Publications by authors named "Y Hamzeh"
Article Synopsis
- This research presents a new upcycling method that converts used cigarette filters, a common environmental problem, into high-performance epoxy composites reinforced with cellulose nanofibers.
- The process involves extracting cellulose acetate nanofibers from cigarette butts, purifying them, and converting them into regenerated cellulose nanofibers, allowing the creation of four different composite types.
- The resulting composites demonstrated significantly improved tensile strength compared to traditional materials, thanks to better nanofiber distribution and bonding, while also maintaining thermal stability and increased optical transparency.
This work focuses on the influence of ozone pretreatment on the fractionation and solubilization of sugarcane bagasse and soda bagasse pulp fibers in sodium hydroxide/urea solution, as well as the application of regenerated cellulose for producing edible films. The methodology involved pretreating lignocelluloses with ozone for 20 to 120 min before dissolving in sodium hydroxide/urea solution. The influence of the pretreatment conditions on cellulose dissolution yield was investigated.
View Article and Find Full Text PDFThe aim of this study was to investigate the effect of different types of nanocellulose, i.e., cellulose nanocrystal (CNC), cellulose nanofiber (CNF) and bacterial nanocellulose (BNC), and also different drying methods (oven-drying and freeze-drying) on the properties of acrylic acid (AA)/sodium alginate (SA) super absorbent polymers (SAPs).
View Article and Find Full Text PDFIn this study, hydrogels based on gelatin and lignin were fabricated as efficient drug carriers for Ribavirin. The obtained hydrogels were characterized by scanning electron microscopy (SEM), ATR-FTIR spectroscopy, differential scanning calorimetry (DSC), mechanical compression and rheometry. Results showed that the pore structure, viscoelastic behavior and swelling ability significantly influenced by varying lignin content and crosslinker ratio.
View Article and Find Full Text PDFImproving bagasse pulp and paper properties using forest-byproduct biomass, native Acorn starch (NAS), was compared with conventional wet-end additive cationic corn starch (CCS). The extracted acorn starch was characterized by SEM, XRD, and GPC. The results clearly showed irregular granular shape (6-12 μm) with rough surfaces, C-type XRD pattern, and 436.
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