Bimetallic aluminum complexes supported by bis(salicylaldimine) ligand: Synthesis, characterization and ring-opening polymerization of lactide

Bismuth subsalicylate, a low-toxicity catalyst for the ring-opening polymerization (ROP) ofl-lactide (l-LA) with aliphatic diol initiators: synthesis, characterization, and mechanism of initiation

“…Aliphatic polyesters are some of the most versatile biodegradable polymers due to their moderate mechanical properties and good biodegradability and biocompatibility. [1][2][3][4][5][6] Polylactide (PLA) and its derivatives, are frequently encountered aliphatic polyesters, having mechanical properties similar to those of polystyrene, and are characterized by a high modulus and low elongation to break. 7 PLA is a relatively brittle plastic but possesses good strength, and as such nds utility in biomedicine, including as a controlled drug delivery carrier, tissue engineering scaffold, surgical suture, and bone xation material.…”

Facile Preparation of Stereoblock PLA From Ring-Opening Polymerization of rac-Lactide by a Synergetic Binary Catalytic System Containing Ureas and Alkoxides

“…In the past decades, many new catalysts or initiators, such as enzymatic (Duskunkorur et al, 2015 ), metal-based (O'Keefe et al, 2001 ; Jensen et al, 2004 ; Arbaoui et al, 2008 ; Arbaoui and Redshaw, 2010 ; Carpentier, 2010 ; Sauer et al, 2013 ; Mou et al, 2014 ; Walton et al, 2014 ; Liu et al, 2017 ; Luo et al, 2017 ; Wang et al, 2017 ; Xu et al, 2017 ; Shi et al, 2018a , b ) and organic catalysts (Kamber et al, 2007 ; Song et al, 2017 ), have been reported for conventional ROP of LA (Dechy-Cabaret et al, 2004 ). However, there are few able to prepare stereoregular PLA from a feedstock of rac -LA.…”

Synthesis of Biodegradable Polymers: A Review on the Use of Schiff-Base Metal Complexes as Catalysts for the Ring Opening Polymerization (ROP) of Cyclic Esters

“…Notably, 239 proved efficient even at higher monomer concentrations (up to 350 equiv./Al), allowing for 87% conversion after 3 h at ambient temperature; furthermore, in this case, the polymerization proceeded in a living fashion. Recently, dinuclear aluminum complexes supported by bis-iminophenolate ligands have been independently reported by the groups of Wang [118] and Liu [119]. Such systems were highly active in the ROP of rac-lactide, affording high molecular weight polymers with narrow polydispersities.…”

“…Catalysts 2020, 10, 800 30 of 49 Recently, dinuclear aluminum complexes supported by bis-iminophenolate ligands have been independently reported by the groups of Wang [118] and Liu [119]. Such systems were highly active in the ROP of rac-lactide, affording high molecular weight polymers with narrow polydispersities.…”