PLA da acido L-lattico (ROP)

flowchart LR plaPrepolymerization["prepolimerizzazione acido lattico (rimozione H2O)"] lactideDepolymerization["purificazione lactide (distillazione vacuum)"] plaROP["ROP lactide → PLA polimero"] s_lacticAcid(["acido L-lattico"]):::role_rawMaterial s_lacticAcid --> plaPrepolymerization s_lactideCrude(["lactide grezzo (con impurità)"]):::role_intermediate plaPrepolymerization --> s_lactideCrude s_water(["acqua"]):::role_byproduct plaPrepolymerization -.-> s_water s_lactide(["L-lattide (dimero ciclico)"]):::role_byproduct plaPrepolymerization -.-> s_lactide s_lactideCrude --> lactideDepolymerization lactideDepolymerization --> s_lactide s_lactide --> plaROP s_tinOctoateCatalyst(["catalizzatore Sn(II) ottoato (ROP)"]):::role_catalyst s_tinOctoateCatalyst -.-> plaROP s_pla(["acido polilattico (PLA)"]):::role_finalProduct plaROP --> s_pla classDef role_rawMaterial fill:#e8f4ff,stroke:#06c,color:#003 classDef role_finalProduct fill:#e8ffe8,stroke:#0a7,color:#030 classDef role_intermediate fill:#f0f0f0,stroke:#666,color:#333 classDef role_byproduct fill:#fff4e0,stroke:#cc7a00,color:#642 classDef role_waste fill:#fae8e8,stroke:#888,stroke-dasharray:3 3,color:#444 classDef role_utility fill:#e0f7f7,stroke:#06c8c8,color:#033 classDef role_catalyst fill:#fde0f0,stroke:#cc3399,color:#506 classDef role_mine fill:#f5e6d3,stroke:#8b5a2b,color:#3d2e15,stroke-width:2px

PREFIX chem: <https://ontology.siletto.it/chem-pipeline#>
SELECT ?role ?substance WHERE {
  ?substance chem:playsRole ?ra .
  ?ra chem:role ?role ; chem:inPipeline chem:plaPipeline .
} ORDER BY ?role