Eight-armed polydiacetylene under benzoxazine dimer branched polylactide: a structural combination for reversible thermochromic effects and a model case for free-standing poly(lactic acid) films

The present work declares for the first time, the favorable conditions that bring a reversible thermochromic free-standing PLA film.</p

Benzoxazine derived ligands for Chain Shuttling Polymerization catalysts: Straightforward access to polylactide multiblock copolymers

International audienc

Lactide Lactone Chain Shuttling Copolymerization Mediated by an Aminobisphenolate Supported Aluminum Complex and Al(OiPr)3: Access to New Polylactide Based Block Copolymers

International audienceThe chain shuttling ring-opening copolymerization of L-lactide with epsilon-caprolactone has been achieved using two aluminum catalysts presenting different selectivities and benzyl alcohol as chain transfer agent. A newly synthesized aminobispheno-late supported aluminum complex affords the synthesis of lactone rich poly(L-lactide-co-lactone) statistical copolymeric blocks, while Al(OiPr)3 produces semi-crystalline poly(L-lactide) rich blocks. Transalkoxylation is shown to operate efficient-ly. The crystalline ratio and glass transition temperatures of these new class of polylactide based block copolymers can be tuned by adjusting the catalysts and the comonomers ratio

Unprecedented Lactide-Lactone Chain Shuttling Copolymerization Mediated by Aluminum Complexes

National audienc

Lactide Lactone Chain Shuttling Copolymerization Mediated by an Aminobisphenolate Supported Aluminum Complex and Al(O<i>i</i>Pr)₃: Access to New Polylactide Based Block Copolymers

The chain shuttling ring-opening copolymerization of l-lactide with ε-caprolactone has been achieved using two aluminum catalysts presenting different selectivities and benzyl alcohol as chain transfer agent. A newly synthesized aminobisphenolate supported aluminum complex affords the synthesis of lactone rich poly­(l-lactide-co-lactone) statistical copolymeric blocks, while Al­(OiPr)3 produces semicrystalline poly­(l-lactide) rich blocks. Transalkoxylation is shown to operate efficiently. The crystalline ratios and glass transition temperatures of these new classes of polylactide based block copolymers can be tuned by adjusting the catalysts and the comonomers ratio