Table 2.
Research on chemical modification of polylactic acid-based foams from 2020 to 2022.
| Research System | PLA Brand | Expansion Ratio |
Cell Size | Cell Density | Reference |
|---|---|---|---|---|---|
| PLA/CE (Epoxy-based styrene-acrylic acid oligomers) | 2003D | ~10 | 40 nm | 1015 cells/cm3 | [54] |
| PLA/CE (a random copolymer of ethylene and glycidyl methacrylate) | 2003D | ~42(↑) | ~155 µm | ~1016 cells/cm3 | [90] |
| PLA/CE (Acrylic acid oligomer) | 2003D | 11 | ~10 µm | 1010 cell/cm3 | [91] |
| PLA/EPDM/CL (1,3,5-Triallyl-1,3,5-triazine-2,4,6 (1H,3H,5H)-trione) | 4032D | ~28 | 40 µm | 109 cell/cm3 | [81] |
| PLA/SiO2 aerogel/CE (MDI) | 4043D | ~55 | 120 µm | 0.024 g/cm3 | [60] |
In the table, “CE” refers to chain extender and “CL” refers to cross-linking agent.