A study of poplar organosolv lignin after melt rheology treatment as carbon fiber precursors

Qining Sun; Ratayakorn Khunsupat; Kokouvi Akato; Jingming Tao; Nicole Labbé; Nidia C. Gallego; Joseph J. Bozell; Timothy G. Rials; Gerald A. Tuskan; Timothy J. Tschaplinski; Amit K. Naskar; Yunqiao Pu; Arthur J. Ragauskas

doi:10.1039/c6gc00977h

A study of poplar organosolv lignin after melt rheology treatment as carbon fiber precursors

Qining Sun, Ratayakorn Khunsupat, Kokouvi Akato, Jingming Tao, Nicole Labbé, Nidia C. Gallego, Joseph J. Bozell, Timothy G. Rials, Gerald A. Tuskan, Timothy J. Tschaplinski, Amit K. Naskar, Yunqiao Pu, Arthur J. Ragauskas

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89 Scopus citations

Abstract

Lignins from various poplar genotypes were isolated by using organosolv fractionation and subjected to rheological treatment at various temperatures. Physicochemical characterization of the lignin variants shows a broad distribution of glass transition temperatures, melt viscosity, and pyrolysis char residues. Rheological treatment at 170 °C induces lignin repolymerization accompanied with an increase in condensed linkages, molecular weights, and viscosities. In contrast, rheology testing at 190 °C results in the decrease in lignin aliphatic and phenolic hydroxyl groups, β-O-aryl ether linkages, molecular weights, and viscosity values. Lignin under air cooling generates more oxygenated and condensed compounds, but lower amounts of ether linkages than lignin cooled under nitrogen. Lignin with a lower syringyl/guaiacyl ratio tends to form more cross-linkages along with higher viscosity values, higher molecular weight and larger amounts of condensed bonds.

Original language	English
Pages (from-to)	5015-5024
Number of pages	10
Journal	Green Chemistry
Volume	18
Issue number	18
DOIs	https://doi.org/10.1039/c6gc00977h
State	Published - 2016

Funding

Part of the research was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL), managed by UT-Battelle, LLC, for the U.S. Department of Energy. This work was also supported and performed as part of the BioEnergy Science Center. The BioEnergy Science Center is a U.S. Department of Energy Bioenergy Research Center supported by the Office of Biological and Environmental Research in the DOE Office of Science. The Georgia Tech authors also acknowledge the financial support from the paper science engineering (PSE) fellowship program in Renewable Bioproducts Institute at Georgia Institute of Technology.

Funders	Funder number
BioEnergy Science Center
DOE Office of Science
Office of Biological and Environmental Research
U.S. Department of Energy Bioenergy Research Center
UT-Battelle
U.S. Department of Energy
Oak Ridge National Laboratory
Georgia Institute of Technology

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title = "A study of poplar organosolv lignin after melt rheology treatment as carbon fiber precursors",

abstract = "Lignins from various poplar genotypes were isolated by using organosolv fractionation and subjected to rheological treatment at various temperatures. Physicochemical characterization of the lignin variants shows a broad distribution of glass transition temperatures, melt viscosity, and pyrolysis char residues. Rheological treatment at 170 °C induces lignin repolymerization accompanied with an increase in condensed linkages, molecular weights, and viscosities. In contrast, rheology testing at 190 °C results in the decrease in lignin aliphatic and phenolic hydroxyl groups, β-O-aryl ether linkages, molecular weights, and viscosity values. Lignin under air cooling generates more oxygenated and condensed compounds, but lower amounts of ether linkages than lignin cooled under nitrogen. Lignin with a lower syringyl/guaiacyl ratio tends to form more cross-linkages along with higher viscosity values, higher molecular weight and larger amounts of condensed bonds.",

author = "Qining Sun and Ratayakorn Khunsupat and Kokouvi Akato and Jingming Tao and Nicole Labb{\'e} and Gallego, {Nidia C.} and Bozell, {Joseph J.} and Rials, {Timothy G.} and Tuskan, {Gerald A.} and Tschaplinski, {Timothy J.} and Naskar, {Amit K.} and Yunqiao Pu and Ragauskas, {Arthur J.}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2016.",

year = "2016",

doi = "10.1039/c6gc00977h",

language = "English",

volume = "18",

pages = "5015--5024",

journal = "Green Chemistry",

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AU - Sun, Qining

AU - Khunsupat, Ratayakorn

AU - Akato, Kokouvi

AU - Tao, Jingming

AU - Labbé, Nicole

AU - Gallego, Nidia C.

AU - Bozell, Joseph J.

AU - Rials, Timothy G.

AU - Tuskan, Gerald A.

AU - Tschaplinski, Timothy J.

AU - Naskar, Amit K.

AU - Pu, Yunqiao

AU - Ragauskas, Arthur J.

PY - 2016

Y1 - 2016

N2 - Lignins from various poplar genotypes were isolated by using organosolv fractionation and subjected to rheological treatment at various temperatures. Physicochemical characterization of the lignin variants shows a broad distribution of glass transition temperatures, melt viscosity, and pyrolysis char residues. Rheological treatment at 170 °C induces lignin repolymerization accompanied with an increase in condensed linkages, molecular weights, and viscosities. In contrast, rheology testing at 190 °C results in the decrease in lignin aliphatic and phenolic hydroxyl groups, β-O-aryl ether linkages, molecular weights, and viscosity values. Lignin under air cooling generates more oxygenated and condensed compounds, but lower amounts of ether linkages than lignin cooled under nitrogen. Lignin with a lower syringyl/guaiacyl ratio tends to form more cross-linkages along with higher viscosity values, higher molecular weight and larger amounts of condensed bonds.

AB - Lignins from various poplar genotypes were isolated by using organosolv fractionation and subjected to rheological treatment at various temperatures. Physicochemical characterization of the lignin variants shows a broad distribution of glass transition temperatures, melt viscosity, and pyrolysis char residues. Rheological treatment at 170 °C induces lignin repolymerization accompanied with an increase in condensed linkages, molecular weights, and viscosities. In contrast, rheology testing at 190 °C results in the decrease in lignin aliphatic and phenolic hydroxyl groups, β-O-aryl ether linkages, molecular weights, and viscosity values. Lignin under air cooling generates more oxygenated and condensed compounds, but lower amounts of ether linkages than lignin cooled under nitrogen. Lignin with a lower syringyl/guaiacyl ratio tends to form more cross-linkages along with higher viscosity values, higher molecular weight and larger amounts of condensed bonds.

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VL - 18

SP - 5015

EP - 5024

JO - Green Chemistry

JF - Green Chemistry

IS - 18

ER -

A study of poplar organosolv lignin after melt rheology treatment as carbon fiber precursors

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