Electrically conductive kraft lignin-based carbon filler for polymers
作者： Wolfgang Gindl-Altmutter , Christian Fürst , Arunjunai raj Mahendran , Michael Obersriebnig , Gerhard Emsenhuber
DOI: 10.1016/J.CARBON.2015.03.042
关键词:
摘要: Abstract Commercial kraft lignin was thermostabilised by heating up to 250 °C at a rate of 0.01 °C min −1 in ambient atmosphere. Subsequent carbonisation 2000 °C argon atmosphere yielded carbon microparticles containing ordered graphitic domains. Micromechanical characterisation nanoindentation average values 1.39 GPa for hardness and 8.2 GPa the indentation modulus particles. Composite films polycaprolactone with different content were prepared means solvent evaporation casting. Tensile testing revealed an increase composite stiffness while strength elongation break decreased loaded amount microparticles. Electrical conductivity composites exemplarily observed microparticle loading 15% (w/w). Using film as strain sensor three-point bending, high sensitivity electrical towards applied observed.
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