Table 2.
Thermal properties of PLA-based developed films.
Films | Tdeg. | Tg (°C) | Tcc (°C) | ΔHcc (J/g) | Tm (°C) | ΔHm(J/g) | Xc′ (%) |
---|---|---|---|---|---|---|---|
PLA | 365.6 ± 2.1 a | 39.0 ± 1.4 bc | 90.6 ± 0.2 bc | 25.7 ± 0.2 c | 148.2 ± 0.8 bc | −30.3 ± 0.4 b | 3.2 ± 1.4 a |
0.5PLA(PV/CNC)n | 362.1 ± 0.3 a | 36.6 ± 0.4 ab | 87.9 ± 0.2 ab | 22.2 ± 0.1 a | 146.3 ± 0.3 a | −28.9 ± 1.1 b | 6.9 ± 0.8 a |
0.5PLACNC | 363.1 ± 1.8 a | 35.4 ± 0.4 a | 85.4 ± 0.5 a | 24.6 ± 1.1 abc | 146.1 ± 0.6 a | −28.9 ± 1.2 b | 4.7 ± 0.1 b |
1PLA(PV/CNC)n | 361.5 ± 1.1 a | 37.8 ± 1.9 bc | 86.9 ± 3.3 ab | 22.6 ± 0.4 ab | 146.5 ± 1.3 a | −29.0 ± 0.4 b | 6.8 ± 0.8 a |
1PLACNC | 365.2 ± 0.1 a | 38.4 ± 3.7 bc | 95.2 ± 1.6 d | 25.4 ± 2.6 bc | 148.6 ± 0.2 bc | −26.9 ± 0.7 c | 3.6 ± 0.7 b |
3PLA(PV/CNC)n | 358.5 ± 0.5 a | 40.3 ± 0.8 c | 90.8 ± 2.5 bc | 24.0 ± 1.1 abc | 147.8 ± 0.7 ab | −30.0 ± 0.1 b | 6.4 ± 1.2 a |
3PLACNC | 365.4 ± 0.5 a | 38.5 ± 0.8 bc | 92.5 ± 0.8 cd | 29.6 ± 0.4 d | 149.7 ± 0.4 c | −32.6 ± 0.2 a | 4.6 ± 1.1 b |
Lower case letters a–d indicate significant differences in a thermal parameter among the materials. a corresponds to the smaller values and b the higher ones.