Effect of Alkalization on Mechanical Properties of Water Hyacinth Fibers-Unsaturated Polyester Composites

Potential of duckweed in the conversion of wastewater nutrients to valuable biomass: A pilot-scale comparison with water hyacinth

“…Moreover, the cellulose and lignin contents of water hyacinth (39.93% and 10.15%, respectively) were approximately 4 times higher than that of duckweed (9.25% and 3.84%, respectively) in summer, which greatly reduced the application potential of water hyacinth in animal food, fertilizer and bioenergy production. The higher cellulose content of water hyacinth has also been reported in previous studies (Abral et al, 2013;Methacanon et al, 2010).…”

“…Because water hyacinth requires abundant fiber (more than 70%, including cellulose, hemicellulose and lignin) to maintain its plant structure (Abral et al, 2013;Methacanon et al, 2010), high-starch does not accumulate in water hyacinth. By contrast, previous studies have indicated that duckweed showed huge potential in high-starch accumulation during nutrient starvation (Tao et al, 2013;Xiao et al, 2013).…”

Tensile properties of bacterial cellulose nanofibers - polyester composites

“…The decreasing may be due to the fact that the sample was so fast fractured due to many defects like porosities and micro crack in PO matrix occurring in manufacturing composites. Also, a bad interface bonding between BC sheet and PO matrix provided lowering of ME [7]. …”

Effect of Chemical Surface Modifications on the Properties of Alfa Fiber-Polyester Composites

“…For 12% NaOH-treated fiber composite, both the (FM) and (TM) decrease. The decrease in mechanical properties in the case of 12% alkali treated fiber composites may be due to cell wall thickening which leads to poor adhesion with polyester resin [24,28] . Figure 8 shows optical micrographs of the tensile fracture surfaces of untreated and alkali-treated Alfa composite.…”

“…BENYAHIA AND A. MERROUCHE the crystalline regions in such a way that the fiber exhibits a more crystalline nature. At higher concentrations the alkali treatment may degrade the crystalline regions of the fibers, which result in lower crystallinity index [27,28] . Figure 5 showed that the moisture absorption decreases for the 9% NaOH treated compared to untreated fibers.…”