Table 3.
Melting temperatures from the first (TmI) and second heating (TmII,1,2 corresponding to the double peak) cycles and crystallization temperatures (Tc), together with the corresponding enthalpies (ΔHmI, ΔHmII,1, ΔHmII,2, and ΔHc) and degree of crystallinity (Xc).
| PHBV Compounds | TmI °C |
ΔHmI J/g |
TmII,1 °C |
TmII,2 °C |
ΔHmII,1 J/g |
ΔHmII,2 J/g |
Tc °C |
ΔHc J/g |
Xc % |
|---|---|---|---|---|---|---|---|---|---|
| PHBV | 155.6 | 58.9 | 145.3 | 155.8 | 40.6 | 14.8 | 100.0 | 50.6 | 56.5 |
| PHBV-E | 158.1 | 54.5 | 140.1 | 151.7 | 33.2 | 21.0 | 98.9 | 50.5 | 57.1 |
| PHBV/BC | 156.1 | 61.2 | 147.3 | 157.3 | 44.6 | 14.0 | 101.8 | 53.8 | 61.1 |
| PHBV/BC-E | 157.6 | 49.4 | 141.3 | 152.8 | 33.7 | 20.5 | 98.8 | 50.5 | 58.5 |