et al.[13]investigated the transesterification process by analyzing
the molecular weight of the polyesters by SEC and the amount of
PLA-g-PBAT copolymer formed after 40 min of blending was estimated to be about 0.65% by weight of the blend, which was enough
to improve the compatibility of the modified PLA/PBAT blend. Because of the compatibility with both PLA and PBAT, the PLA-g-PBAT
copolymers carrying neighboring PBAT chains diffused into the PLA
matrix. The PLA and PBAT chains thus become entangled within
the binary phase zone