Development of High-tenacity and Thermally Stable Plastics byPolymerization of Plant-derived Aromatic Hydroxy Acids

从阿魏酸和咖啡酸开发芳香聚酯，这两种酸都可以从米糠和提取咖啡豆等农业废弃物中获得。聚（咖啡酸）在约110 °C下显示玻璃化转变，但在低于320 °C下不热降解。当阿魏酸和乙醇酸的混合物自发地显示热致液晶相时，聚咖啡酸在高于玻璃化转变温度的剪切下形成液晶相。

Development of aromatic polyesters from ferulic and caffeic acids, both of which can be obtained from agricultural wastes such as rice bran and extracted coffee beans, was performed. Poly(caffeic acid) showed glass transition at about 110 °C but was not thermally degraded below 320 °C. While copolyester of ferulic acid and glycolic acid spontaneously showed thermotropic liquid crystalline phase, poly(caffeic acid) formed liquid crystalline phase under shear above the glass transition temperatures.