Synthesis and Characterization of Biodegradable Crosslinked Polymers from 5-Hydroxylevulinic Acid and α,ω-Diols
作者：Yan Zhang, Linbo Wu*, Bo-Geng Li
關(guān)鍵字：biodegradable, crosslinking, polycondensation,polyesters
論文來源：期刊
具體來源：J Appl Polym Sci 117: 3315–3321, 2010
發(fā)表時(shí)間：2010年
Novel biodegradable chemically cross-linked polymers, poly(5-hydroxylevulinic acid-co- , -diol)sax (PHLA-diols), were synthesized from 5-hydroxylevulinic acid and α,ω, -diols and characterized by Fourier transformax infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical analysis. The gel content, swelling ratio, tensile properties, and hydrolytic degradation behaviors were also measured and assessed. The glass-transition temperature of the PHLA-diols could be adjusted within a wide range (-50 to 30℃) by the type and feed ratio of the diol. Because of the low exhibited certain elastic properties. The tensile modulus, strength, and elongation at break measured at 37C were 1.4–6.3 MPa, 0.8–1.6 MPa, and 10–25%, respectively. These polymers could be hydrolytically degraded.