Switchable Polymerization Catalysis Using a Tin(II) Catalyst and Commercial Monomers to Toughen Poly(<scp>l</scp>-lactide)

Sustainable plastics sourced without virgin petrochemicals, that are easily recyclable and with potential for degradation at end of life, urgently needed. Here, copolymersand blends meeting these criteria efficiently prepared using a single catalyst existing commercial monomers l-lactide, propylene oxide, maleic anhydride. The selective, one-reactor polymerization applies an industry-relevant tin(II) catalyst. Tapered, miscible block polyesters formed alkene groups which postfunctionalized to modulate the polymer glass transition temperature. polymers blended desirable low weight fractions (2 wt %) poly(l-lactide) (PLLA), increasing toughness, elongation break compromising elastic modulus, tensile strength, or thermal properties. selective catalysis, catalyst, provides straightforward means improve bioplastics performances.