The blend melt-kneaded at 220 C was the highest
elongated sample. The blend melt-kneaded at a lower temperature
had a slightly lower elongated sample. It seemed that PBS and CAB
were hardly miscible at low temperature and might produce
a heterogeneous blended film. As mentioned about the molecular
weight, the PBS/CAB blends were decomposed at the higher
temperature, therefore, the tensile strength and strain at break
significantly decreased.