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The star-shaped poly(l-lactide) (s-PLLA) was synthesized via ring-opening polymerization of l-lactide, with xylitol as a multifunctional initiator and stannous octoate as a catalyst. The structures of s-PLLA were characterized by 1H NMR spectroscopy, while the molecular weight (Mw) and polydispersity index were determined by gel permeation chromatography. Bovine serum albumin (BSA) loaded s-PLLA microspheres...
In this paper, a series of star-shaped poly(l-lactide)s (s-PLLA) were synthesized via ring-opening polymerization of l-lactide (LLA) using erythritol as initiator. The structure and properties of s-PLLA were characterized by 1H NMR, GPC and DSC. Then taking rifampicin (RIF) as the model drug, RIF-loaded s-PLLA microspheres were prepared using an oil-in-water emulsion solvent evaporation method. SEM...
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