Polycaprolactone (PCL) is a biodegradable polyester with the chemical formula (C6H10O2)n. It is synthesized by the ring-opening polymerization of ε-caprolactone. PCL is a semicrystalline polymer with a low melting point (around 60 °C) and good flexibility. It is used in various applications, including biodegradable packaging, drug delivery systems, and tissue engineering scaffolds.

聚己内酯 (PCL) 是一种可生物降解的聚酯，化学式为 (C6H10O2)n。它通过 ε-己内酯的开环聚合合成。PCL 是一种半结晶聚合物，熔点低（约 60 °C），柔韧性好。它用于各种应用，包括可生物降解包装、药物输送系统和组织工程支架。