Lign-X—A Biomimetic Solution to Plastic

Lignin is an energy dense polymer that forms the secondary layer within a plants cell wall. Within the cell wall, lignin acts as a matrix material, providing structural integrity to the plant. This polymer is often a byproduct from harvesting cellulose and has traditionally been used in resins, insulation, and adhesives. Recent research has indicated that lignin’s hierarchical structure may offer advantage in dissipating fracture energy while its fibrous composite arrangement prevents crack growth. Because of lignin’s unique chemical characteristics, different formulations and combinations with resins and bioplastics using lignin has started to make way for a new cost-effective and non-polluting alternative for the current petroleum-based plastics used globally. The goal of the following project was to develop a material that could show resilience in replacing the petroleum-based plastic used in small format items whilst also demonstrating high efficacy in biodegradation.