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Proposed rate enhancement mechanisms for PLLA chemical recycling using Sn(Oct)2 and alcohol (GEO) catalyst systems. (a) The triol undergoes transesterification with the PLLA, which increases the overall PLLA-OH end-group concentration and simultaneously reduces its molar mass and viscosity. (b) The alcohol hydroxyl groups may accelerate rates by increasing the nucleophilicity of the Sn-OR chain end.
