Characteristic properties of organosolv lignin/polylactide copolymers

Stephanie B. Harris; Ulrike W. Tschirner; Nathan Lemke; Jorgen L. van Lierop

doi:10.1080/02773813.2016.1272124

Characteristic properties of organosolv lignin/polylactide copolymers

Stephanie B. Harris, Ulrike W. Tschirner, Nathan Lemke, Jorgen L. van Lierop

Bioproducts and Biosystems Engineering

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

9 Scopus citations

Abstract

A polylactide (PLA)/switchgrass organosolv lignin graft copolymer was synthesized via ring-opening polymerization. The resulting copolymer was characterized by size exclusion chromatography (SEC), differential scanning calorimetry, tensile testing, and hydrogen nuclear magnetic resonance spectroscopy. Phenolic hydroxyl content, percent lignin retained, and ultraviolet (UV) light transmission were investigated by UV light spectroscopy. Hydrolytic degradation and water vapor transmission rates were also investigated.It was found that the addition of organosolv switchgrass lignin to the polymer slowed the rate of degradation and water vapor transmission rate of the copolymer compared to the PLA homopolymer at varying temperatures. UV light transmission was also reduced with the addition of lignin.

Original language	English (US)
Pages (from-to)	211-224
Number of pages	14
Journal	Journal of Wood Chemistry and Technology
Volume	37
Issue number	3
DOIs	https://doi.org/10.1080/02773813.2016.1272124
State	Published - May 4 2017

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Publisher Copyright:
© 2017, Copyright © Taylor & Francis Group, LLC.

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

Keywords

Compostable polymer
lignin/lactide copolymer
polymer degradation
switchgrass lignin
water vapor transmission rate

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title = "Characteristic properties of organosolv lignin/polylactide copolymers",

abstract = "A polylactide (PLA)/switchgrass organosolv lignin graft copolymer was synthesized via ring-opening polymerization. The resulting copolymer was characterized by size exclusion chromatography (SEC), differential scanning calorimetry, tensile testing, and hydrogen nuclear magnetic resonance spectroscopy. Phenolic hydroxyl content, percent lignin retained, and ultraviolet (UV) light transmission were investigated by UV light spectroscopy. Hydrolytic degradation and water vapor transmission rates were also investigated.It was found that the addition of organosolv switchgrass lignin to the polymer slowed the rate of degradation and water vapor transmission rate of the copolymer compared to the PLA homopolymer at varying temperatures. UV light transmission was also reduced with the addition of lignin.",

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AU - Harris, Stephanie B.

AU - Tschirner, Ulrike W.

AU - Lemke, Nathan

AU - van Lierop, Jorgen L.

PY - 2017/5/4

Y1 - 2017/5/4

N2 - A polylactide (PLA)/switchgrass organosolv lignin graft copolymer was synthesized via ring-opening polymerization. The resulting copolymer was characterized by size exclusion chromatography (SEC), differential scanning calorimetry, tensile testing, and hydrogen nuclear magnetic resonance spectroscopy. Phenolic hydroxyl content, percent lignin retained, and ultraviolet (UV) light transmission were investigated by UV light spectroscopy. Hydrolytic degradation and water vapor transmission rates were also investigated.It was found that the addition of organosolv switchgrass lignin to the polymer slowed the rate of degradation and water vapor transmission rate of the copolymer compared to the PLA homopolymer at varying temperatures. UV light transmission was also reduced with the addition of lignin.

AB - A polylactide (PLA)/switchgrass organosolv lignin graft copolymer was synthesized via ring-opening polymerization. The resulting copolymer was characterized by size exclusion chromatography (SEC), differential scanning calorimetry, tensile testing, and hydrogen nuclear magnetic resonance spectroscopy. Phenolic hydroxyl content, percent lignin retained, and ultraviolet (UV) light transmission were investigated by UV light spectroscopy. Hydrolytic degradation and water vapor transmission rates were also investigated.It was found that the addition of organosolv switchgrass lignin to the polymer slowed the rate of degradation and water vapor transmission rate of the copolymer compared to the PLA homopolymer at varying temperatures. UV light transmission was also reduced with the addition of lignin.

KW - Compostable polymer

KW - lignin/lactide copolymer

KW - polymer degradation

KW - switchgrass lignin

KW - water vapor transmission rate

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Characteristic properties of organosolv lignin/polylactide copolymers

Abstract

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