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The solubility of CO2 in polylactide acid (PLA) and the pressure–volume–temperature (PVT) behavior of PLA were investigated using a magnetic suspension balance (MSB) and an in-house visualization device. Experiments were carried out at temperatures ranging from (453 to 473)K, and the pressure was varied from (6.89 to 20.68)MPa. The results indicated that as the temperature increased, the swelling...