PLASTICIZABLE POLYMER MATERIAL BASED ON THE NATURAL POLYMERS POLYLACTIDE AND/OR LIGNIN

摘要

A plasticizable polymer material processible by means of thermoplastic processing methods is proposed, this comprising a proportion of at least one natural polymer from the group of polylactide and lignin, including mixtures and/or derivatives thereof. In order to improve the material properties, such as more particularly the impact resistance, of the polymer material, the invention envisages that it further comprises a proportion of at least one polyamide based on dimer fatty acid. The invention further relates to a polymer molding produced from such a polymer material and a process for production thereof, by introducing a natural polymer of the aforementioned type with polyamides based on dimer fatty acid, optionally with addition of fine particulate solids and/or of reinforcing fibers, especially natural reinforcing fibers, into an extruder, plasticizing and homogenizing in the extruder and then discharging from the extruder and cooling, and pelletization is a particular possibility. The polymer material may especially be in the form of a thermoplastic elastomer material which comprises rubber dispersed into the thermoplastic phase, and this may be at least partly crosslinked.