Table 1.
Summary of mechanical properties achieved for Wood-PHA (polyhydroxyalkanoate) Composites, currently being developed, compared to commercial Wood Plastic Composites (WPC) products based on polypropylene (PP) and polylactic acid (PLA).
| Tensile Strength 1 (MPa) | Tensile Modulus 1 (GPa) | Strain at Failure 1 (%) | Impact Strength 2 (kJ/m2) | |
|---|---|---|---|---|
| Pure PHA: Commercially available | ||||
| PHBV ENMATTM Y1000 (2% HV content) | 30 | 2.8 | 8.0 | - |
| WPCs: In development | ||||
| Wood-PHA Composites (PHBV + 50% wood content) |
27 | 6.1 | 1.0 | 4.0 |
| WPCs: Commercially available | ||||
| FKUR—Fibrolon® P7550 (PP + 50% wood content) |
22 | 3.3 | 3.0 | 7.9 |
| FKUR—Fibrolon® F8530 (PLA + 50% wood content) |
34 | 3.8 | 3.8 | 11.7 |
| Jeluplast—PP H50-500-14 (PP + 50% wood content) |
32 | 4.5 | 1.9 | 10.6 |
1 Tested according to ASTM D638 for Wood-PHA Composites and ISO 527-2 for commercial products. 2 Tested through standardised Charpy Test according to ISO 179-1/1eU.