PBAT is classified as a random copolymer due to its random structure. This also means that it cannot crystallize to any significant degree due to the wide absence of any kind of structural order. This leads to several physical properties: wide melting point, low modulus and stiffness, but high flexibility and toughness. The flexibility and toughness of this polymer makes it ideal for blending with another biodegradable polymer that is strong and rigid for bottle production.[3]
The draw back to this polymer is the same as with any other. When it has high flexibility and toughness, then it will not be strong and rigid. This makes it non-ideal for any situation in which a strong, rigid container is desired. An example of this would be transparent barriers, such as plexiglass (Poly(methyl methacrylate)) used as a transparent glass substitute.[3]
PBAT has been proven to be fully biodegradable when composted, due to the containment of butylene adiapte groups. The high stability and mechanical properties are yielded from the terephthalate portions.