Fractionation of Organosolv Lignin Using Acetone:Water and Properties of the Obtained Fractions

Hasan Sadeghifar; Tyrone Wells; Rosemary Khuu Le; Fatemeh Sadeghifar; Joshua S. Yuan; Arthur Jonas Ragauskas

doi:10.1021/acssuschemeng.6b01955

Fractionation of Organosolv Lignin Using Acetone:Water and Properties of the Obtained Fractions

Hasan Sadeghifar, Tyrone Wells, Rosemary Khuu Le, Fatemeh Sadeghifar, Joshua S. Yuan, Arthur Jonas Ragauskas

Research output: Contribution to journal › Article › peer-review

148 Scopus citations

Abstract

Lignin fractions with different molecular weight were prepared using a simple and almost green method from switchgrass and pine organosolv lignin. Different proportions of acetone in water, ranging from 30 to 60%, were used for lignin fractionation. A higher concentration of acetone dissolved higher molecular weight fractions of the lignin. Fractionated organosolv lignin showed different molecular weight and functional groups. Higher molecular weight fractions exhibited more aliphatic and less phenolic OH than lower molecular weight fractions. Lower molecular weight fractions lead to more homogeneous structure compared to samples with a higher molecular weight. All fractions showed strong antioxidant activity.

Original language	English
Pages (from-to)	580-587
Number of pages	8
Journal	ACS Sustainable Chemistry and Engineering
Volume	5
Issue number	1
DOIs	https://doi.org/10.1021/acssuschemeng.6b01955
State	Published - Jan 3 2017

Keywords

Acetone:water mixture
Antioxidant activity
Lignin fractionation
Molecular weight
Organosolv lignin

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10.1021/acssuschemeng.6b01955

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abstract = "Lignin fractions with different molecular weight were prepared using a simple and almost green method from switchgrass and pine organosolv lignin. Different proportions of acetone in water, ranging from 30 to 60%, were used for lignin fractionation. A higher concentration of acetone dissolved higher molecular weight fractions of the lignin. Fractionated organosolv lignin showed different molecular weight and functional groups. Higher molecular weight fractions exhibited more aliphatic and less phenolic OH than lower molecular weight fractions. Lower molecular weight fractions lead to more homogeneous structure compared to samples with a higher molecular weight. All fractions showed strong antioxidant activity.",

keywords = "Acetone:water mixture, Antioxidant activity, Lignin fractionation, Molecular weight, Organosolv lignin",

author = "Hasan Sadeghifar and Tyrone Wells and Le, {Rosemary Khuu} and Fatemeh Sadeghifar and Yuan, {Joshua S.} and {Jonas Ragauskas}, Arthur",

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AU - Le, Rosemary Khuu

AU - Sadeghifar, Fatemeh

AU - Yuan, Joshua S.

AU - Jonas Ragauskas, Arthur

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AB - Lignin fractions with different molecular weight were prepared using a simple and almost green method from switchgrass and pine organosolv lignin. Different proportions of acetone in water, ranging from 30 to 60%, were used for lignin fractionation. A higher concentration of acetone dissolved higher molecular weight fractions of the lignin. Fractionated organosolv lignin showed different molecular weight and functional groups. Higher molecular weight fractions exhibited more aliphatic and less phenolic OH than lower molecular weight fractions. Lower molecular weight fractions lead to more homogeneous structure compared to samples with a higher molecular weight. All fractions showed strong antioxidant activity.

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KW - Antioxidant activity

KW - Lignin fractionation

KW - Molecular weight

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Fractionation of Organosolv Lignin Using Acetone:Water and Properties of the Obtained Fractions

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