Back Cover: "Like Recycles Like": Selective Ring‐Closing Depolymerization of Poly(L‐Lactic Acid) to L‐Lactide (Angew. Chem. Int. Ed. 33/2022). Issue 33 (1st August 2022)

• Record Type: Journal Article
• Authors: Cederholm, Linnea; Wohlert, Jakob; Olsén, Peter; Hakkarainen, Minna; Odelius, Karin
• Is Part Of: Angewandte Chemie international edition. Volume 61:Issue 33(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-01
• Subjects: Chemical Recycling -- L-Lactide -- Ring-Opening Polymerization -- Solvent Effects -- Thermodynamics; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202208982
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract : Closed‐loop recycling of poly(L‐lactic acid) (PLLA) to L‐lactide (LLA) was enabled by specific solvent interactions. In their Research Article (e202204531 ), Karin Odelius and co‐workers show how the ceiling temperature ( T c ) depends not only on concentration, but also on solvent properties. This was utilized to lower the recycling temperature of PLLA, enabling direct ring‐closing depolymerization of high‐molecular‐weight PLLA to the cyclic monomer LLA with high yield and high selectivity.