Several lipases were embedded into the aliphatic biodegradable polyesters poly(butylene succinate), poly(butylene succinate-co-adipate) and polycaprolactone, all of which normally exhibit limited environmental degradation. Observed composite films were all enzymatic self-degraded in buffered solutions. Four different lipases (Lipase AK Amano, Lipase G Amano 50 and Lipase PS Amano SD and Lipozyme CALB L) that have sufficient thermal stability and high degradation activity for each polyester, were selected out and embedded in films of these polymers produced using melt extrusion. Even low concentrations of these lipases embedded in the polyester films resulted in significant degradation after a short time period, suggesting that the lipases retained their activities after melt extrusion. The mechanical properties of the films containing these lipases were essentially unchanged except for decreased elongation at break values. This study demonstrates the viability of using embedded enzymes to obtain self-degradable polymers as an approach that can provide the existing polymers a degradation initiation function to solving environmental issues related to plastic waste.

几种脂肪酶被嵌入脂肪族可生物降解聚酯聚（丁二酸丁二醇酯）、聚（丁二酸丁二醇酯-co-己二酸）和聚己内酯，所有这些通常都表现出有限的环境退化。观察到的复合膜在缓冲溶液中都是酶促自降解的。四种不同的脂肪酶（Lipase AK Amano、Lipase G Amano 50 和 Lipase PS Amano SD 和 Lipozyme CALB L）对每种聚酯都具有足够的热稳定性和高降解活性，被挑选出来并嵌入这些聚合物的薄膜中，这些聚合物使用熔体挤出生产。即使嵌入聚酯薄膜中的这些脂肪酶浓度很低，也会在短时间内导致显着降解，这表明脂肪酶在熔融挤出后仍保持其活性。除了断裂伸长率降低外，含有这些脂肪酶的薄膜的机械性能基本没有变化。