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Structural and Thermal Characteristics of Novel Organosolv Lignins Extracted from Thai Biomass Residues: A Guide for Processing.

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Title: Structural and Thermal Characteristics of Novel Organosolv Lignins Extracted from Thai Biomass Residues: A Guide for Processing.
Authors: Wannid, Prapudsorn1 (AUTHOR), Hararak, Bongkot1 (AUTHOR), Padee, Sirada1 (AUTHOR), Klinsukhon, Wattana1 (AUTHOR), Suwannamek, Natthaphop1 (AUTHOR), Raita, Marisa2,3 (AUTHOR), Khao-on, Krit3 (AUTHOR), Prahsarn, Chureerat1 (AUTHOR) chureerp@mtec.or.th
Source: Journal of Polymers & the Environment. Jul2022, Vol. 30 Issue 7, p2739-2750. 12p.
Subject Terms: *Biomass, *Agricultural wastes, Lignin structure, Lignins, Chemical fingerprinting, Molecular structure
Abstract: This work was the first to reveal structural and thermal characteristics of biomass lignins obtained from Thai agricultural residues; bagasse (BG), para-rubber wood (PRW), and palm kernel shell (PKS). 31P NMR spectra revealed that PRW-lignin contained mainly C5-substituted hydroxyl group (OH) while PKS-lignin contained high portion of C5-substituted OH, followed by guaiacyl OH and p-hydroxyphenyl OH. BG-lignin contained equivalent portion of the three OH groups. Commercial organosolv (C) and kraft (S) lignins were found to consist of C5-substituted OH and guaiacyl OH. The structural information was confirmed by FTIR fingerprints. Such molecular structures influenced their thermal characteristics and processing. From GPC results, S-lignin had the highest Mw of 6.0 × 103 Da and PRW-lignin had the lowest Mw of 1.63 × 103 Da. TGA analysis revealed that S-lignin possessed the highest thermal stability (Td = 394.7 °C) while that of the others were in the range of 348.0–377.2 °C. Tg from DSC thermograms of C-, S-, BG-, PRW-, and PKS-lignins were 155.2, 139.9, 115.6, 98.5, and 142.3 °C, respectively. Extensive DSC investigation revealed a temperature window of processing for the biomass lignins, being between their Tg and 170 °C. This study offers important insight on Thai biomass lignins, which enable us to manipulate them efficiently during melt processing. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Polymers & the Environment is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Structural and Thermal Characteristics of Novel Organosolv Lignins Extracted from Thai Biomass Residues: A Guide for Processing.
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  Data: <searchLink fieldCode="AR" term="%22Wannid%2C+Prapudsorn%22">Wannid, Prapudsorn</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hararak%2C+Bongkot%22">Hararak, Bongkot</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Padee%2C+Sirada%22">Padee, Sirada</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Klinsukhon%2C+Wattana%22">Klinsukhon, Wattana</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Suwannamek%2C+Natthaphop%22">Suwannamek, Natthaphop</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Raita%2C+Marisa%22">Raita, Marisa</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Khao-on%2C+Krit%22">Khao-on, Krit</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Prahsarn%2C+Chureerat%22">Prahsarn, Chureerat</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chureerp@mtec.or.th</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Polymers+%26+the+Environment%22">Journal of Polymers & the Environment</searchLink>. Jul2022, Vol. 30 Issue 7, p2739-2750. 12p.
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  Data: *<searchLink fieldCode="DE" term="%22Biomass%22">Biomass</searchLink><br />*<searchLink fieldCode="DE" term="%22Agricultural+wastes%22">Agricultural wastes</searchLink><br /><searchLink fieldCode="DE" term="%22Lignin+structure%22">Lignin structure</searchLink><br /><searchLink fieldCode="DE" term="%22Lignins%22">Lignins</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+fingerprinting%22">Chemical fingerprinting</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+structure%22">Molecular structure</searchLink>
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  Label: Abstract
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  Data: This work was the first to reveal structural and thermal characteristics of biomass lignins obtained from Thai agricultural residues; bagasse (BG), para-rubber wood (PRW), and palm kernel shell (PKS). 31P NMR spectra revealed that PRW-lignin contained mainly C5-substituted hydroxyl group (OH) while PKS-lignin contained high portion of C5-substituted OH, followed by guaiacyl OH and p-hydroxyphenyl OH. BG-lignin contained equivalent portion of the three OH groups. Commercial organosolv (C) and kraft (S) lignins were found to consist of C5-substituted OH and guaiacyl OH. The structural information was confirmed by FTIR fingerprints. Such molecular structures influenced their thermal characteristics and processing. From GPC results, S-lignin had the highest Mw of 6.0 × 103 Da and PRW-lignin had the lowest Mw of 1.63 × 103 Da. TGA analysis revealed that S-lignin possessed the highest thermal stability (Td = 394.7 °C) while that of the others were in the range of 348.0–377.2 °C. Tg from DSC thermograms of C-, S-, BG-, PRW-, and PKS-lignins were 155.2, 139.9, 115.6, 98.5, and 142.3 °C, respectively. Extensive DSC investigation revealed a temperature window of processing for the biomass lignins, being between their Tg and 170 °C. This study offers important insight on Thai biomass lignins, which enable us to manipulate them efficiently during melt processing. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Polymers & the Environment is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10924-022-02387-4
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 2739
    Subjects:
      – SubjectFull: Biomass
        Type: general
      – SubjectFull: Agricultural wastes
        Type: general
      – SubjectFull: Lignin structure
        Type: general
      – SubjectFull: Lignins
        Type: general
      – SubjectFull: Chemical fingerprinting
        Type: general
      – SubjectFull: Molecular structure
        Type: general
    Titles:
      – TitleFull: Structural and Thermal Characteristics of Novel Organosolv Lignins Extracted from Thai Biomass Residues: A Guide for Processing.
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            NameFull: Wannid, Prapudsorn
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            – D: 01
              M: 07
              Text: Jul2022
              Type: published
              Y: 2022
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