Starch has the advantage of being biodegradable and agriculture based renewable resource that can be converted into a thermoplastic material with or without any additive. Lignin and its derivatives are good candidates for reducing the water sensitivity of starch based materials. Electron beam radiation has been proposed as an efficient method for modifying the starch lignin blends and creating covalent linkages between the two constituents for improved blend stability. The blends were analyzed using SEC, NMR, and MALDI-TOF for placing in evidence the phenomenon of radiation-induced grafting...