The influence of lignosulfonamides on the flammability and thermal properties of polylactide composites

The purpose of this study was to determine the quantitative and qualitative effects of the synthesized three lignin derivatives on the decomposition of PLA under different measurement conditions. The first step to achieve this goal was to understand the thermal and flammability properties of polylactide composites containing dibutyl-lignosulfonamide (DBA), N-butyl-N-dodecyl-lignosulfonamide (NNA), and didodecyl-lignosulfonamide (DDA). For this purpose, TGA, DSC, and MCC analyses were performed, not only on the individual raw materials, but also on PLA/DBA, PLA/NNA, and PLA/DDA composites with 3, 6, and 9 wt% filler content. The results of these analyses showed that lignosulfonamides can be an effective bioantipyrine, as they allow a 20-30% reduction in flammability compared to PLA.