Thermo-responsive polymers based on source-selective lignins

Ngoc A. Nguyen; Kelly M. Meek; Sietske H. Barnes; Amit K. Naskar

Thermo-responsive polymers based on source-selective lignins

Ngoc A. Nguyen, Kelly M. Meek, Sietske H. Barnes, Amit K. Naskar

Research output: Contribution to conference › Paper › peer-review

Abstract

In this study, thermomechanical properties of hardwood and softwood lignin-nitrile butadiene rubber composites were controlled by a thermal annealing process. The presence of thermally unstable linkages within the selected lignins provides free radical sources for crosslinking reactions. The measured dynamic mechanical properties demonstrated substantial improvement in glass transition temperatures (Tg) and storage moduli (E') of 50 wt. % softwood lignin-And 50 wt. % hardwood lignin-rubber composites after thermal annealing at 180°C. An increase in Tg of approximately 18°C and more than 230% increasing E' was achieved after annealing the 50 wt. % hardwood lignin-rubber for 5 h. The chemical crosslinking reactions between lignin-nitrile butadiene rubber and lignin-lignin were characterized by in-situ dynamic mechanical analysis and Fourier transform infrared (FTIR) spectroscopy. A mechanism of crosslinking reactions was revealed.

Original language	English (US)
State	Published - 2017
Externally published	Yes
Event	4th Annual Composites and Advanced Materials Expo, CAMX 2017 - Orlando, United States Duration: Dec 11 2017 → Dec 14 2017

Conference

Conference	4th Annual Composites and Advanced Materials Expo, CAMX 2017
Country/Territory	United States
City	Orlando
Period	12/11/17 → 12/14/17

ASJC Scopus subject areas

Mechanics of Materials
General Materials Science
Industrial and Manufacturing Engineering
Aerospace Engineering
Renewable Energy, Sustainability and the Environment

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title = "Thermo-responsive polymers based on source-selective lignins",

abstract = "In this study, thermomechanical properties of hardwood and softwood lignin-nitrile butadiene rubber composites were controlled by a thermal annealing process. The presence of thermally unstable linkages within the selected lignins provides free radical sources for crosslinking reactions. The measured dynamic mechanical properties demonstrated substantial improvement in glass transition temperatures (Tg) and storage moduli (E') of 50 wt. % softwood lignin-And 50 wt. % hardwood lignin-rubber composites after thermal annealing at 180°C. An increase in Tg of approximately 18°C and more than 230% increasing E' was achieved after annealing the 50 wt. % hardwood lignin-rubber for 5 h. The chemical crosslinking reactions between lignin-nitrile butadiene rubber and lignin-lignin were characterized by in-situ dynamic mechanical analysis and Fourier transform infrared (FTIR) spectroscopy. A mechanism of crosslinking reactions was revealed.",

author = "Nguyen, {Ngoc A.} and Meek, {Kelly M.} and Barnes, {Sietske H.} and Naskar, {Amit K.}",

note = "Funding Information: This research at Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under contract DE-AC05-00OR22725, was sponsored by the Office of Energy Efficiency and Renewable Energy (EERE) BioEnergy Technologies Office (BETO) Program. Funding Information: This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). Publisher Copyright: {\textcopyright} 2017 The Composites and Advanced Materials Expo (CAMX). All rights reserved.; 4th Annual Composites and Advanced Materials Expo, CAMX 2017 ; Conference date: 11-12-2017 Through 14-12-2017",

year = "2017",

language = "English (US)",

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TY - CONF

T1 - Thermo-responsive polymers based on source-selective lignins

AU - Nguyen, Ngoc A.

AU - Meek, Kelly M.

AU - Barnes, Sietske H.

AU - Naskar, Amit K.

N1 - Funding Information: This research at Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under contract DE-AC05-00OR22725, was sponsored by the Office of Energy Efficiency and Renewable Energy (EERE) BioEnergy Technologies Office (BETO) Program. Funding Information: This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). Publisher Copyright: © 2017 The Composites and Advanced Materials Expo (CAMX). All rights reserved.

PY - 2017

Y1 - 2017

N2 - In this study, thermomechanical properties of hardwood and softwood lignin-nitrile butadiene rubber composites were controlled by a thermal annealing process. The presence of thermally unstable linkages within the selected lignins provides free radical sources for crosslinking reactions. The measured dynamic mechanical properties demonstrated substantial improvement in glass transition temperatures (Tg) and storage moduli (E') of 50 wt. % softwood lignin-And 50 wt. % hardwood lignin-rubber composites after thermal annealing at 180°C. An increase in Tg of approximately 18°C and more than 230% increasing E' was achieved after annealing the 50 wt. % hardwood lignin-rubber for 5 h. The chemical crosslinking reactions between lignin-nitrile butadiene rubber and lignin-lignin were characterized by in-situ dynamic mechanical analysis and Fourier transform infrared (FTIR) spectroscopy. A mechanism of crosslinking reactions was revealed.

AB - In this study, thermomechanical properties of hardwood and softwood lignin-nitrile butadiene rubber composites were controlled by a thermal annealing process. The presence of thermally unstable linkages within the selected lignins provides free radical sources for crosslinking reactions. The measured dynamic mechanical properties demonstrated substantial improvement in glass transition temperatures (Tg) and storage moduli (E') of 50 wt. % softwood lignin-And 50 wt. % hardwood lignin-rubber composites after thermal annealing at 180°C. An increase in Tg of approximately 18°C and more than 230% increasing E' was achieved after annealing the 50 wt. % hardwood lignin-rubber for 5 h. The chemical crosslinking reactions between lignin-nitrile butadiene rubber and lignin-lignin were characterized by in-situ dynamic mechanical analysis and Fourier transform infrared (FTIR) spectroscopy. A mechanism of crosslinking reactions was revealed.

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M3 - Paper

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T2 - 4th Annual Composites and Advanced Materials Expo, CAMX 2017

Y2 - 11 December 2017 through 14 December 2017

ER -

Thermo-responsive polymers based on source-selective lignins

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