SYNTHESIS OF LIGNIN NANOPARTICLES FROM LOCAL WOOD WASTE

Author (s) : J.Udyaseelan & M.Shanmugam, P.Sivakumar & M.Ramya

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Abstract :
Lignin is the most abundant aromatic natural polymer and comprises about 25% of woody biomass. It has a highly cross-linked, three-dimensional structure composed of three types of substituted phenols; coniferyl, sinapyl and p-coumaryl alcohol. Lignin can easily be extracted from wood waste by treating with acid or base. In this study, lignin was extracted from saw dust by heating with a mixture of formic and acetic acids or refluxing in sulfuric acid. The yield and the composition varied depending on the extraction method. Lignin particles were synthesized either by sonication of an aqueous suspension of lignin or by dialyses of lignin dissolved in tetrahydrofuran (THF) against distilled m whereas dialysis yielded particles with sizes rangingmwater. Sonication yielded particles around 10  m depending on the amount of lignin dissolved in THF. Thus obtained particlesmfrom 400 nm to 1  were characterized using SEM, FTIR and XRD. Upon further optimization of synthesis and controlling the particle size, lignin nanoparticles can be used in many applications as a low cost alternative for other carbon-based nanomaterials.

Keywords : Lignin, Saw dust, SEM, FTIR, XRD

Conference Date : 17/09/2021

Pages : 278

Paper ID : IESMDT276