Table 2.
Thermal values from unfilled blend systems before and after composting.
| Tg,PLA [°C] |
Tcc,PBS/ Tcc,PBAT [°C] |
ΔHcc,PBS/ ΔHcc,PBAT [J/g] |
Tcc,PLA [°C] |
ΔHcc,PLA [J/g] |
Tm,PBS/ Tm,PBAT [°C] |
ΔHm,PBS/ ΔHm,PBAT [J/g] |
Tm,PLA
[°C] |
ΔHm,PLA [J/g] |
|
|---|---|---|---|---|---|---|---|---|---|
| R01_w0 | 58.6 | 95.0 | −17.04 | 154.9 | 2.6 | 116.8 | 21.9 | 170.7 | 31.6 |
| R01_w12 | 6.5 | 72.7; 81.2 * | −33.54 | n.d. | n.d. | 102.4 | 17.0 | 138.0 | 20.4 |
| R02_w0 | 59.2 | 103.6 | −8.14 | 154.7 | -1.5 | 117.1 | 50.9 | 169.9 | 13.3 |
| R02_w12 | n.d. | 90.3 | −6.14 | n.d. | n.d. | 111.4 | 59.3 | 137.6 | 4.8 |
| R03_w0 | 61.4 | 99.9 | −17.73 | 156.7 | −2.1 | n.d. | n.d. | 171.2 | 27.7 |
| R03_w12 | 42.2 | 84.3 | −11.82 | n.d. | n.d. | n.d. | n.d. | 145.9 | 31.6 |
*: bimodal curve; w0: before composting period; w12: after 12-week composting period; n.d.: not detected. Compositions: R01: PLA/PBS (7:3); R02: PLA/PBS (3:7); R03: PLA/PBAT (7:3).