Tensile strength and modulus of the
blends decreased with PBS content but followed approximately the mixing rule for 90/10 and 80/20
(PLA/PBS) blends. It is concluded that percentage elongation at break remains almost constant for all
the blends. Modulated DSC showed that the composition beyond 20 wt% PBS has two distinct melting
peaks indicating incompatibility of the two polymers. However, compositions 90/10, 80/20
(PLA/PBS) seem to be compatible.