Lignin is mainly made from coniferyl alcohol, p-coumaryl alcohol, and sinapyl alcohol. Lignins fill the place between the cell membranes of ligneous plants and convert them into wood, thereby resulting in a mixed body of pressure-resistant lignin and cellulose possessing good tensile strength.
What is the source of lignin?
The pulp mill is the main commercial source of lignin. The pulping processes are used to individualize the wood fibers in an extraction processes that depending on the technology applied, may occur in acid, alkaline media or using organic solvents.
Is lignin man made?
The bonding and stiffening attributes of the different forms of isolated lignins have been harnessed in man-made polymeric materials for many decades with varying success.