Probing structure-heterogeneous nucleation efficiency relationship of mesoporous particles in polylactic acid microcellular foaming by supercritical carbon dioxide

- SBA-15 particles with three modifications were used to improve the cell morphology.
- A two-step saturation batch foaming process is proposed to fabricate PLA foams.
- The optimal condition for the PLA foams was explored.
- The most critical factor for heterogeneous nucleation was discussed.