Synthesis of sodium lignosulfonate from lignin extracted from oil palm empty fruit bunches by acid/alkaline treatment for reinforcement in natural rubber composites
Conference proceedings article
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Publication Details
Author list: Thungphotrakul N., Dittanet P., Loykulnunt S., Tanpichai S., Parpainainar P.
Publisher: IOP Publishing
Publication year: 2019
Volume number: 526
Issue number: 1
ISSN: 1757-8981
eISSN: 1757-899X
Languages: English-Great Britain (EN-GB)
Abstract
This work studied a synthesis of sodium lignosulfonate (SLS) from the lignin which extracted from oil palm empty fruit bunches (OPEFB) by using batch method. The preparation of lignin from OPEFB was done by acid pretreatment using 1% (wt/wt) H2SO4 at 90 ฐC for 120 min in order to reduce hemicelluloses. Then lignin was extracted by 2.5% (wt/wt) NaOH at 90 ฐC for 180 min and precipitated by adjusting pH to 2 with 98% H2SO4. The obtained lignin was changed to SLS by using sodium bisulfite (NaHSO3). The study yields of prepared SLS conducted by varying concentration of NaHSO3. The obtained SLS was characterized by Fourier transform infrared spectroscopy and zeta potential compared to sodium lignosulfonate (commercial). ฉ Published under licence by IOP Publishing Ltd.
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