Table 3 Average water contact angles and surface energy of the analyzed PHAs films.
Carbon source | PHA composition | Water contact angle [°] | Surface energy [J/cm2] |
|---|---|---|---|
Acetic acid | P (99.2% HB-co-0.8% HV) | 29.5 ± 5.4 | 64.0 |
Propionic acid | P (93.6% HB-co-6.4% HV) | nd | nd |
Butyric acid | P (99.4% HB-co-0.6% HV) | 103.6 ± 0.8 | 20.4 |
Valeric acid | P (17.5% HB-co-82.5% HV) | 68.2 ± 1.3 | 42.2 |
Caproic acid | P (98.8% HB-co-1.2% HV) | 78.5 ± 1.3 | 35.9 |
5% CAs—rich stream | P (98.5% HB-co-1.5% HV) | 81.4 ± 0.4 | 34.1 |
10% CAs—rich stream | P (98.8% HB-co-1.2% HV) | 71.3 ± 1.1 | 40.3 |
15% CAs—rich stream | P (98.3% HB-co-1.7% HV) | 98.4 ± 1.1 | 26.6 |
20% CAs—rich stream | P (98.5% HB-co-1.5% HV) | 64.9 ± 1.7 | 44.2 |
25% CAs—rich stream | P (98.4% HB-co-1.6% HV) | 85.5 ± 0.8 | 31.5 |
30% CAs—rich stream | P (98.1% HB-co-1.9% HV) | 65.5 ± 2.4 | 43.9 |
