Hydrolytic Degradation of Biobased Poly(butylene succinate-co-furandicarboxylate) and Poly(butylene adipate-co-furandicarboxylate) Copolyesters under Mild Conditions
作者：?Shuangbao Peng, BinShuang Wu, Linbo Wu*, Bo-Geng Li, Philippe Dubois*
關(guān)鍵字：biodegradable; biopolymers and renewable polymers; degradation; polyesters
論文來源：期刊
具體來源：J. Appl. Polym. Sci. 2017, 134(15): 44674 DOI: 10.1002/app.44674
發(fā)表時(shí)間：2017年
It is indispensable to investigate hydrolytic degradation behavior to develop novel biodegradable polyesters. Biobased and biodegradable copolyesters poly(butylene adipate-co-butylene furandicarboxylate) (PBAF) and poly(butylene succinate-co-butylene furandicarboxylate) (PBSF) with BF molar fraction (/BF) between 40 and 60% were synthesized in this study. The hydrolytic degradation of film samples was conducted in a pH 7.0 PBS buffer solution at 25 8C. Slight mass loss (1–2%) but significant decrease in intrinsic viscosity (35–44%) was observed after 22 weeks. The apparent hydrolytic degradation rate decreased with increasing /BF and initial crystallinity. Meanwhile, PBAFs degraded slightly faster than PBSFs with the same composition. The /BF and crystallinity increased slowly with degradation time, suggesting the aliphatic moiety and the amorphous region are more susceptible to hydrolysis. And high enough tensile properties were retained after hydrolysis degradation, indicating PBAF and PBSF copolyesters are hydrolytically degradable, with tunable hydrolytic degradation rate and good balance between hydrolytic degradability and durability