Poly(ester-amide)s Derived From Adipic Acid, 1,4-Butanediol and β-Alanine: Synthesis and Characterization

Abstract

A series of polyesteramides (PEAs) differing in their amide/ester ratio, within a range of molar composition from 90/10 to 10/90, have been synthesized by a direct melt polycondensation of 1,4-butanediol, adipic acid and b-alanine. Their structure was fully characterized by FTIR and NMR spectroscopy. The resulting copolymers are amorphous, they are thermally stable to temperatures up to 330 C, and present increasing glass transition temperatures at increasing amide content.

Synthetic Polymers from Sugar-Based Monomers

“…This type of polymer combines the good mechanical and processing properties of polyamides and the biodegradability of polyesters. The hydrolytically cleavable ester bonds and the lowering of the crystallinity make them promising materials for biomedical applications. − However, though abundant papers have been published on the synthesis of biodegradable and biobased poly­(ester amide)­s, − those on carbohydrate-based poly­(ester amide)­s are scarce.…”