Synthesis and Characterization of a Novel Lignin-Based Biopolymer from Ulex europaeus: A Preliminary Study

Invasive plant species are a global environmental threat since they affect native and can modify ecosystems, which negatively impacts human health world economics. The aim of this preliminary study was to synthesize characterize new lignin-based biopolymer from gorse (Ulex europaeus), globally widespread invasive plant. lignin extraction carried out through base/acid solvent-based methodologies compare the reaction yield. Subsequent polymerization extracted performed by glycine condensation in 70% 1,4-dioxane solution with H2O2 CaCl2 as catalysts. products were characterized Fourier-transform infrared spectroscopy. Thermal stability properties determined thermogravimetric analysis, differential scanning calorimetry, soil burial test. alkaline process resulted higher yield than using an organic solvent. In comparison lignin, novel showed different absorption bands that characteristic tensions flexions alkenes, amine, amide groups. Additionally, thermal revealed peaks corresponding decomposition dehydration reactions, endothermic processes glass transition temperature ≈259 °C. Potential biodegradation observed. A polymeric, possibly cross-linked, thermally stable material potentially high degree crystallinity synthesized renewable raw material, might contribute management according concept ecosystem, well reduction contamination other polymeric materials.