Two commercial L-rich polylactides (PLLA) from NatureWorks® (Minnetonka, MN, USA) are used in this investigation. Their grades are named PLA Polymer 3051D and Ingeo™ Biopolymer 6202D, with a density of 1.25 and 1.24 g/cm3, respectively.
The mesoporous SBA-15 silica was purchased from Sigma-Aldrich (St. Louis, MO, USA) (specific surface area, SBET = 517 m2/g; total pore volume, Vt = 0.83 cm3/g; average mesopore diameter, Dp = 6.25 nm [48 (link)]) and was used as received.
The mesoporous SBA-15 silica was purchased from Sigma-Aldrich (St. Louis, MO, USA) (specific surface area, SBET = 517 m2/g; total pore volume, Vt = 0.83 cm3/g; average mesopore diameter, Dp = 6.25 nm [48 (link)]) and was used as received.
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