Effect of a solvent-free acetylation on wettability and thermal stability of lignocellulosic fibers

Effect of a solvent-free acetylation on wettability and thermal stability of lignocellulosic fibers

Meriem El BoustaniFrançois Brouillette Gilbert Lebrun Ahmed Belfkira 

Laboratoire de Chimie Bioorganique et Macromoléculaire (LCBM) Université Caddi Ayyad, Faculté des Sciences et Techniques Av. Abdelkarim Elkhattabi, B.P 549 Marrakech, Maroc

Centre de Recherche sur les Matériaux Lignocellulosiques (CRML) Université du Québec à Trois-Rivières P.O. Box 500, Trois-Rivières, QC G9A 5H7 Canada

Laboratoire de Mécanique et Eco-matériaux (LMEM) Université du Québec à Trois-Rivières P.O. Box 500, Trois-Rivières, QC G9A 5H7 Canada

Corresponding Author Email: 
Meriem.El.Boustani@uqtr.ca
Page: 
331-347
|
DOI: 
https://doi.org/10.3166/RCMA.26.331-347
Received: 
N/A
|
Accepted: 
N/A
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Published: 
31 December 2016
| Citation
Abstract: 

Acetylation is one of the most widespread chemical treatments to improve the affinity of lignocellulosic fibers with polymeric matrices for the elaboration of several types of composites. In this study, the acetylation of flax and wood pulp (bleached softwood kraft pulp and thermomechanical pulp) fibers was carried out in conditions that respect the environment and are suitable for industrial use. The thermal stability of acetylated fibers was evaluated. The evolution of the hydrophobic/hydrophilic character of fibers was determined by contact angle measurements. The wettability of fibers by liquid epoxy resin was also evaluated to confirm the improvement of the affinity of acetylated fibers with the epoxy matrix. It was found that the hydrophilic character of fibers decreases with increasing reaction time, whereas the trend was less pronounced beyond specific reaction times. Acetylated fibers can therefore be potential candidates for replacing non-biodegradable reinforcing materials in composite applications. 

Keywords: 

lignocellulosic fibers, chemical treatment, compatibilization, wettability, thermal stability.

Extended abstract
1. Introduction
2. Matériaux et procédures expérimentales
3. Résultats et discussion
4. Conclusion
Remerciements

Les auteurs tiennent à remercier le Conseil de Recherche en Sciences Naturelles et en Génie du Canada (CRSNG) pour son appui financier.

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