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LGP2, a center of innovative research
LGP2, a center of innovative research

> Research

Valuation of Tunisian cellulose waste

Published on October 6, 2015
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PhD Defense September 26, 2015

Fedia Bettaieb Ep Khiari, PhD student of LGP2, defended her thesis in September.

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This University of Grenoble doctoral thesis was prepared at the LGP2 laboratory under the supervision of the Professors Alain Dufresne and Naceur Belgacem (Grenoble INP-Pagora), and of Professor Mohamed Farouk Mhenni (University of Monastir, Tunisia).

Many cellulosic sources are available in Tunisia in large quantities such as agricultural waste (vine stems) and marine residues (Posidonia oceanica leaves and balls). Their valorization presents an interesting activity to produce new products and bio-based biomass materials.

The present work deals with the preparation, characterization and application of nanocellulose. In fact, different qualities of nanocellulose, namely cellulose nanocrystals (CNC) and cellulose nanofibrils (CNF) were produced and characterized by various methods. The objective was to better understand the structure and morphology of the nanofibers obtained from both plants. Finally, various nanocomposites were prepared using the cellulose nanocrystals and cellulose nanofibrils as reinforcing element in polyacrylate polymer as matrix.

The obtained results were compared with those reported for other sources such as annual plants and wood. It has been shown that nanocellulose from Posidonia oceanica and vine stem can be used as a new alternative nanoreinforcing source in nanocomposite applications.

Ph.D. thesis of the LGP2 (2015)

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Date of update October 6, 2015

Grenoble INP Institut d'ingénierie Univ. Grenoble Alpes