Blends of Polylactide and Polyhydroxyalkanoates

In a similar study conducted by Ferreira et al. (2002), the tensile strength of blends of PLLA with different amounts of PHBV were lower than those achieved by lannace et al. (1994). This was because the PLLA film obtained in this study was porous, unlike that of lannace et al. (1994), who obtained only dense films. However, the study by Ferreira et al. (2002) 

Material Blend Components Tensile Young s Modulus (GPa) Elongation at Break (%) Impact Strength Reference 

PLLA Poly(butylene succinate-co- - - - - 1.16 154 - Chen and Yoon 

Takagi et al. (2004) prepared blends of PEA and a biodegradable thermoplastic known as poly(3-hydroxyalkanoate) (PHA) at different compositions. Together with PHA, PEA was also blended with functionalized PHA (ePHA), which contained 30% epoxy group in its side chains. They found that the Charpy impact strength for both blends of PEA increased with the composition of PHA or ePHA. These results were higher than for pure PEA. However, the tensile strength for both 

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