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Polymers 2016, 8(6), 205; doi:10.3390/polym8060205

Carbon Microparticles from Organosolv Lignin as Filler for Conducting Poly(Lactic Acid)

1
BOKU-University of Natural Resources and Life Science Vienna, Konrad Lorenz Strasse 24, A-3430 Tulln, Austria
2
Kompetenzzentrum Holz GmbH, Altenbergerstrasse 89, A-4020 Linz, Austria
3
BOKU-University of Natural Resources and Life Science Vienna, Peter Jordan Strasse 82, A-1190 Vienna, Austria
4
Department Materials Physics, University of Leoben, Jahnstrasse 12, A-8700 Leoben, Austria
*
Author to whom correspondence should be addressed.
Academic Editors: Hyeonseok Yoon and Changsik Song
Received: 4 April 2016 / Revised: 18 May 2016 / Accepted: 20 May 2016 / Published: 26 May 2016
(This article belongs to the Special Issue Conductive Polymers 2016)
View Full-Text   |   Download PDF [3500 KB, uploaded 26 May 2016]   |  

Abstract

Carbon microparticles were produced from organosolv lignin at 2000 °C under argon atmosphere following oxidative thermostabilisation at 250 °C. Scanning electron microscopy, X-ray diffraction, small-angle X-ray scattering, and electro-conductivity measurements revealed that the obtained particles were electrically conductive and were composed of large graphitic domains. Poly(lactic acid) filled with various amounts of lignin-derived microparticles showed higher tensile stiffness increasing with particle load, whereas strength and extensibility decreased. Electric conductivity was measured at filler loads equal to and greater than 25% w/w. View Full-Text
Keywords: lignin; carbon; carbonisation; electric conductivity; SAXS; filled polymers; tensile testing lignin; carbon; carbonisation; electric conductivity; SAXS; filled polymers; tensile testing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Köhnke, J.; Fürst, C.; Unterweger, C.; Rennhofer, H.; Lichtenegger, H.C.; Keckes, J.; Emsenhuber, G.; Mahendran, A.R.; Liebner, F.; Gindl-Altmutter, W. Carbon Microparticles from Organosolv Lignin as Filler for Conducting Poly(Lactic Acid). Polymers 2016, 8, 205.

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