Synthesis And Characterization Of L-alanine Based Poly(ester-amide)s
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Date
2016
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Volume Title
Publisher
Oum-El-Bouaghi University
Abstract
Novel biomaterials L-alanine based poly(ester-amide)s (PEAs) differing in the amide/ester ratio have been directly synthesized by direct melt copolycondensation of Adipic acid, L-alanine and various aliphatic and heterocyclic diols. PEAs were systematically characterized with intrinsic viscosity, FTIR, 1H-NMR, 13C-NMR, DSC and SEC measurements. The resulting copolymers are amorphous and present increasing glass transition temperatures at increasing L-Alanine contents. L-Alanine-PEAs proved to be materials having high molecular weights that could reach 41800 g/mol.
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Keywords
Adipic acid, L-alanine, melt polycondensation, microstructure, Poly(ester-amide), NMR