Families of bio-based hyperbranched epoxy (HBPEEs) were successfully prepared using renewable xylitol, bisphenol A and epichlorohydrin as feedstocks. The structure and physical performances of HBPEEs were characterized by FTIR, NMR, GPC and viscosity evaluation. Then, they were used as high efficient tougheners for diglycidyl of bisphenol A/diethylenetriamine (DGEBA/DETA) networks. The results indicated that the incorporation of HBPEEs into the DGEBA system can significantly enhance the mechanical properties and solvent resistance properties of the hybrid (HBPEEs/DGEBA). In particular, toughened hybrids with 15 wt% HBPEE-2 exhibited the outstanding impact strength than that of neat DGEBA (37.4 kJ/m² vs. 11.8 kJ/m²) due to its excellent compatibility of with DGEBA. Simultaneously, the ductile fracture morphology of the modified hybrids was also confirmed by SEM. In addition, the activation energies of HBPEE-2/DGEBA hybrids calculated from the non-isothermal curing kinetics were lower than that of neat DGEBA. All of the results suggested that the bio-based HBPEEs could be used as efficient tougheners applied in epoxy resins industry.

使用可再生木糖醇，双酚A和环氧氯丙烷作为原料成功制备了生物基超支化环氧（HBPEE）家族。通过FTIR，NMR，GPC和粘度评估对HBPEEs的结构和物理性能进行了表征。然后，它们被用作双酚A /二亚乙基三胺（DGEBA / DETA）网络的二缩水甘油基的高效增韧剂。结果表明，将HBPEEs掺入DGEBA系统中可以显着增强杂种（HBPEEs / DGEBA）的机械性能和耐溶剂性能。特别是，具有15 wt％HBPEE-2的增韧杂化材料表现出比纯DGEBA出色的冲击强度（37.4 kJ / m ²与11.8 kJ / m ²），因为它与DGEBA具有出色的兼容性。同时，还通过SEM证实了改性杂种的韧性断裂形态。此外，由非等温固化动力学计算得到的HBPEE-2 / DGEBA杂化物的活化能比纯DGEBA的活化能低。所有结果表明，生物基HBPEE可用作环氧树脂工业中的高效增韧剂。