Topology Characterization by MALDI-ToF-MS of Enzymatically Synthesized Poly(lactide-co-glycolide)
Biomacromolecules2006Vol. 7(9), pp. 2465–2469
Citations Over TimeTop 10% of 2006 papers
Abstract
Lipase catalyzed copolymerization of the monomers lactide and glycolide by Pseudomonas cepacia employing a molar ratio of 80L/20G has been studied. The copolymers were characterized by MALDI-ToF-MS, DSC, SEC and NMR. MALDI-ToF-MS has successfully been used not only to determine end groups and chemical composition but even the microstructure of the copolymers. We demonstrated that for this lipase catalyzed copolymerization, the main product of the reaction at 100 degrees C was linear homopolymer of lactide while at 130 degrees C the main product was cyclic random copolymer.
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