Thermal properties. DSC analysis of poly(xylitol sebacate-co-butylene sebacate) PXBS

<p>In this work, a bio-based copolyester with good mechanical properties was synthesized and<br> characterized in terms of structure, main properties and biodegradability Determining the chemical<br> structure of such materials is important to understand their behavior and properties. Performing<br> an extraction of insoluble cross-linked polymer using di erent solvents allowed us to analyze how<br> the polymer behaves when subjected to di erent chemical environments, and to obtain soluble<br> samples suitable for more in-depth analysis. Chemical structure of poly (xylitol sebacate-co-butylene<br> sebacate) was determined by a 1H NMR and FTIR analysis of both prepolymer gel sample and<br> samples obtained by extraction of cross-linked polymer using di erent solvents. Block structure of<br> the copolymer was confirmed by both NMR and DSC. Gel fraction, swelling value, water contact<br> angle, and mechanical properties were also analyzed. Biodegradability of this material was confirmed<br> by performing enzymatic and hydrolytic degradation. Synthesizing sugar-alcohol based copolyester<br> using three monomers leads to obtaining a material with interesting chemical structure and desirable<br> mechanical properties comparable to conventional elastomers.</p>