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- Title
Recovery of Residues from Olive Industry: Characterization of Simple and Acetylated Lignin.
- Authors
Abid, Amine; El Bouhtoury, Fatima Charrier; Gabsi, Slimane
- Abstract
Lignin is a renewable material obtained in large quantities as a by-product of the olive industry. In this context, this study aims to examine lignin as macro-monomers in the synthesis of rigid polyurethane foam after chemical modification. Indeed, the lignin extracted from the olive residue is used by chemical treatment according to the organosolv process. Comparison by characterization of the single isolated lignin and the acetylated lignin according to the physicochemical analysisTGA, DSC, FTIR, C-13 NMR, 1-H NMR, and molar mass distribution (sec) shows its value as biomass capable of being transformed into polyol afterchemical modification. acetylation increases the weight and the number of molar masses by 25-50% was also determined. Acetylation has a greater effect on the short chains which are probably richer in free phenolic groups. Mass distribution analyzes reveal a relatively high molar mass in organosolv lignin moreover, polydispersity values are very high (20 >> 1). The characterization of spent olive cake reflects the interest of using this biomass as a source of renewable energy for the production of industrial polymers.
- Subjects
OLIVE industry; LIGNINS; LIGNIN structure; RENEWABLE energy sources; MOLAR mass; URETHANE foam; FREE groups
- Publication
Annales de Chimie Science des Matériaux, 2020, Vol 44, Issue 5, p327
- ISSN
0151-9107
- Publication type
Article
- DOI
10.18280/acsm.440504