Table 3. Biodegradation rate and Ed K of BDPs.
| Materials | ThCO2 (mg)a | EvCO2 (mg)b | Biodegradation rate (%)c | EdK d |
| starch | 569.8 | 446.40±9.92 | 78.34±1.74 | 100.00±0.00 |
| pullulan | 569.8 | 420.37±7.70 | 73.77±1.35 | 94.22±3.74 |
| curdlan | 569.8 | 368.12±10.19 | 64.60±1.79 | 82.50±3.13 |
| PHBHHx | 569.8 | 354.20±5.04 | 62.16±0.88 | 79.36±1.28 |
| PHBV | 569.8 | 304.70±3.81 | 53.47±0.67 | 68.29±2.28 |
| PEA | 569.8 | 206.80±10.49 | 36.29±1.84 | 46.34±2.58 |
| PCL | 569.8 | 146.30±3.97 | 25.68±0.7 | 32.77±0.21 |
| cellulose | 569.8 | 142.45±3.43 | 25.00±0.6 | 31.93±1.36 |
| chitosan | 569.8 | 84.70±2.40 | 14.86±0.42 | 18.98±0.71 |
| PEG | 569.8 | 68.20±2.20 | 11.97±0.39 | 15.28±0.42 |
| PVA | 569.8 | 28.60±2.52 | 5.02±0.44 | 6.41±0.53 |
| PEO | 569.8 | 21.45±1.46 | 3.76±0.26 | 4.81±0.43 |
| PPC | 569.8 | 19.25±1.46 | 3.38±0.26 | 4.31±0.27 |
| PBSA | 569.8 | 16.50±1.46 | 2.90±0.26 | 3.70±0.32 |
| PBS | 569.8 | 11.00±0.55 | 1.93±0.10 | 2.47±0.16 |
| PLA | 569.8 | 5.50±1.46 | 0.97±0.26 | 1.23±0.32 |
| PE | 569.8 | 0.00±0.00 | 0.00±0.00 | 0.00±0.00 |
a: ThCO2: the theoretically released CO2 of each material; b: EvCO2: The average with standard deviation of three independent titration results for the actually released CO2 of material to be determined in the degradation process; c: Biodegradation rate: the value of biodegradation rate calculated via formula 2; d: Ed K: the degradable parameter calculated via formula 7.