“…While Ag-Cu nanoparticles (NP) were added to the PLA/PEG blend, the elastic modulus, G and the viscous modulus, G dropped significantly, and it indicates that the metallic NPs acted as a catalyst for the degradation of the blend above the melting temperature. Degradation of PLA in the presence of nanoparticles has been evident in the literature, and even it is recommended the use of silane-treated metallic oxide surface to prevent the degradation (Arfat, Ahmed, Al Hazza, Jacob, & Joseph, 2017). Mostly, it has found that at a higher filler concentration, G does not depend on the frequency at low frequencies, which could indicate a solid-like behavior (Bhatia, Gupta, Bhattacharya, & Choi, 2009).…”