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| Name | Properties | Supplier |
|---|---|---|
| Polylactic acid (PLA) | 2003D, Mw = 1.77 × 106, polydispersity coefficient n = 1.43 | NatureWorks, USA |
| Acetylated starch | Degree of acetyl substitution 1.0–1.5 | Shandong Zhucheng Xingmao Corn Development Co. Ltd |
| Glycerin | Analytically pure | Beijing Chemical Plant |
| Humus soil | — | Collected from outside at Qiqihar University |
