Carboxymethylcellulose from bleached organosolv fibers of Eucalyptus nitens: synthesis and physicochemical characterization

M. Yáñez-S, B. Matsuhiro, S. Maldonado, R. González, J. Luengo, O. Uyarte, D. Serafine, S. Moya, J. Romero, R. Torres, M.J. Kogan

Research output: Contribution to journalArticle

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Abstract

The objective of the present study was to synthesize sodium carboxymethylcellulose from Eucalyptus nitens cellulose. The cellulose extraction was carried out in three stages. In the first stage, E. nitens wood was fractionated using an organosolv pretreatment (methanol–water 50% v/v, 45 min at 200 °C) followed by an alkaline extraction (NaOH, 1.5 M). Finally, the organosolv pulp was bleached using NaClO2 (1.3% w/v, pH 3.8). The bleached cellulose obtained was converted to sodium carboxymethylcellulose (NaCMC) by an etherification reaction in isopropanol medium. NaCMC structure, morphology and properties were researched using FTIR, 1H and 13C NMR spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The results indicate substitution mostly occurred mostly at the C-6 position of 1 → 4 β-d-glucopyranosyl residues of cellulose chains. © 2018 Springer Science+Business Media B.V., part of Springer Nature
LanguageEnglish
Pages1-14
Number of pages14
JournalCellulose
DOIs
Publication statusPublished - 2018

Fingerprint

Carboxymethylcellulose Sodium
Cellulose
Fibers
Sodium
Bleached pulp
2-Propanol
Nuclear magnetic resonance spectroscopy
Methanol
Thermogravimetric analysis
Wood
Substitution reactions
Scanning electron microscopy
Water

Keywords

  • Carboxymethylcellulose
  • Cellulose
  • Eucalyptus nitens
  • Organosolv
  • Alkalinity
  • Bleaching
  • Chlorine compounds
  • Cleaning
  • Extraction
  • Fourier transform infrared spectroscopy
  • Nuclear magnetic resonance spectroscopy
  • Scanning electron microscopy
  • Sodium
  • Sodium hydroxide
  • Carboxy methylcellulose
  • Cellulose extraction
  • Etherification reactions
  • Organosolv pretreatment
  • Physico-chemical characterization
  • Sodium carboxymethylcellulose
  • Thermogravimetric analysis

Cite this

Carboxymethylcellulose from bleached organosolv fibers of Eucalyptus nitens: synthesis and physicochemical characterization. / Yáñez-S, M.; Matsuhiro, B.; Maldonado, S.; González, R.; Luengo, J.; Uyarte, O.; Serafine, D.; Moya, S.; Romero, J.; Torres, R.; Kogan, M.J.

In: Cellulose, 2018, p. 1-14.

Research output: Contribution to journalArticle

Yáñez-S, M. ; Matsuhiro, B. ; Maldonado, S. ; González, R. ; Luengo, J. ; Uyarte, O. ; Serafine, D. ; Moya, S. ; Romero, J. ; Torres, R. ; Kogan, M.J. / Carboxymethylcellulose from bleached organosolv fibers of Eucalyptus nitens: synthesis and physicochemical characterization. In: Cellulose. 2018 ; pp. 1-14.
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abstract = "The objective of the present study was to synthesize sodium carboxymethylcellulose from Eucalyptus nitens cellulose. The cellulose extraction was carried out in three stages. In the first stage, E. nitens wood was fractionated using an organosolv pretreatment (methanol–water 50{\%} v/v, 45 min at 200 °C) followed by an alkaline extraction (NaOH, 1.5 M). Finally, the organosolv pulp was bleached using NaClO2 (1.3{\%} w/v, pH 3.8). The bleached cellulose obtained was converted to sodium carboxymethylcellulose (NaCMC) by an etherification reaction in isopropanol medium. NaCMC structure, morphology and properties were researched using FTIR, 1H and 13C NMR spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The results indicate substitution mostly occurred mostly at the C-6 position of 1 → 4 β-d-glucopyranosyl residues of cellulose chains. {\circledC} 2018 Springer Science+Business Media B.V., part of Springer Nature",
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AU - Maldonado, S.

AU - González, R.

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PY - 2018

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N2 - The objective of the present study was to synthesize sodium carboxymethylcellulose from Eucalyptus nitens cellulose. The cellulose extraction was carried out in three stages. In the first stage, E. nitens wood was fractionated using an organosolv pretreatment (methanol–water 50% v/v, 45 min at 200 °C) followed by an alkaline extraction (NaOH, 1.5 M). Finally, the organosolv pulp was bleached using NaClO2 (1.3% w/v, pH 3.8). The bleached cellulose obtained was converted to sodium carboxymethylcellulose (NaCMC) by an etherification reaction in isopropanol medium. NaCMC structure, morphology and properties were researched using FTIR, 1H and 13C NMR spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The results indicate substitution mostly occurred mostly at the C-6 position of 1 → 4 β-d-glucopyranosyl residues of cellulose chains. © 2018 Springer Science+Business Media B.V., part of Springer Nature

AB - The objective of the present study was to synthesize sodium carboxymethylcellulose from Eucalyptus nitens cellulose. The cellulose extraction was carried out in three stages. In the first stage, E. nitens wood was fractionated using an organosolv pretreatment (methanol–water 50% v/v, 45 min at 200 °C) followed by an alkaline extraction (NaOH, 1.5 M). Finally, the organosolv pulp was bleached using NaClO2 (1.3% w/v, pH 3.8). The bleached cellulose obtained was converted to sodium carboxymethylcellulose (NaCMC) by an etherification reaction in isopropanol medium. NaCMC structure, morphology and properties were researched using FTIR, 1H and 13C NMR spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The results indicate substitution mostly occurred mostly at the C-6 position of 1 → 4 β-d-glucopyranosyl residues of cellulose chains. © 2018 Springer Science+Business Media B.V., part of Springer Nature

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KW - Fourier transform infrared spectroscopy

KW - Nuclear magnetic resonance spectroscopy

KW - Scanning electron microscopy

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KW - Physico-chemical characterization

KW - Sodium carboxymethylcellulose

KW - Thermogravimetric analysis

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