Table 2.

Technologies that employ d-CO₂ and sc-CO₂ for PLA processing to obtain advanced functional products.

Technique	Product	Products’ Main Properties
Drying	Aerogels Scaffolds	Low density High porosity High specific surface area
Foaming	Foams	Highly porous structure
Particle generation	Microparticles Nanoparticles	Tunable size Controlled particle size distribution
Impregnation	Variety of forms	Material with organic or inorganic compounds Active material (bio or photocatalytic activity)