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Optimization of polyol production via liquefaction from Acacia mangium and analysis of the polyols by traditional methods and two-dimensional correlation spectroscopy

  • Ismawati Palle EMAIL logo , Naruhito Hori , Tadahisa Iwata and Akio Takemura EMAIL logo
Published/Copyright: February 6, 2018
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Holzforschung
From the journal Holzforschung Volume 72 Issue 6

Abstract

The aim was to optimize the liquefaction conditions of Acacia mangium wood flour with polyethylene glycol (PEG#400) as the solvent in the presence of sulfuric acid as a catalyst under atmospheric pressure. Reaction time (30–180 min), temperature (130–170°C), and the solvent ratio (PEG/glycerol=0–25%) were varied to obtain the lowest residue content. The resulting polyol was characterized by their hydroxyl number (OHN), acid number (AN), viscosity, molecular weight (Mw), thermogravimetric analysis, Fourier transform infrared (FT-IR) and two-dimensional correlation spectroscopy (2D-COS). The OHN was lowered, AN and Mw were elevated as a function of increasing the reaction temperature and the time. Introducing glycerol in the PEG system markedly increased the OHN, AN and viscosity of the liquefied wood. The optimum condition was 80/20% ratio of PEG/glycerol at 150°C in 150 min leading to a 75% liquefaction yield. The 1730 cm−1 band was indicative for the esters in the liquefied product. The 2D-COS analysis showed that lignin is easily liquefied at high temperatures and a decreasing amount of PEG, and that the presence of glycerol significantly enhanced the 1730 cm−1 band.

Keywords: Acacia mangium; 2D IR correlation spectroscopy (2D-COS); FT-IR; glycerol; inter- and intramolecular interactions; liquefied wood; polyethylene glycol

Acknowledgments

The authors gratefully acknowledge the Sabah Softwood Berhad (SSB), Sabah, Malaysia for providing the Acacia mangium wood chips for this research

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Employment or leadership: None declared.

  4. Honorarium: None declared.

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Supplemental Material:

The online version of this article offers supplementary material (https://doi.org/10.1515/hf-2017-0076).

Received: 2017-5-15
Accepted: 2018-1-6
Published Online: 2018-2-6
Published in Print: 2018-6-27

©2018 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Original Articles
  3. Improvement of enzymatic digestibility of wood by a sequence of optimized milling procedures with final vibratory tube mills for the amorphization of cellulose
  4. The effect of delignification on the properties of cellulosic fiber material
  5. Optimization of polyol production via liquefaction from Acacia mangium and analysis of the polyols by traditional methods and two-dimensional correlation spectroscopy
  6. Differential proteome analysis of the extracts from the xylem of Cinnamomum camphora inhibiting Coriolus versicolor
  7. Review
  8. Nondestructive assessment and imaging methods for internal inspection of timber. A review.
  9. Effects of sample size on swelling and shrinkage of Larix kaempferi and Cryptomeria japonica as determined by digital caliper, image analysis, and digital image correlation (DIC)
  10. Preparation of a synergistically stabilized oil-in-water paraffin Pickering emulsion for potential application in wood treatment
  11. Improved wood properties via two-step grafting with itaconic acid (IA) and nano-SiO2
  12. Shear moduli in the longitudinal-radial and radial-tangential planes of Sitka spruce measured by torsional vibration tests
  13. Creep behavior of 3D core wood-strand sandwich panels
DOI:  doi.org/10.1515/hf-2017-0076
Keywords for this article
Acacia mangium; 2D IR correlation spectroscopy (2D-COS); FT-IR; glycerol; inter- and intramolecular interactions; liquefied wood; polyethylene glycol

Articles in the same Issue

  1. Frontmatter
  2. Original Articles
  3. Improvement of enzymatic digestibility of wood by a sequence of optimized milling procedures with final vibratory tube mills for the amorphization of cellulose
  4. The effect of delignification on the properties of cellulosic fiber material
  5. Optimization of polyol production via liquefaction from Acacia mangium and analysis of the polyols by traditional methods and two-dimensional correlation spectroscopy
  6. Differential proteome analysis of the extracts from the xylem of Cinnamomum camphora inhibiting Coriolus versicolor
  7. Review
  8. Nondestructive assessment and imaging methods for internal inspection of timber. A review.
  9. Effects of sample size on swelling and shrinkage of Larix kaempferi and Cryptomeria japonica as determined by digital caliper, image analysis, and digital image correlation (DIC)
  10. Preparation of a synergistically stabilized oil-in-water paraffin Pickering emulsion for potential application in wood treatment
  11. Improved wood properties via two-step grafting with itaconic acid (IA) and nano-SiO2
  12. Shear moduli in the longitudinal-radial and radial-tangential planes of Sitka spruce measured by torsional vibration tests
  13. Creep behavior of 3D core wood-strand sandwich panels
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