This research aims to produce lignin‐based biodegradable polyesters with improved thermal quality. A series of aliphatic polyesters with lignin‐based aromatic side groups were synthesized by conventional melt‐polycondensation. Decent molecular weight (21–64 kg mol⁻¹) was achieved for the polymerizations. The molecular structures and thermal and mechanical properties of the obtained polyesters were characterized. As a result, the obtained polyesters are all amorphous, and their glass‐transition temperature (T_g) depends on the size of the pendant aromatic group (31–51 °C). Furthermore, according to the TGA results, the thermal decomposition temperatures of the polyesters are all above 390 °C, which make them superior compared with commercial biodegradable polyesters like polylactic acid or polyhydroxyalkanoates. Finally, rheological characteristics and enzymatic degradation of the obtained polyesters were also measured. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 2314–2323

中文翻译：

---

具有木质素基芳香族侧基的脂肪族聚酯的合成，热，流变特性和酶促降解

这项研究旨在生产具有改善的热质量的木质素基可生物降解聚酯。通过常规的熔融缩聚反应合成了一系列具有木质素基芳香族侧基的脂肪族聚酯。聚合获得了适当的分子量（21–64 kg mol ^-1）。对所得聚酯的分子结构和热力学性能进行了表征。结果，得到的聚酯都是无定形的，它们的玻璃化转变温度（T _g）取决于芳族侧基的大小（31–51°C）。此外，根据TGA结果，聚酯的热分解温度均高于390℃，这使其比市售可生物降解的聚酯如聚乳酸或聚羟基链烷酸酯优越。最后，还测量了所得聚酯的流变特性和酶促降解。©2019 Wiley Periodicals，Inc.J.Polym。科学，A部分：Polym。化学 2019，57，2314–2323