hydrophobise the surface. Nanofibrillated cellulose was chosen to demonstrate the phenomena, since due to its high surface area the effects at issue are pronounced. The prepared NFC ester derivatives were butyrate, hexanoate, benzoate, naphtoate, diphenyl acetate, stearate and palmitate. X-ray photoelectron spectroscopy, solid state NMR and contact angle measurements were used to demonstrate the chemical changes taking place on the cellulose surface. NFC ester derivatives can be prepared after a careful solvent exchange to a water-free solvent medium has been carried out. Butyl and palmitoyl esters were chosen for film forming tests due to the difference in their carbon chain lengths, and their contact angles and water vapour and oxygen permeation rates were studied. The prepared nanocellulose esters show increased hydrophobicity even at very low levels of substitution and readily form films when the films are prepared from acetone dispersions. The permeation rates suggest a potential use as barrier materials.

AB - In this study we have manufactured nanofibrillar cellulose and modified the fibre surface with ester groups in order to hydrophobise the surface. Nanofibrillated cellulose was chosen to demonstrate the phenomena, since due to its high surface area the effects at issue are pronounced. The prepared NFC ester derivatives were butyrate, hexanoate, benzoate, naphtoate, diphenyl acetate, stearate and palmitate. X-ray photoelectron spectroscopy, solid state NMR and contact angle measurements were used to demonstrate the chemical changes taking place on the cellulose surface. NFC ester derivatives can be prepared after a careful solvent exchange to a water-free solvent medium has been carried out. Butyl and palmitoyl esters were chosen for film forming tests due to the difference in their carbon chain lengths, and their contact angles and water vapour and oxygen permeation rates were studied. The prepared nanocellulose esters show increased hydrophobicity even at very low levels of substitution and readily form films when the films are prepared from acetone dispersions. The permeation rates suggest a potential use as barrier materials.

KW - barrier materials

KW - cellulose esters

KW - films

KW - nanofibrillated cellulose

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JO - Cellulose

JF - Cellulose

SN - 0969-0239

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