Ring opening polymerization (ROP) of ε-caprolactone (CL) was carried out by bulk polymerization technique using stannous octoate (SO) as a catalyst and in the presence of macro or molecular initiator for 5 h under inert atmosphere with mild stirring. The % yield of poly(ε-caprolactone) (PCL) obtained was calculated and compared based on the chemical structure of macro and molecular initiators. Various analytical techniques such as FT-IR, ¹H-NMR, XPS, GPC, DSC, TGA, SEM and WCA were used to characterize the PCL. The FT-IR spectrum showed the C=O stretching around ∼1725 cm⁻¹. The aromatic proton signal of isoeugenol (IE) initiator appeared at 7–8 ppm in the proton NMR spectrum. The experimental results obtained were compared with the literature values.

ε-己内酯（CL）的开环聚合（ROP）是通过本体聚合技术进行的，使用辛酸亚锡（SO）作为催化剂，在大分子或分子引发剂的存在下，在惰性气氛下温和搅拌5小时。基于宏观和分子引发剂的化学结构计算和比较获得的聚（ε-己内酯）（PCL）的％产率。使用各种分析技术，如 FT-IR、¹ H-NMR、XPS、GPC、DSC、TGA、SEM 和 WCA 来表征 PCL。FT-IR 光谱显示 C=O 拉伸约 1725 cm ^-1。异丁香酚 (IE) 引发剂的芳香质子信号出现在质子核磁共振谱中的 7-8 ppm。获得的实验结果与文献值进行了比较。