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Data showing CRM of waste PLLA coffee cup lids and demonstrating catalyst system recycling over four “batches” of PLLA. (a) Chemical recycling of PLLA coffee cup lids to l-LA. (b) Plot of l-LA yields over four different CRM using Goodfellows PLLA and the same Sn(Oct)2/GEO catalyst ([Sn(Oct)2]0:[OHGEO]0:[PLLA]0 = 0.25:20:1000, 160 °C). Cycle 1 yield = 92%, cycle 2 yield = 94%, cycle 3 yield = 97%, and cycle 4 yield = 95%. Purity of l-LA > 99% across all cycles.
