The ring opening polymerization reactions of ε-caprolactone and L-lactide in the presence of the initiator dipentaerythritol, generated the hydroxy-terminated 6-armed star-shaped ε-caprolactone and L-lactide oligomers (H6CLO and H6LAO), respectively. The disulfide-containing polyester-urethane networks (PN-LCxy-DSz, weight ratios of H6LAO/H6CLO: x/y = 1/0, 3/1, 1/1, 1/3, and 0/1, BHEDS/(H6LAO + H6CLO) molar ratios: z = 0, 1, and 3) were produced by reacting H6LAO, H6CLO and bis(2-hydroxyethyl)disulfide (BHEDS) with hexamethylene diisocyanate (HDI). Fourier-transform infrared (FT-IR) spectroscopy and gel fraction analyses were conducted, which revealed that the urethanization reaction proceeded smoothly to generate the polymer networks. The differential scanning calorimetry (DSC) experiments with the PN-LCxy-DSz networks revealed that the oligocaprolactone (CLO) segments were crystallized, while the oligolactide (LAO) segments were not. The dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM) techniques were used to reveal the high compatibility of the LAO and CLO segments in the PN-LC31-DS1 network. The compatibility of the co-networks decreased with increasing CLO fraction. The cut lines in the PN-LCxy-DS1 (xy = 10, 31, 11, and 31) films self-healed at room temperature within 24 h. The PN-LC31-DS1 film exhibited the highest healing efficiency on the tensile strength (98.5%). In contrast, the cut lines in the PN-LC10-DS0 and PN-LC01-DS0 films, devoid of disulfide bonds, did not exhibit the self-healing property.

ε-己内酯和L-丙交酯在引发剂二季戊四醇存在下的开环聚合反应分别生成了羟基封端的6臂星形ε-己内酯和L-丙交酯低聚物（H6CLO和H6LAO）。含二硫化物的聚酯-氨基甲酸酯网络（PN-LC xy -DS z，H6LAO / H6CLO的重量比：x / y  = 1 / 0、3 / 1、1 / 1、1 / 3和0/1，BHEDS /（H6LAO + H6CLO）摩尔比：z 通过使H6LAO，H6CLO和双（2-羟乙基）二硫化物（BHEDS）与六亚甲基二异氰酸酯（HDI）反应生成= 0、1和3）。进行了傅里叶变换红外光谱（FT-IR）和凝胶分数分析，结果表明，氨基甲酸酯化反应进展顺利，生成了聚合物网络。PN-LC xy -DS z的差示扫描量热（DSC）实验网络显示寡己内酯（CLO）片段结晶，而寡聚内酯（LAO）片段未结晶。动态力学分析（DMA）和扫描电子显微镜（SEM）技术用于揭示PN-LC31-DS1网络中LAO和CLO段的高度相容性。共网络的兼容性随着CLO分数的增加而降低。PN-LC xy -DS1（xy  = 10、31、11和31）薄膜中的切割线在室温下在24小时内自愈。PN-LC31-DS1膜在拉伸强度上表现出最高的修复效率（98.5％）。相反，没有二硫键的PN-LC10-DS0和PN-LC01-DS0膜中的切割线没有表现出自修复性能。