Additionally, a test was carried out to determine the resistance of new materials to oxidation by determining the oxidation onset temperature (OOT). This allowed us to state that the composites are characterized by increased thermo-oxidative stability compared to pure PBS. between the filler and the polymeric matrix. Increased interactions between functional groups on the surface of the modified inorganic filler limit the mobility of polymer macromolecules in the interfacial region . Based on the DMTA results, two separate mechanisms can be supposed to be found among the analyzed materials. In the case of the PBS/M-P series, reduced values of both Tg-DMTA and E' were noted, which may be related to the more considerable amount of the non-bounded with MMT low-molecular weight modifier, which after being dispersed in polymeric matrix showed a partial compatibilizing effect on PBS. This phenomenon can be related to the highest content of terpene in the modifier (Table ). The remaining series were characterized by increased polymer-filler adhesion, further confirmed by the reduced tanδ value in the glass transition range compared to the PBS/M sample.