Thermostructural evaluation of poly(butylene adipate-co-terephthalate) /molybdenum trioxide nanocomposites through time domain nuclear magnetic resonance and other conventional techniques / Avaliação termo-estrutural de nanocompósitos de poli(adipato-co-tereftalato de butileno) / trióxido de molibdénio através de ressonância magnética nuclear no domínio do tempo e outras técnicas convencionais

In present study, poly(butylene adipate-co-terephthalate) (PBAT) nanocomposites films were prepared by solvent casting technique, using chloroform (CHCl3) and containing different percentages (0-0.5 wt %) of molybdenum trioxide (MoO3) nanoparticles (NPs). The microstructure and molecular dynamics of the PBAT and PBAT/MoO3 films were characterized by X-ray diffraction (XRD) and time-domain nuclear magnetic resonance (TD-NMR). Films’ thermal degradation was studied by using thermogravimetric analysis (TGA). Fourier transform infrared spectroscopy (FTIR) confirmed: no residual solvent or contaminants and polymer matrix integrity after the casting process. The results' matchup indicated that filler–polymer interaction was suitable and, thus, MoO3NPs are potential candidates to be used as filler in PBAT matrices, especially in concentrations around 0.3 %.